Release Cosmopolitan v3.3.7

This was originally added when we were using the mcount hooking
technique, to prevent the nop from floating above the frame pointer
creation. Now we use a better codegen technique for hooking so it's no
longer needed to sacrifice performance by using this flag.

ape/BUILD.mk

@@ -254,7 +254,24 @@ o/$(MODE)/ape:	$(APE_CHECKS)			\
 endif
 
 # these assembly files are safe to build on aarch64
-o/$(MODE)/ape/ape.o: ape/ape.S
+o/$(MODE)/ape/ape.o:				\
+		ape/ape.S			\
+		ape/ape.h			\
+		libc/dce.h			\
+		libc/elf/def.h			\
+		ape/relocations.h		\
+		libc/thread/tls.h		\
+		ape/ape.internal.h		\
+		ape/macros.internal.h		\
+		libc/macho.internal.h		\
+		libc/macros.internal.h		\
+		libc/sysv/consts/prot.h		\
+		libc/nt/pedef.internal.h	\
+		libc/runtime/pc.internal.h	\
+		libc/runtime/e820.internal.h	\
+		libc/runtime/mman.internal.h	\
+		libc/nexgen32e/uart.internal.h	\
+		libc/calls/metalfile.internal.h
 	@$(COMPILE) -AOBJECTIFY.S $(OBJECTIFY.S) $(OUTPUT_OPTION) -c $<
 
 o/$(MODE)/ape/ape.lds:				\

build/definitions.mk

@@ -63,10 +63,6 @@ BACKTRACES =								\
 	-fno-optimize-sibling-calls					\
 	-mno-omit-leaf-frame-pointer
 
-ifneq ($(ARCH), aarch64)
-BACKTRACES += -fno-schedule-insns2
-endif
-
 SANITIZER =								\
 	-fsanitize=address
 

examples/asantest.c

@@ -0,0 +1,16 @@
+#include <stdlib.h>
+
+__static_yoink("__die");
+__static_yoink("GetSymbolByAddr");
+__static_yoink("malloc_inspect_all");
+
+char *lol(int n) {
+  return malloc(n);
+}
+
+char *(*pLol)(int) = lol;
+
+int main(int argc, char *argv[]) {
+  char *s = pLol(4);
+  s[4] = 1;
+}

libc/calls/mkntcmdline.c

@@ -23,6 +23,7 @@
 #include "libc/mem/mem.h"
 #include "libc/nt/files.h"
 #include "libc/proc/ntspawn.h"
+#include "libc/stdio/sysparam.h"
 #include "libc/str/str.h"
 #include "libc/str/thompike.h"
 #include "libc/str/utf16.h"
@@ -31,16 +32,14 @@
 
 #define APPEND(c)     \
   do {                \
-    if (k == 32766) { \
-      return e2big(); \
-    }                 \
-    cmdline[k++] = c; \
+    if (k < size)     \
+      cmdline[k] = c; \
+    ++k;              \
   } while (0)
 
-static bool NeedsQuotes(const char *s) {
-  if (!*s) {
+static textwindows bool NeedsQuotes(const char *s) {
+  if (!*s)
     return true;
-  }
   do {
     switch (*s) {
       case '"':
@@ -60,7 +59,7 @@ static inline int IsAlpha(int c) {
   return ('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z');
 }
 
-static bool LooksLikeCosmoDrivePath(const char *s) {
+static textwindows bool LooksLikeCosmoDrivePath(const char *s) {
   return s[0] == '/' &&    //
          IsAlpha(s[1]) &&  //
          s[2] == '/';
@@ -74,12 +73,13 @@ static bool LooksLikeCosmoDrivePath(const char *s) {
 //
 // @param cmdline is output buffer
 // @param argv is an a NULL-terminated array of UTF-8 strings
-// @return 0 on success, or -1 w/ errno
-// @raise E2BIG if everything is too huge
+// @param size is number of characters in cmdline buffer
+// @return length on success, which is >=size on truncation
 // @see "Everyone quotes command line arguments the wrong way" MSDN
 // @see libc/runtime/getdosargv.c
 // @asyncsignalsafe
-textwindows int mkntcmdline(char16_t cmdline[32767], char *const argv[]) {
+textwindows size_t mkntcmdline(char16_t *cmdline, char *const argv[],
+                               size_t size) {
   char *arg;
   int slashes, n;
   bool needsquote;
@@ -95,9 +95,8 @@ textwindows int mkntcmdline(char16_t cmdline[32767], char *const argv[]) {
     } else {
       arg = argv[i];
     }
-    if ((needsquote = NeedsQuotes(arg))) {
+    if ((needsquote = NeedsQuotes(arg)))
       APPEND(u'"');
-    }
     for (slashes = j = 0;;) {
       wint_t x = arg[j++] & 255;
       if (x >= 0300) {
@@ -122,9 +121,8 @@ textwindows int mkntcmdline(char16_t cmdline[32767], char *const argv[]) {
         APPEND(u'"');
         APPEND(u'"');
       } else {
-        for (s = 0; s < slashes; ++s) {
+        for (s = 0; s < slashes; ++s)
           APPEND(u'\\');
-        }
         slashes = 0;
         uint32_t w = EncodeUtf16(x);
         do
@@ -132,13 +130,12 @@ textwindows int mkntcmdline(char16_t cmdline[32767], char *const argv[]) {
         while ((w >>= 16));
       }
     }
-    for (s = 0; s < (slashes << needsquote); ++s) {
+    for (s = 0; s < (slashes << needsquote); ++s)
       APPEND(u'\\');
-    }
-    if (needsquote) {
+    if (needsquote)
       APPEND(u'"');
-    }
   }
-  cmdline[k] = 0;
-  return 0;
+  if (size)
+    cmdline[MIN(k, size - 1)] = 0;
+  return k;
 }

libc/calls/ntspawn.c

@@ -20,9 +20,15 @@
 #include "libc/calls/struct/sigset.internal.h"
 #include "libc/calls/syscall_support-nt.internal.h"
 #include "libc/intrin/strace.internal.h"
+#include "libc/nt/createfile.h"
+#include "libc/nt/enum/accessmask.h"
+#include "libc/nt/enum/creationdisposition.h"
+#include "libc/nt/enum/fileflagandattributes.h"
+#include "libc/nt/enum/filesharemode.h"
 #include "libc/nt/enum/processaccess.h"
 #include "libc/nt/enum/processcreationflags.h"
 #include "libc/nt/errors.h"
+#include "libc/nt/events.h"
 #include "libc/nt/files.h"
 #include "libc/nt/memory.h"
 #include "libc/nt/process.h"
@@ -33,6 +39,7 @@
 #include "libc/nt/struct/startupinfo.h"
 #include "libc/nt/struct/startupinfoex.h"
 #include "libc/proc/ntspawn.h"
+#include "libc/stdalign.internal.h"
 #include "libc/str/str.h"
 #include "libc/sysv/errfuns.h"
 #ifdef __x86_64__
@@ -44,14 +51,167 @@ struct SpawnBlock {
   char envbuf[32767];
 };
 
-static void *ntspawn_malloc(size_t size) {
+static textwindows void *ntspawn_malloc(size_t size) {
   return HeapAlloc(GetProcessHeap(), 0, size);
 }
 
-static void ntspawn_free(void *ptr) {
+static textwindows void ntspawn_free(void *ptr) {
   HeapFree(GetProcessHeap(), 0, ptr);
 }
 
+static textwindows ssize_t ntspawn_read(intptr_t fh, char *buf, size_t len) {
+  bool ok;
+  uint32_t got;
+  struct NtOverlapped overlap = {.hEvent = CreateEvent(0, 0, 0, 0)};
+  ok = (ReadFile(fh, buf, len, 0, &overlap) ||
+        GetLastError() == kNtErrorIoPending) &&
+       GetOverlappedResult(fh, &overlap, &got, true);
+  CloseHandle(overlap.hEvent);
+  return ok ? got : -1;
+}
+
+static textwindows int ntspawn2(struct NtSpawnArgs *a, struct SpawnBlock *sb) {
+
+  // make executable path
+  if (__mkntpathath(a->dirhand, a->prog, 0, sb->path) == -1)
+    return -1;
+
+  // open executable
+  char *p = sb->envbuf;
+  char *pe = p + sizeof(sb->envbuf);
+  intptr_t fh = CreateFile(
+      sb->path, kNtFileGenericRead,
+      kNtFileShareRead | kNtFileShareWrite | kNtFileShareDelete, 0,
+      kNtOpenExisting, kNtFileAttributeNormal | kNtFileFlagBackupSemantics, 0);
+  if (fh == -1)
+    return -1;
+  ssize_t got = ntspawn_read(fh, p, pe - p);
+  CloseHandle(fh);
+  if (got < 3)
+    return enoexec();
+  pe = p + got;
+
+  // handle shebang
+  size_t i = 0;  // represents space of sb->cmdline consumed
+  if (p[0] == 'M' && p[1] == 'Z') {
+    // it's a windows executable
+  } else if (p[0] == '#' && p[1] == '!') {
+    p += 2;
+    // make sure we got a complete first line
+    pe = memchr(p, '\n', pe - p);
+    if (!pe)
+      return enoexec();
+    *pe = 0;
+    int argc = 0;
+    char *argv[4];
+    // it's legal to say "#! /bin/sh"
+    while (p < pe && (*p == ' ' || *p == '\t'))
+      ++p;
+    if (p == pe)
+      return enoexec();
+    argv[argc++] = p;
+    // find the optional argument
+    while (p < pe && !(*p == ' ' || *p == '\t'))
+      ++p;
+    if (p < pe) {
+      *p++ = 0;
+      while (p < pe && (*p == ' ' || *p == '\t'))
+        ++p;
+      if (p < pe) {
+        argv[argc++] = p;
+      }
+    }
+    // now add the prog
+    argv[argc++] = (char *)a->prog;
+    argv[argc] = 0;
+    // ignore argv[0]
+    if (*a->argv)
+      ++a->argv;
+    // prepend arguments
+    if ((i += mkntcmdline(sb->cmdline + i, argv, 32767 - i)) >= 32767 - 1)
+      return e2big();
+    sb->cmdline[i++] = ' ';
+    sb->cmdline[i] = 0;
+    // setup the true executable path
+    if (__mkntpathath(a->dirhand, argv[0], 0, sb->path) == -1)
+      return -1;
+  } else {
+    // it's something else
+    return enoexec();
+  }
+
+  // setup arguments and environment
+  if ((i += mkntcmdline(sb->cmdline + i, a->argv, 32767 - i)) >= 32767)
+    return e2big();
+  if (mkntenvblock(sb->envblock, a->envp, a->extravars, sb->envbuf) == -1)
+    return -1;
+
+  // create attribute list
+  // this code won't call malloc in practice
+  bool32 ok;
+  void *freeme = 0;
+  alignas(16) char memory[128];
+  size_t size = sizeof(memory);
+  struct NtProcThreadAttributeList *alist = (void *)memory;
+  uint32_t items = !!a->opt_hParentProcess + !!a->opt_lpExplicitHandleList;
+  ok = InitializeProcThreadAttributeList(alist, items, 0, &size);
+  if (!ok && GetLastError() == kNtErrorInsufficientBuffer) {
+    ok = !!(alist = freeme = ntspawn_malloc(size));
+    if (ok) {
+      ok = InitializeProcThreadAttributeList(alist, items, 0, &size);
+    }
+  }
+  if (ok && a->opt_hParentProcess) {
+    ok = UpdateProcThreadAttribute(
+        alist, 0, kNtProcThreadAttributeParentProcess, &a->opt_hParentProcess,
+        sizeof(a->opt_hParentProcess), 0, 0);
+  }
+  if (ok && a->opt_lpExplicitHandleList) {
+    ok = UpdateProcThreadAttribute(
+        alist, 0, kNtProcThreadAttributeHandleList, a->opt_lpExplicitHandleList,
+        a->dwExplicitHandleCount * sizeof(*a->opt_lpExplicitHandleList), 0, 0);
+  }
+
+  // create the process
+  int rc;
+  if (ok) {
+    struct NtStartupInfoEx info = {
+        .StartupInfo = *a->lpStartupInfo,
+        .StartupInfo.cb = sizeof(info),
+        .lpAttributeList = alist,
+    };
+    if (ok) {
+      if (CreateProcess(sb->path, sb->cmdline, 0, 0, true,
+                        a->dwCreationFlags | kNtCreateUnicodeEnvironment |
+                            kNtExtendedStartupinfoPresent |
+                            kNtInheritParentAffinity |
+                            GetPriorityClass(GetCurrentProcess()),
+                        sb->envblock, a->opt_lpCurrentDirectory,
+                        &info.StartupInfo, a->opt_out_lpProcessInformation)) {
+        rc = 0;
+      } else {
+        rc = -1;
+        STRACE("CreateProcess() failed w/ %d", GetLastError());
+        if (GetLastError() == kNtErrorSharingViolation) {
+          etxtbsy();
+        } else if (GetLastError() == kNtErrorInvalidName) {
+          enoent();
+        }
+      }
+      rc = __fix_enotdir(rc, sb->path);
+    }
+  } else {
+    rc = __winerr();
+  }
+
+  // clean up resources
+  if (alist)
+    DeleteProcThreadAttributeList(alist);
+  if (freeme)
+    ntspawn_free(freeme);
+  return rc;
+}
+
 /**
  * Spawns process on Windows NT.
  *
@@ -72,93 +232,15 @@ static void ntspawn_free(void *ptr) {
  * @see spawnve() which abstracts this function
  * @asyncsignalsafe
  */
-textwindows int ntspawn(
-    int64_t dirhand, const char *prog, char *const argv[], char *const envp[],
-    char *const extravars[], uint32_t dwCreationFlags,
-    const char16_t *opt_lpCurrentDirectory, int64_t opt_hParentProcess,
-    int64_t *opt_lpExplicitHandleList, uint32_t dwExplicitHandleCount,
-    const struct NtStartupInfo *lpStartupInfo,
-    struct NtProcessInformation *opt_out_lpProcessInformation) {
-  int rc = -1;
+textwindows int ntspawn(struct NtSpawnArgs *args) {
+  int rc;
   struct SpawnBlock *sb;
   BLOCK_SIGNALS;
-  if ((sb = ntspawn_malloc(sizeof(*sb))) &&
-      __mkntpathath(dirhand, prog, 0, sb->path) != -1) {
-    if (!mkntcmdline(sb->cmdline, argv) &&
-        !mkntenvblock(sb->envblock, envp, extravars, sb->envbuf)) {
-      bool32 ok;
-      int64_t dp = GetCurrentProcess();
-
-      // create attribute list
-      // this code won't call malloc in practice
-      void *freeme = 0;
-      _Alignas(16) char memory[128];
-      size_t size = sizeof(memory);
-      struct NtProcThreadAttributeList *alist = (void *)memory;
-      uint32_t items = !!opt_hParentProcess + !!opt_lpExplicitHandleList;
-      ok = InitializeProcThreadAttributeList(alist, items, 0, &size);
-      if (!ok && GetLastError() == kNtErrorInsufficientBuffer) {
-        ok = !!(alist = freeme = ntspawn_malloc(size));
-        if (ok) {
-          ok = InitializeProcThreadAttributeList(alist, items, 0, &size);
-        }
-      }
-      if (ok && opt_hParentProcess) {
-        ok = UpdateProcThreadAttribute(
-            alist, 0, kNtProcThreadAttributeParentProcess, &opt_hParentProcess,
-            sizeof(opt_hParentProcess), 0, 0);
-      }
-      if (ok && opt_lpExplicitHandleList) {
-        ok = UpdateProcThreadAttribute(
-            alist, 0, kNtProcThreadAttributeHandleList,
-            opt_lpExplicitHandleList,
-            dwExplicitHandleCount * sizeof(*opt_lpExplicitHandleList), 0, 0);
-      }
-
-      // create the process
-      if (ok) {
-        struct NtStartupInfoEx info;
-        bzero(&info, sizeof(info));
-        info.StartupInfo = *lpStartupInfo;
-        info.StartupInfo.cb = sizeof(info);
-        info.lpAttributeList = alist;
-        if (ok) {
-          if (CreateProcess(sb->path, sb->cmdline, 0, 0, true,
-                            dwCreationFlags | kNtCreateUnicodeEnvironment |
-                                kNtExtendedStartupinfoPresent |
-                                kNtInheritParentAffinity |
-                                GetPriorityClass(GetCurrentProcess()),
-                            sb->envblock, opt_lpCurrentDirectory,
-                            &info.StartupInfo, opt_out_lpProcessInformation)) {
-            rc = 0;
-          } else {
-            STRACE("CreateProcess() failed w/ %d", GetLastError());
-            if (GetLastError() == kNtErrorSharingViolation) {
-              etxtbsy();
-            } else if (GetLastError() == kNtErrorInvalidName) {
-              enoent();
-            }
-          }
-          rc = __fix_enotdir(rc, sb->path);
-        }
-      } else {
-        rc = __winerr();
-      }
-
-      // clean up resources
-      if (alist) {
-        DeleteProcThreadAttributeList(alist);
-      }
-      if (freeme) {
-        ntspawn_free(freeme);
-      }
-      if (dp && dp != GetCurrentProcess()) {
-        CloseHandle(dp);
-      }
-    }
+  if ((sb = ntspawn_malloc(sizeof(*sb)))) {
+    rc = ntspawn2(args, sb);
+  } else {
+    rc = -1;
   }
-  if (sb)
-    ntspawn_free(sb);
   ALLOW_SIGNALS;
   return rc;
 }

libc/calls/pledge-linux.c

@@ -1641,7 +1641,6 @@ static privileged void AllowMmapExec(struct Filter *f) {
 //
 //   - MAP_LOCKED   (0x02000)
 //   - MAP_NONBLOCK (0x10000)
-//   - MAP_HUGETLB  (0x40000)
 //
 static privileged void AllowMmapNoexec(struct Filter *f) {
   static const struct sock_filter fragment[] = {
@@ -1650,7 +1649,7 @@ static privileged void AllowMmapNoexec(struct Filter *f) {
       /*L2*/ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, ~(PROT_READ | PROT_WRITE)),
       /*L3*/ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, 0, 8 - 4),
       /*L4*/ BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(args[3])),  // flags
-      /*L5*/ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x52000),
+      /*L5*/ BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x12000),
       /*L6*/ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, 0, 1),
       /*L7*/ BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ALLOW),
       /*L8*/ BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(nr)),

libc/calls/struct/iovec.internal.h

@@ -5,7 +5,6 @@
 #include "libc/mem/alloca.h"
 COSMOPOLITAN_C_START_
 
-ssize_t __robust_writev(int, struct iovec *, int);
 int64_t sys_preadv(int, struct iovec *, int, int64_t, int64_t);
 int64_t sys_pwritev(int, const struct iovec *, int, int64_t, int64_t);
 int64_t sys_readv(int32_t, const struct iovec *, int32_t);

libc/fmt/sleb64.c

@@ -45,7 +45,7 @@ char *sleb64(char *p, int64_t x) {
       *p++ = c;
       return p;
     } else {
-      *p++ = c | 64;
+      *p++ = c | 128;
     }
   }
 }

libc/integral/normalize.inc

@@ -4,7 +4,7 @@
 
 #define __COSMOPOLITAN_MAJOR__ 3
 #define __COSMOPOLITAN_MINOR__ 3
-#define __COSMOPOLITAN_PATCH__ 6
+#define __COSMOPOLITAN_PATCH__ 7
 #define __COSMOPOLITAN__                                                   \
   (100000000 * __COSMOPOLITAN_MAJOR__ + 1000000 * __COSMOPOLITAN_MINOR__ + \
    __COSMOPOLITAN_PATCH__)

libc/intrin/BUILD.mk

@@ -82,7 +82,16 @@ o//libc/intrin/memcmp.o					\
 o//libc/intrin/memset.o					\
 o//libc/intrin/memmove.o: private			\
 		CFLAGS +=				\
-			-O2 -finline -foptimize-sibling-calls
+			-O2				\
+			-finline			\
+			-foptimize-sibling-calls
+
+# make asan stack traces shorter
+o/$(MODE)/libc/intrin/asanthunk.o: private		\
+		CFLAGS +=				\
+			-Os				\
+			$(NO_MAGIC)			\
+			-foptimize-sibling-calls
 
 o/$(MODE)/libc/intrin/bzero.o				\
 o/$(MODE)/libc/intrin/memcmp.o				\

libc/intrin/describemapflags.c

@@ -30,6 +30,7 @@ const char *(DescribeMapFlags)(char buf[64], int x) {
       {MAP_SHARED, "SHARED"},                    //
       {MAP_FIXED, "FIXED"},                      //
       {MAP_FIXED_NOREPLACE, "FIXED_NOREPLACE"},  //
+      {MAP_HUGETLB, "HUGETLB"},                  //
       {MAP_CONCEAL, "CONCEAL"},                  //
       {MAP_LOCKED, "LOCKED"},                    //
       {MAP_NORESERVE, "NORESERVE"},              //

libc/intrin/strerror.c

@@ -18,9 +18,10 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/dce.h"
 #include "libc/fmt/magnumstrs.internal.h"
+#include "libc/stdalign.internal.h"
 #include "libc/str/str.h"
 
-_Alignas(1) static char strerror_buf[128];
+alignas(1) static char strerror_buf[128];
 
 /**
  * Returns string describing `err`.

libc/isystem/sys/auxv.h

@@ -2,4 +2,5 @@
 #define COSMOPOLITAN_LIBC_ISYSTEM_SYS_AUXV_H_
 #include "libc/runtime/runtime.h"
 #include "libc/sysv/consts/auxv.h"
+#include "libc/sysv/consts/hwcap.h"
 #endif /* COSMOPOLITAN_LIBC_ISYSTEM_SYS_AUXV_H_ */

libc/log/oncrash_amd64.c

@@ -192,6 +192,8 @@ void ShowCrashReportHook(int, int, int, struct siginfo *, ucontext_t *);
 
 static relegated void ShowCrashReport(int err, int sig, struct siginfo *si,
                                       ucontext_t *ctx) {
+  if (sig != SIGTRAP && sig != SIGQUIT)
+    sigaddset(&ctx->uc_sigmask, sig);
 #pragma GCC push_options
 #pragma GCC diagnostic ignored "-Walloca-larger-than="
   long size = __get_safe_size(8192, 4096);

libc/log/oncrash_arm64.c

@@ -191,6 +191,8 @@ static relegated char *GetSymbolName(struct SymbolTable *st, int symbol) {
 
 static relegated void __oncrash_impl(int sig, struct siginfo *si,
                                      ucontext_t *ctx) {
+  if (sig != SIGTRAP && sig != SIGQUIT)
+    sigaddset(&ctx->uc_sigmask, sig);
 #pragma GCC push_options
 #pragma GCC diagnostic ignored "-Walloca-larger-than="
   long size = __get_safe_size(10000, 4096);

libc/log/showcrashreports.c

@@ -85,13 +85,13 @@ void ShowCrashReports(void) {
 #ifdef __x86_64__
   InstallCrashHandler(SIGTRAP, 0);
 #else
-  InstallCrashHandler(SIGTRAP, SA_RESETHAND);
+  InstallCrashHandler(SIGTRAP, 0);
 #endif
-  InstallCrashHandler(SIGFPE, SA_RESETHAND);
-  InstallCrashHandler(SIGILL, SA_RESETHAND);
-  InstallCrashHandler(SIGBUS, SA_RESETHAND);
-  InstallCrashHandler(SIGABRT, SA_RESETHAND);
-  InstallCrashHandler(SIGSEGV, SA_RESETHAND | SA_ONSTACK);
+  InstallCrashHandler(SIGFPE, 0);
+  InstallCrashHandler(SIGILL, 0);
+  InstallCrashHandler(SIGBUS, 0);
+  InstallCrashHandler(SIGABRT, 0);
+  InstallCrashHandler(SIGSEGV, SA_ONSTACK);
 }
 
 IGNORE_LEAKS(ShowCrashReports)

libc/mem/tinymalloc.inc

@@ -16,6 +16,7 @@
 #include "libc/assert.h"
 #include "libc/errno.h"
 #include "libc/mem/mem.h"
+#include "libc/stdalign.internal.h"
 #include "libc/stdckdint.h"
 #include "libc/str/str.h"
 
@@ -29,7 +30,7 @@
 
 #ifndef MODE_DBG /* don't interfere with asan dlmalloc hooking */
 
-_Alignas(TINYMALLOC_MAX_ALIGN) static struct {
+alignas(TINYMALLOC_MAX_ALIGN) static struct {
   char memory[TINYMALLOC_MAX_BYTES];
   unsigned used, last, free;
 } heap;

libc/nexgen32e/kbase36.c

@@ -16,9 +16,10 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdalign.internal.h"
 #include "libc/str/tab.internal.h"
 
-_Alignas(uint8_t) const uint8_t kBase36[256] = {
+alignas(uint8_t) const uint8_t kBase36[256] = {
     ['0'] = 1,   //
     ['1'] = 2,   //
     ['2'] = 3,   //

libc/nexgen32e/ktolower.c

@@ -16,9 +16,10 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdalign.internal.h"
 #include "libc/str/tab.internal.h"
 
-_Alignas(uint8_t) const uint8_t kToLower[256] = {
+alignas(uint8_t) const uint8_t kToLower[256] = {
     0,   1,   2,   3,   4,   5,   6,    7,   8,    9,   10,  11,   12,  13,
     14,  15,  16,  17,  18,  19,  20,   21,  22,   23,  24,  25,   26,  27,
     28,  29,  30,  31,  ' ', '!', '\"', '#', '$',  '%', '&', '\'', '(', ')',

libc/nexgen32e/ktoupper.c

@@ -16,9 +16,10 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdalign.internal.h"
 #include "libc/str/tab.internal.h"
 
-_Alignas(uint8_t) const uint8_t kToUpper[256] = {
+alignas(uint8_t) const uint8_t kToUpper[256] = {
     0,   1,   2,   3,   4,   5,   6,    7,   8,    9,   10,  11,   12,  13,
     14,  15,  16,  17,  18,  19,  20,   21,  22,   23,  24,  25,   26,  27,
     28,  29,  30,  31,  ' ', '!', '\"', '#', '$',  '%', '&', '\'', '(', ')',

libc/proc/execve-nt.greg.c

@@ -91,9 +91,9 @@ textwindows int sys_execve_nt(const char *program, char *const argv[],
 
   // launch the process
   struct NtProcessInformation pi;
-  int rc = ntspawn(AT_FDCWD, program, argv, envp,
-                   (char *[]){fdspec, maskvar, 0}, 0, 0, hParentProcess,
-                   lpExplicitHandles, dwExplicitHandleCount, &si, &pi);
+  int rc = ntspawn(&(struct NtSpawnArgs){
+      AT_FDCWD, program, argv, envp, (char *[]){fdspec, maskvar, 0}, 0, 0,
+      hParentProcess, lpExplicitHandles, dwExplicitHandleCount, &si, &pi});
   __undescribe_fds(hParentProcess, lpExplicitHandles, dwExplicitHandleCount);
   if (rc == -1) {
     free(fdspec);

libc/proc/fork-nt.c

@@ -344,9 +344,10 @@ textwindows int sys_fork_nt(uint32_t dwCreationFlags) {
       }
 #endif
       NTTRACE("STARTING SPAWN");
-      int spawnrc = ntspawn(AT_FDCWD, GetProgramExecutableName(), args, environ,
-                            (char *[]){forkvar, 0}, dwCreationFlags, 0, 0, 0, 0,
-                            &startinfo, &procinfo);
+      int spawnrc = ntspawn(&(struct NtSpawnArgs){
+          AT_FDCWD, GetProgramExecutableName(), args, environ,
+          (char *[]){forkvar, 0}, dwCreationFlags, 0, 0, 0, 0, &startinfo,
+          &procinfo});
       if (spawnrc != -1) {
         CloseHandle(procinfo.hThread);
         ok = WriteAll(writer, jb, sizeof(jb)) &&

libc/proc/ntspawn.h

@@ -4,12 +4,25 @@
 #include "libc/nt/struct/startupinfo.h"
 COSMOPOLITAN_C_START_
 
-void mungentpath(char *);
-int mkntcmdline(char16_t[32767], char *const[]);
+struct NtSpawnArgs {
+  int64_t dirhand;
+  const char *prog;
+  char *const *argv;
+  char *const *envp;
+  char *const *extravars;
+  uint32_t dwCreationFlags;
+  const char16_t *opt_lpCurrentDirectory;
+  int64_t opt_hParentProcess;
+  int64_t *opt_lpExplicitHandleList;
+  uint32_t dwExplicitHandleCount;
+  const struct NtStartupInfo *lpStartupInfo;
+  struct NtProcessInformation *opt_out_lpProcessInformation;
+};
+
 int mkntenvblock(char16_t[32767], char *const[], char *const[], char[32767]);
-int ntspawn(int64_t, const char *, char *const[], char *const[], char *const[],
-            uint32_t, const char16_t *, int64_t, int64_t *, uint32_t,
-            const struct NtStartupInfo *, struct NtProcessInformation *);
+int ntspawn(struct NtSpawnArgs *);
+size_t mkntcmdline(char16_t *, char *const[], size_t);
+void mungentpath(char *);
 
 COSMOPOLITAN_C_END_
 #endif /* COSMOPOLITAN_NTSPAWN_H_ */

libc/proc/posix_spawn.c

@@ -382,9 +382,10 @@ static textwindows errno_t posix_spawn_nt_impl(
     envp = environ;
   if ((fdspec = __describe_fds(fds.p, fds.n, &startinfo, hCreatorProcess,
                                &lpExplicitHandles, &dwExplicitHandleCount))) {
-    rc = ntspawn(dirhand, path, argv, envp, (char *[]){fdspec, maskvar, 0},
-                 dwCreationFlags, lpCurrentDirectory, 0, lpExplicitHandles,
-                 dwExplicitHandleCount, &startinfo, &procinfo);
+    rc = ntspawn(&(struct NtSpawnArgs){
+        dirhand, path, argv, envp, (char *[]){fdspec, maskvar, 0},
+        dwCreationFlags, lpCurrentDirectory, 0, lpExplicitHandles,
+        dwExplicitHandleCount, &startinfo, &procinfo});
   }
   if (rc == -1) {
     err = errno;

libc/runtime/clone.c

@@ -78,7 +78,7 @@
 #define LWP_SUSPENDED                     0x00000080
 
 struct CloneArgs {
-  _Alignas(16) union {
+  alignas(16) union {
     struct {
       int tid;
       int this;

libc/runtime/enable_tls.c

@@ -35,6 +35,7 @@
 #include "libc/runtime/internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/runtime/syslib.internal.h"
+#include "libc/stdalign.internal.h"
 #include "libc/str/locale.h"
 #include "libc/str/str.h"
 #include "libc/thread/posixthread.internal.h"
@@ -47,7 +48,7 @@
 extern unsigned char __tls_mov_nt_rax[];
 extern unsigned char __tls_add_nt_rax[];
 
-_Alignas(TLS_ALIGNMENT) static char __static_tls[6016];
+alignas(TLS_ALIGNMENT) static char __static_tls[6016];
 
 static unsigned long ParseMask(const char *str) {
   int c;

libc/sock/accept-nt.c

@@ -87,10 +87,6 @@ static int sys_accept_nt_start(int64_t handle, struct NtOverlapped *overlap,
   if (g_acceptex.lpAcceptEx(args->listensock, handle, args->buffer, 0,
                             sizeof(args->buffer->local),
                             sizeof(args->buffer->remote), 0, overlap)) {
-    // inherit properties of listening socket
-    unassert(!__imp_setsockopt(args->listensock, SOL_SOCKET,
-                               kNtSoUpdateAcceptContext, &handle,
-                               sizeof(handle)));
     return 0;
   } else {
     return -1;
@@ -123,6 +119,13 @@ textwindows int sys_accept_nt(struct Fd *f, struct sockaddr_storage *addr,
     goto Finish;
   }
 
+  // inherit properties of listening socket
+  // errors ignored as if f->handle was created before forking
+  // this fails with WSAENOTSOCK, see
+  // https://github.com/jart/cosmopolitan/issues/1174
+  __imp_setsockopt(resources.handle, SOL_SOCKET, kNtSoUpdateAcceptContext,
+                   &f->handle, sizeof(f->handle));
+
   // create file descriptor for new socket
   // don't inherit the file open mode bits
   int oflags = 0;

libc/sock/connect-nt.c

@@ -35,11 +35,14 @@
 #include "libc/sock/syscall_fd.internal.h"
 #include "libc/sock/wsaid.internal.h"
 #include "libc/sysv/consts/o.h"
+#include "libc/sysv/consts/sol.h"
 #include "libc/sysv/errfuns.h"
 
 #ifdef __x86_64__
 #include "libc/sock/yoink.inc"
 
+__msabi extern typeof(__sys_setsockopt_nt) *const __imp_setsockopt;
+
 struct ConnectArgs {
   const void *addr;
   uint32_t addrsize;
@@ -113,6 +116,8 @@ static textwindows int sys_connect_nt_impl(struct Fd *f, const void *addr,
       // return ETIMEDOUT if SO_SNDTIMEO elapsed
       // note that Linux will return EINPROGRESS
       errno = etimedout();
+    } else if (!rc) {
+      __imp_setsockopt(f->handle, SOL_SOCKET, kNtSoUpdateConnectContext, 0, 0);
     }
     return rc;
   }
@@ -131,7 +136,11 @@ static textwindows int sys_connect_nt_impl(struct Fd *f, const void *addr,
     ok = WSAGetOverlappedResult(f->handle, overlap, &dwBytes, false, &dwFlags);
     WSACloseEvent(overlap->hEvent);
     free(overlap);
-    return ok ? 0 : __winsockerr();
+    if (!ok) {
+      return __winsockerr();
+    }
+    __imp_setsockopt(f->handle, SOL_SOCKET, kNtSoUpdateConnectContext, 0, 0);
+    return 0;
   } else if (WSAGetLastError() == kNtErrorIoPending) {
     f->connect_op = overlap;
     return einprogress();

libc/stdio/confstr.c

@@ -17,7 +17,6 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/paths.h"
-#include "libc/stdio/stdio.h"
 #include "libc/str/str.h"
 #include "libc/sysv/errfuns.h"
 #include "libc/unistd.h"

libc/stdio/fread_unlocked.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/assert.h"
 #include "libc/calls/calls.h"
 #include "libc/calls/struct/iovec.h"
 #include "libc/errno.h"
@@ -25,6 +26,41 @@
 #include "libc/stdio/stdio.h"
 #include "libc/str/str.h"
 #include "libc/sysv/consts/o.h"
+#include "libc/sysv/errfuns.h"
+
+static ssize_t readvall(int fd, struct iovec *iov, int iovlen) {
+  int olde;
+  ssize_t rc;
+  size_t got, toto;
+  toto = 0;
+  olde = errno;
+  do {
+    if ((rc = readv(fd, iov, iovlen)) == -1) {
+      if (toto && errno == EINTR) {
+        errno = olde;
+        continue;
+      }
+      return -1;
+    }
+    got = rc;
+    toto += got;
+    for (;;) {
+      if (!iov->iov_len) {
+        --iovlen;
+        ++iov;
+      } else if (got >= iov->iov_len) {
+        got -= iov->iov_len;
+        --iovlen;
+        ++iov;
+      } else {
+        iov->iov_base += got;
+        iov->iov_len -= got;
+        break;
+      }
+    }
+  } while (got && iovlen);
+  return toto;
+}
 
 /**
  * Reads data from stream.
@@ -36,11 +72,10 @@
 size_t fread_unlocked(void *buf, size_t stride, size_t count, FILE *f) {
   char *p;
   ssize_t rc;
-  size_t n, m;
   struct iovec iov[2];
-  if (!stride) {
-    return 0;
-  }
+  size_t n, m, got, need;
+
+  // check state and parameters
   if ((f->iomode & O_ACCMODE) == O_WRONLY) {
     f->state = errno = EBADF;
     return 0;
@@ -53,52 +88,74 @@ size_t fread_unlocked(void *buf, size_t stride, size_t count, FILE *f) {
     f->state = errno = EOVERFLOW;
     return 0;
   }
+  if (!n)
+    return 0;
+
+  // try to fulfill request from buffer if possible
   p = buf;
   m = f->end - f->beg;
-  if (MIN(n, m)) {
-    memcpy(p, f->buf + f->beg, MIN(n, m));
-  }
-  if (n < m) {
-    f->beg += n;
-    return count;
-  }
-  if (n == m) {
-    f->beg = f->end = 0;
+  if (n <= m) {
+    memcpy(p, f->buf + f->beg, n);
+    if ((f->beg += n) == f->end) {
+      f->beg = 0;
+      f->end = 0;
+    }
     return count;
   }
+
+  // handle end-of-file condition in fileless mode
   if (f->fd == -1) {
-    f->beg = 0;
-    f->end = 0;
-    f->state = -1;
+    m /= stride;
+    m *= stride;
+    if (m)
+      memcpy(p, f->buf + f->beg, m);
+    if ((f->beg += m) == f->end) {
+      f->state = EOF;
+      f->beg = 0;
+      f->end = 0;
+    }
     return m / stride;
   }
+
+  // `n` is number of bytes requested by caller
+  // `m` is how much of `n` came from existing buffer
+  // `iov[0]` reads remainder of the caller request
+  // `iov[1]` reads ahead extra content into buffer
+  if (m)
+    memcpy(p, f->buf + f->beg, m);
   iov[0].iov_base = p + m;
-  iov[0].iov_len = n - m;
+  iov[0].iov_len = need = n - m;
   if (f->bufmode != _IONBF && n < f->size) {
     iov[1].iov_base = f->buf;
-    if (f->size > PUSHBACK) {
+    if (f->size > PUSHBACK)
       iov[1].iov_len = f->size - PUSHBACK;
-    } else {
+    else
       iov[1].iov_len = f->size;
-    }
   } else {
     iov[1].iov_base = NULL;
     iov[1].iov_len = 0;
   }
-  if ((rc = readv(f->fd, iov, 2)) == -1) {
+  if ((rc = readvall(f->fd, iov, 2)) == -1) {
     f->state = errno;
     return 0;
   }
-  n = rc;
-  f->beg = 0;
-  f->end = 0;
-  if (n > iov[0].iov_len) {
-    f->end += n - iov[0].iov_len;
-    return count;
-  } else {
-    n = (m + n) / stride;
-    if (n < count)
-      f->state = -1;
-    return n;
+  got = rc;
+
+  // handle partial fulfillment
+  if (got < need) {
+    got += m;
+    if (got % stride) {
+      f->state = eio();
+      return 0;
+    }
+    f->beg = 0;
+    f->end = 0;
+    f->state = EOF;
+    return got / stride;
   }
+
+  // handle overfulfillment
+  f->beg = 0;
+  f->end = got - need;
+  return count;
 }

libc/stdio/fwrite_unlocked.c

@@ -27,6 +27,40 @@
 #include "libc/str/str.h"
 #include "libc/sysv/consts/o.h"
 
+static ssize_t writevall(int fd, struct iovec *iov, int iovlen) {
+  int olde;
+  ssize_t rc;
+  size_t got, toto;
+  toto = 0;
+  olde = errno;
+  do {
+    if ((rc = writev(fd, iov, iovlen)) == -1) {
+      if (toto && errno == EINTR) {
+        errno = olde;
+        continue;
+      }
+      return -1;
+    }
+    got = rc;
+    toto += got;
+    for (;;) {
+      if (!iov->iov_len) {
+        --iovlen;
+        ++iov;
+      } else if (got >= iov->iov_len) {
+        got -= iov->iov_len;
+        --iovlen;
+        ++iov;
+      } else {
+        iov->iov_base += got;
+        iov->iov_len -= got;
+        break;
+      }
+    }
+  } while (got && iovlen);
+  return toto;
+}
+
 /**
  * Writes data to stream.
  *
@@ -104,7 +138,7 @@ size_t fwrite_unlocked(const void *data, size_t stride, size_t count, FILE *f) {
   iov[1].iov_base = (void *)data;
   iov[1].iov_len = n;
   n += f->beg;
-  if (__robust_writev(f->fd, iov, 2) == -1) {
+  if ((rc = writevall(f->fd, iov, 2)) == -1) {
     f->state = errno;
     return 0;
   }

libc/stdio/readpassphrase.c

@@ -0,0 +1,212 @@
+/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:2;tab-width:8;coding:utf-8   -*-│
+│ vi: set noet ft=c ts=2 sts=2 sw=2 fenc=utf-8                             :vi │
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ $OpenBSD: readpassphrase.c,v 1.26 2016/10/18 12:47:18 millert Exp $          │
+│                                                                              │
+│ Copyright (c) 2000-2002, 2007, 2010                                          │
+│   Todd C. Miller <[email protected]>                                 │
+│                                                                              │
+│ Permission to use, copy, modify, and distribute this software for any        │
+│ purpose with or without fee is hereby granted, provided that the above       │
+│ copyright notice and this permission notice appear in all copies.            │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES     │
+│ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF             │
+│ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR      │
+│ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES       │
+│ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN        │
+│ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF      │
+│ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.               │
+│                                                                              │
+│ Sponsored in part by the Defense Advanced Research Projects                  │
+│ Agency (DARPA) and Air Force Research Laboratory, Air Force                  │
+│ Materiel Command, USAF, under agreement number F39502-99-1-0512.             │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/readpassphrase.h"
+#include "libc/calls/calls.h"
+#include "libc/calls/struct/sigaction.h"
+#include "libc/calls/termios.h"
+#include "libc/errno.h"
+#include "libc/paths.h"
+#include "libc/str/str.h"
+#include "libc/sysv/consts/fileno.h"
+#include "libc/sysv/consts/o.h"
+#include "libc/sysv/consts/sig.h"
+#include "libc/sysv/consts/termios.h"
+#include "libc/unistd.h"
+
+__notice(readpassphrase_notice, "\
+libbsd readpassphrase (ISC)\n\
+Copyright (c) 2000-2002, 2007, 2010 Todd C. Miller <[email protected]>");
+// clang-format off
+
+#ifndef TCSASOFT
+#define TCSASOFT 0
+#endif
+
+#ifndef _NSIG
+#if defined(NSIG)
+#define _NSIG NSIG
+#else
+/* The SIGRTMAX define might be set to a function such as sysconf(). */
+#define _NSIG (SIGRTMAX + 1)
+#endif
+#endif
+
+static volatile sig_atomic_t signo[_NSIG];
+
+static void handler(int);
+
+char *
+readpassphrase(const char *prompt, char *buf, size_t bufsiz, int flags)
+{
+	ssize_t nr;
+	int input, output, save_errno, i, need_restart;
+	char ch, *p, *end;
+	struct termios term, oterm;
+	struct sigaction sa, savealrm, saveint, savehup, savequit, saveterm;
+	struct sigaction savetstp, savettin, savettou, savepipe;
+
+	/* I suppose we could alloc on demand in this case (XXX). */
+	if (bufsiz == 0) {
+		errno = EINVAL;
+		return(NULL);
+	}
+
+restart:
+	for (i = 0; i < _NSIG; i++)
+		signo[i] = 0;
+	nr = -1;
+	save_errno = 0;
+	need_restart = 0;
+	/*
+	 * Read and write to /dev/tty if available.  If not, read from
+	 * stdin and write to stderr unless a tty is required.
+	 */
+	if ((flags & RPP_STDIN) ||
+	    (input = output = open(_PATH_TTY, O_RDWR)) == -1) {
+		if (flags & RPP_REQUIRE_TTY) {
+			errno = ENOTTY;
+			return(NULL);
+		}
+		input = STDIN_FILENO;
+		output = STDERR_FILENO;
+	}
+
+	/*
+	 * Turn off echo if possible.
+	 * If we are using a tty but are not the foreground pgrp this will
+	 * generate SIGTTOU, so do it *before* installing the signal handlers.
+	 */
+	if (input != STDIN_FILENO && tcgetattr(input, &oterm) == 0) {
+		memcpy(&term, &oterm, sizeof(term));
+		if (!(flags & RPP_ECHO_ON))
+			term.c_lflag &= ~(ECHO | ECHONL);
+#ifdef VSTATUS
+		if (term.c_cc[VSTATUS] != _POSIX_VDISABLE)
+			term.c_cc[VSTATUS] = _POSIX_VDISABLE;
+#endif
+		(void)tcsetattr(input, TCSAFLUSH|TCSASOFT, &term);
+	} else {
+		memset(&term, 0, sizeof(term));
+		term.c_lflag |= ECHO;
+		memset(&oterm, 0, sizeof(oterm));
+		oterm.c_lflag |= ECHO;
+	}
+
+	/*
+	 * Catch signals that would otherwise cause the user to end
+	 * up with echo turned off in the shell.  Don't worry about
+	 * things like SIGXCPU and SIGVTALRM for now.
+	 */
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;		/* don't restart system calls */
+	sa.sa_handler = handler;
+	(void)sigaction(SIGALRM, &sa, &savealrm);
+	(void)sigaction(SIGHUP, &sa, &savehup);
+	(void)sigaction(SIGINT, &sa, &saveint);
+	(void)sigaction(SIGPIPE, &sa, &savepipe);
+	(void)sigaction(SIGQUIT, &sa, &savequit);
+	(void)sigaction(SIGTERM, &sa, &saveterm);
+	(void)sigaction(SIGTSTP, &sa, &savetstp);
+	(void)sigaction(SIGTTIN, &sa, &savettin);
+	(void)sigaction(SIGTTOU, &sa, &savettou);
+
+	if (!(flags & RPP_STDIN))
+		(void)write(output, prompt, strlen(prompt));
+	end = buf + bufsiz - 1;
+	p = buf;
+	while ((nr = read(input, &ch, 1)) == 1 && ch != '\n' && ch != '\r') {
+		if (p < end) {
+			if ((flags & RPP_SEVENBIT))
+				ch &= 0x7f;
+			if (isalpha((unsigned char)ch)) {
+				if ((flags & RPP_FORCELOWER))
+					ch = (char)tolower((unsigned char)ch);
+				if ((flags & RPP_FORCEUPPER))
+					ch = (char)toupper((unsigned char)ch);
+			}
+			*p++ = ch;
+		}
+	}
+	*p = '\0';
+	save_errno = errno;
+	if (!(term.c_lflag & ECHO))
+		(void)write(output, "\n", 1);
+
+	/* Restore old terminal settings and signals. */
+	if (memcmp(&term, &oterm, sizeof(term)) != 0) {
+		const int sigttou = signo[SIGTTOU];
+
+		/* Ignore SIGTTOU generated when we are not the fg pgrp. */
+		while (tcsetattr(input, TCSAFLUSH|TCSASOFT, &oterm) == -1 &&
+		    errno == EINTR && !signo[SIGTTOU])
+			continue;
+		signo[SIGTTOU] = sigttou;
+	}
+	(void)sigaction(SIGALRM, &savealrm, NULL);
+	(void)sigaction(SIGHUP, &savehup, NULL);
+	(void)sigaction(SIGINT, &saveint, NULL);
+	(void)sigaction(SIGQUIT, &savequit, NULL);
+	(void)sigaction(SIGPIPE, &savepipe, NULL);
+	(void)sigaction(SIGTERM, &saveterm, NULL);
+	(void)sigaction(SIGTSTP, &savetstp, NULL);
+	(void)sigaction(SIGTTIN, &savettin, NULL);
+	(void)sigaction(SIGTTOU, &savettou, NULL);
+	if (input != STDIN_FILENO)
+		(void)close(input);
+
+	/*
+	 * If we were interrupted by a signal, resend it to ourselves
+	 * now that we have restored the signal handlers.
+	 */
+	for (i = 0; i < _NSIG; i++) {
+		if (signo[i]) {
+			kill(getpid(), i);
+			if (i == SIGTSTP || i == SIGTTIN || i == SIGTTOU) {
+				need_restart = 1;
+			}
+		}
+	}
+	if (need_restart)
+		goto restart;
+
+	if (save_errno)
+		errno = save_errno;
+	return(nr == -1 ? NULL : buf);
+}
+
+#if 0
+char *
+getpass(const char *prompt)
+{
+	static char buf[_PASSWORD_LEN + 1];
+
+	return(readpassphrase(prompt, buf, sizeof(buf), RPP_ECHO_OFF));
+}
+#endif
+
+static void handler(int s)
+{
+	signo[s] = 1;
+}

libc/stdio/readpassphrase.h

@@ -0,0 +1,17 @@
+#ifndef COSMOPOLITAN_LIBC_STDIO_READPASSPHRASE_H_
+#define COSMOPOLITAN_LIBC_STDIO_READPASSPHRASE_H_
+
+#define RPP_ECHO_OFF    0x00
+#define RPP_ECHO_ON     0x01
+#define RPP_REQUIRE_TTY 0x02
+#define RPP_FORCELOWER  0x04
+#define RPP_FORCEUPPER  0x08
+#define RPP_SEVENBIT    0x10
+#define RPP_STDIN       0x20
+
+COSMOPOLITAN_C_START_
+
+char *readpassphrase(const char *, char *, size_t, int) libcesque;
+
+COSMOPOLITAN_C_END_
+#endif /* COSMOPOLITAN_LIBC_STDIO_READPASSPHRASE_H_ */

libc/stdio/stdio.h

@@ -79,7 +79,6 @@ int setvbuf(FILE *, char *, int, size_t) libcesque;
 int pclose(FILE *) libcesque;
 char *ctermid(char *) libcesque;
 void perror(const char *) libcesque relegated;
-size_t confstr(int, char *, size_t) libcesque;
 
 typedef uint64_t fpos_t;
 char *gets(char *) libcesque paramsnonnull();

libc/stdio/vdprintf.c

@@ -16,7 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/calls/struct/iovec.internal.h"
+#include "libc/calls/struct/iovec.h"
 #include "libc/dce.h"
 #include "libc/fmt/internal.h"
 #include "libc/limits.h"
@@ -42,7 +42,7 @@ static int vdprintf_putc(const char *s, struct VdprintfState *t, size_t n) {
       iov[0].iov_len = t->n;
       iov[1].iov_base = (void *)s;
       iov[1].iov_len = n;
-      if (__robust_writev(t->fd, iov, 2) == -1) {
+      if (writev(t->fd, iov, 2) == -1) {
         return -1;
       }
       t->t += t->n;
@@ -68,7 +68,7 @@ int vdprintf(int fd, const char *fmt, va_list va) {
   if (t.n) {
     iov[0].iov_base = t.b;
     iov[0].iov_len = t.n;
-    if (__robust_writev(t.fd, iov, 1) == -1) {
+    if (writev(t.fd, iov, 1) == -1) {
       return -1;
     }
     t.t += t.n;

libc/str/khextoint.c

@@ -16,9 +16,10 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdalign.internal.h"
 #include "libc/str/tab.internal.h"
 
-_Alignas(int8_t) const int8_t kHexToInt[256] = {
+alignas(int8_t) const int8_t kHexToInt[256] = {
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  // 0x00
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  // 0x10
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  // 0x20

libc/sysv/consts.sh

@@ -230,6 +230,7 @@ syscon	mmap	MAP_NORESERVE				0x00004000		0x00004000		0x00000040		0x00000040		0
 syscon	mmap	MAP_POPULATE				0x00008000		0x00008000		0			0			0x00040000		0			0			0			# MAP_PREFAULT_READ on FreeBSD; can avoid madvise(MADV_WILLNEED) on private file mapping
 syscon	mmap	MAP_NONBLOCK				0x00010000		0x00010000		0			0			0			0			0			0
 syscon	mmap	MAP_SYNC				0x00080000		0x00080000		0			0			0			0			0			0			# perform synchronous page faults for mapping (Linux 4.15+)
+syscon	mmap	MAP_HUGETLB				0x00040000		-1			-1			-1			-1			-1			-1			-1			# make it inherit across execve()
 syscon	mmap	MAP_INHERIT				-1			-1			-1			-1			-1			-1			0x00000080		-1			# make it inherit across execve()
 syscon	mmap	MAP_HASSEMAPHORE			0			0			0x00000200		0x00000200		0x00000200		0			0x00000200		0			# does it matter on x86?
 syscon	mmap	MAP_NOSYNC				0			0			0			0			0x00000800		0			0			0			# flush to physical media only when necessary rather than gratuitously; be sure to use write() rather than ftruncate() with this!

libc/sysv/consts/MAP_HUGETLB.S

@@ -0,0 +1,2 @@
+#include "libc/sysv/consts/syscon.internal.h"
+.syscon mmap,MAP_HUGETLB,0x00040000,-1,-1,-1,-1,-1,-1,-1

libc/sysv/consts/map.h

@@ -13,6 +13,7 @@ extern const int MAP_FILE;
 extern const int MAP_FIXED;
 extern const int MAP_FIXED_NOREPLACE;
 extern const int MAP_HASSEMAPHORE;
+extern const int MAP_HUGETLB;
 extern const int MAP_INHERIT;
 extern const int MAP_JIT;
 extern const int MAP_LOCKED;

libc/testlib/BUILD.mk

@@ -13,6 +13,7 @@ LIBC_TESTLIB_A = o/$(MODE)/libc/testlib/testlib.a
 LIBC_TESTLIB_A_CHECKS = $(LIBC_TESTLIB_A).pkg
 
 LIBC_TESTLIB_A_ASSETS =						\
+	libc/testlib/blake2b256_tests.txt			\
 	libc/testlib/blocktronics.txt				\
 	libc/testlib/viewables.txt				\
 	libc/testlib/hyperion.txt				\
@@ -32,6 +33,7 @@ LIBC_TESTLIB_A_HDRS =						\
 
 LIBC_TESTLIB_A_SRCS_S =						\
 	libc/testlib/bench.S					\
+	libc/testlib/blake2b256_tests.S				\
 	libc/testlib/blocktronics.S				\
 	libc/testlib/fixture.S					\
 	libc/testlib/hyperion.S					\
@@ -124,6 +126,7 @@ $(LIBC_TESTLIB_A).pkg:						\
 		$(LIBC_TESTLIB_A_OBJS)				\
 		$(foreach x,$(LIBC_TESTLIB_A_DIRECTDEPS),$($(x)_A).pkg)
 
+o/$(MODE)/libc/testlib/blake2b256_tests.o: libc/testlib/blake2b256_tests.txt
 o/$(MODE)/libc/testlib/blocktronics.o: libc/testlib/blocktronics.txt
 o/$(MODE)/libc/testlib/viewables.o: libc/testlib/viewables.txt
 o/$(MODE)/libc/testlib/hyperion.o: libc/testlib/hyperion.txt
@@ -132,6 +135,8 @@ o/$(MODE)/libc/testlib/moby.o: libc/testlib/moby.txt
 # these assembly files are safe to build on aarch64
 o/$(MODE)/libc/testlib/bench.o: libc/testlib/bench.S
 	@$(COMPILE) -AOBJECTIFY.S $(OBJECTIFY.S) $(OUTPUT_OPTION) -c $<
+o/$(MODE)/libc/testlib/blake2b256_tests.o: libc/testlib/blake2b256_tests.S
+	@$(COMPILE) -AOBJECTIFY.S $(OBJECTIFY.S) $(OUTPUT_OPTION) -c $<
 o/$(MODE)/libc/testlib/blocktronics.o: libc/testlib/blocktronics.S
 	@$(COMPILE) -AOBJECTIFY.S $(OBJECTIFY.S) $(OUTPUT_OPTION) -c $<
 o/$(MODE)/libc/testlib/fixture.o: libc/testlib/fixture.S

libc/testlib/blake2b256_tests.S

@@ -1,7 +1,7 @@
-/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
-│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8                               :vi │
+/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8     -*-│
+│ vi: set noet ft=asm ts=8 sw=8 fenc=utf-8                                 :vi │
 ╞══════════════════════════════════════════════════════════════════════════════╡
-│ Copyright 2021 Justine Alexandra Roberts Tunney                              │
+│ Copyright 2024 Justine Alexandra Roberts Tunney                              │
 │                                                                              │
 │ Permission to use, copy, modify, and/or distribute this software for         │
 │ any purpose with or without fee is hereby granted, provided that the         │
@@ -16,30 +16,18 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/calls/struct/iovec.h"
-#include "libc/calls/struct/iovec.internal.h"
-#include "libc/errno.h"
+#include "libc/macros.internal.h"
+.rodata
 
-ssize_t __robust_writev(int fd, struct iovec *iov, int iovlen) {
-  ssize_t rc;
-  size_t wrote;
-  do {
-    if ((rc = writev(fd, iov, iovlen)) != -1) {
-      wrote = rc;
-      do {
-        if (wrote >= iov->iov_len) {
-          wrote -= iov->iov_len;
-          ++iov;
-          --iovlen;
-        } else {
-          iov->iov_base = (char *)iov->iov_base + wrote;
-          iov->iov_len -= wrote;
-          wrote = 0;
-        }
-      } while (wrote);
-    } else if (errno != EINTR) {
-      return -1;
-    }
-  } while (iovlen);
-  return 0;
-}
+//	Blake2B256 test vectors.
+	.underrun
+kBlake2b256Tests:
+0:	.incbin	"libc/testlib/blake2b256_tests.txt"
+1:	.byte	0
+	.endobj	kBlake2b256Tests,globl
+	.overrun
+
+	.balign	8
+kBlake2b256TestsSize:
+	.quad	1b-0b
+	.endobj	kBlake2b256TestsSize,globl

libc/testlib/ezbenchreport.c

@@ -17,6 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/intrin/kprintf.h"
+#include "libc/intrin/safemacros.internal.h"
 #include "libc/math.h"
 #include "libc/runtime/runtime.h"
 
@@ -32,7 +33,7 @@ void __testlib_ezbenchreport_n(const char *form, char z, size_t n, double c) {
   char msg[128];
   __warn_if_powersave();
   ksnprintf(msg, sizeof(msg), "%s %c=%d", form, z, n);
-  cn = lrint(c / 3);
+  cn = max(lrint(c / 3), 1);
   if (!n) {
     kprintf("\n");
     kprintf(" *     %-28s", msg);

libc/unistd.h

@@ -4,6 +4,8 @@ COSMOPOLITAN_C_START_
 
 #define _CS_PATH 0
 
+size_t confstr(int, char *, size_t) libcesque;
+
 #if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE) || \
     defined(_COSMO_SOURCE)
 void encrypt(char *, int) libcesque;

net/turfwar/turfwar.c

@@ -1817,7 +1817,6 @@ StartOver:
       CHECK_DB(sqlite3_bind_int64(stmt, 1, v[i].ip));
       CHECK_DB(sqlite3_bind_text(stmt, 2, v[i].name, -1, SQLITE_TRANSIENT));
       CHECK_DB(sqlite3_bind_int64(stmt, 3, v[i].created));
-      CHECK_DB(sqlite3_bind_int64(stmt, 3, v[i].created));
       CHECK_DB((rc = DbStep(stmt)) == SQLITE_DONE ? SQLITE_OK : rc);
       CHECK_DB(sqlite3_reset(stmt));
       ++processed;

test/libc/calls/mkntcmdline_test.c

@@ -27,39 +27,53 @@
 
 char16_t cmdline[32767];
 
+TEST(mkntcmdline, empty) {
+  char16_t buf2[2];
+  EXPECT_EQ(0, mkntcmdline(buf2, (char *[]){0}, 2));
+  EXPECT_STREQ(u"", buf2);
+}
+
+TEST(mkntcmdline, truncation) {
+  char *argv[] = {"foo", NULL};
+  EXPECT_EQ(3, mkntcmdline(0, argv, 0));
+  char16_t buf2[2];
+  EXPECT_EQ(3, mkntcmdline(buf2, argv, 2));
+  EXPECT_STREQ(u"f", buf2);
+}
+
 TEST(mkntcmdline, emptyArgvList_cantBeEmptyOnWindows) {
   char *argv[] = {"foo", NULL};
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv));
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv, 32767));
   EXPECT_STREQ(u"foo", cmdline);
 }
 
 TEST(mkntcmdline, emptyArgvListWithProg_isEmpty) {
   char *argv[] = {NULL};
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv));
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv, 32767));
   EXPECT_STREQ(u"", cmdline);
 }
 
 TEST(mkntcmdline, emptyArg_getsQuoted) {
   char *argv[] = {"", NULL};
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv));
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv, 32767));
   EXPECT_STREQ(u"\"\"", cmdline);
 }
 
 TEST(mkntcmdline, ignoranceIsBliss) {
   char *argv[] = {"echo", "hello", "world", NULL};
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv));
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv, 32767));
   EXPECT_STREQ(u"echo hello world", cmdline);
 }
 
 TEST(mkntcmdline, spaceInArgument_getQuotesWrappedAround) {
   char *argv[] = {"echo", "hello there", "world", NULL};
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv));
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv, 32767));
   EXPECT_STREQ(u"echo \"hello there\" world", cmdline);
 }
 
 TEST(mkntcmdline, justSlash) {
   char *argv[] = {"\\", NULL};
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv));
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv, 32767));
   EXPECT_STREQ(u"\\", cmdline);
 }
 
@@ -69,7 +83,7 @@ TEST(mkntcmdline, testUnicode) {
       gc(strdup("要依法治国是赞美那些谁是公义的和惩罚恶人。 - 韩非")),
       NULL,
   };
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv1));
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv1, 32767));
   EXPECT_STREQ(u"(╯°□°)╯ \"要依法治国是赞美那些谁是公义的和惩罚恶人。 - 韩非\"",
                cmdline);
 }
@@ -80,13 +94,13 @@ TEST(mkntcmdline, fixit) {
       "--version",
       NULL,
   };
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv1));
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv1, 32767));
   EXPECT_STREQ(u"\"C:\\Program Files\\doom\\doom.exe\" --version", cmdline);
 }
 
 TEST(mkntcmdline, testWut) {
   char *argv[] = {"C:\\Users\\jart\\𝑟𝑒𝑑𝑏𝑒𝑎𝑛", "--strace", NULL};
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv));
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv, 32767));
   EXPECT_STREQ(u"C:\\Users\\jart\\𝑟𝑒𝑑𝑏𝑒𝑎𝑛 --strace", cmdline);
 }
 
@@ -95,5 +109,5 @@ BENCH(mkntcmdline, lotsOfArgs) {
   for (int i = 0; i < 999; ++i) {
     argv[i] = "hello there hello there";
   }
-  EZBENCH2("mkntcmdline", donothing, unassert(!mkntcmdline(cmdline, argv)));
+  EZBENCH2("mkntcmdline", donothing, mkntcmdline(cmdline, argv, 32767));
 }

test/libc/runtime/zipos_test.c

@@ -33,9 +33,9 @@
 
 __static_yoink("zipos");
 __static_yoink("libc/testlib/hyperion.txt");
-__static_yoink("inflate");
-__static_yoink("inflateInit2");
-__static_yoink("inflateEnd");
+__static_yoink("_Cz_inflate");
+__static_yoink("_Cz_inflateInit2");
+__static_yoink("_Cz_inflateEnd");
 
 void *Worker(void *arg) {
   int i, fd;

test/libc/sock/BUILD.mk

@@ -68,7 +68,8 @@ o/$(MODE)/test/libc/sock/shutdown_test.runs		\
 o/$(MODE)/test/libc/sock/setsockopt_test.runs		\
 o/$(MODE)/test/libc/sock/sendfile_test.runs		\
 o/$(MODE)/test/libc/sock/poll_test.runs			\
-o/$(MODE)/test/libc/sock/pollfd_test.runs:		\
+o/$(MODE)/test/libc/sock/pollfd_test.runs		\
+o/$(MODE)/test/libc/sock/getpeername_test.runs:		\
 		private .PLEDGE = stdio rpath wpath cpath fattr proc inet
 
 o/$(MODE)/test/libc/sock/sendrecvmsg_test.runs:		\

test/libc/sock/getpeername_test.c

@@ -0,0 +1,154 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8                               :vi │
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2024 Gavin Arthur Hayes                                            │
+│                                                                              │
+│ Permission to use, copy, modify, and/or distribute this software for         │
+│ any purpose with or without fee is hereby granted, provided that the         │
+│ above copyright notice and this permission notice appear in all copies.      │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
+│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
+│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
+│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
+│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
+│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
+│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
+│ PERFORMANCE OF THIS SOFTWARE.                                                │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/dce.h"
+#include "libc/sock/sock.h"
+#include "libc/sock/struct/sockaddr.h"
+#include "libc/sysv/consts/af.h"
+#include "libc/sysv/consts/ipproto.h"
+#include "libc/sysv/consts/limits.h"
+#include "libc/sysv/consts/sock.h"
+#include "libc/testlib/subprocess.h"
+#include "libc/testlib/testlib.h"
+
+TEST(getpeername, worksAfterAcceptingOnFork) {
+  // https://github.com/jart/cosmopolitan/issues/1174
+  if (IsWindows()) {
+    return;
+  }
+  char buf[16] = {0};
+  uint32_t addrsize = sizeof(struct sockaddr_in);
+  struct sockaddr_in addr = {
+      .sin_family = AF_INET,
+      .sin_addr.s_addr = htonl(0x7f000001),
+  };
+  ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
+  ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
+  ASSERT_SYS(0, 0, getsockname(3, (struct sockaddr *)&addr, &addrsize));
+  ASSERT_SYS(0, 0, listen(3, SOMAXCONN));
+  SPAWN(fork);
+  ASSERT_SYS(0, 4, accept(3, (struct sockaddr *)&addr, &addrsize));
+  struct sockaddr_storage out = {0};
+  uint32_t out_size = sizeof(out);
+  ASSERT_SYS(0, 0, getpeername(4, (struct sockaddr *)&out, &out_size));
+  EXPECT_GE(sizeof(struct sockaddr_in), out_size);
+  EXPECT_EQ(AF_INET, ((struct sockaddr_in *)&out)->sin_family);
+  EXPECT_EQ(htonl(0x7f000001), ((struct sockaddr_in *)&out)->sin_addr.s_addr);
+  ASSERT_SYS(0, 5, send(4, "hello", 5, 0));
+  PARENT();
+  ASSERT_SYS(0, 0, close(3));
+  ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
+  ASSERT_SYS(0, 0, connect(3, (struct sockaddr *)&addr, sizeof(addr)));
+  ASSERT_SYS(0, 5, read(3, buf, 16));
+  ASSERT_STREQ("hello", buf);
+  ASSERT_SYS(0, 0, close(3));
+  WAIT(exit, 0);
+}
+
+TEST(getpeername, worksAfterAcceptingOnParent) {
+  char buf[16] = {0};
+  uint32_t addrsize = sizeof(struct sockaddr_in);
+  struct sockaddr_in addr = {
+      .sin_family = AF_INET,
+      .sin_addr.s_addr = htonl(0x7f000001),
+  };
+  ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
+  ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
+  ASSERT_SYS(0, 0, getsockname(3, (struct sockaddr *)&addr, &addrsize));
+  ASSERT_SYS(0, 0, listen(3, SOMAXCONN));
+  SPAWN(fork);
+  ASSERT_SYS(0, 0, close(3));
+  ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
+  ASSERT_SYS(0, 0, connect(3, (struct sockaddr *)&addr, sizeof(addr)));
+  ASSERT_SYS(0, 5, read(3, buf, 16));
+  ASSERT_STREQ("hello", buf);
+  PARENT();
+  ASSERT_SYS(0, 4, accept(3, (struct sockaddr *)&addr, &addrsize));
+  struct sockaddr_storage out = {0};
+  uint32_t out_size = sizeof(out);
+  ASSERT_SYS(0, 0, getpeername(4, (struct sockaddr *)&out, &out_size));
+  EXPECT_GE(sizeof(struct sockaddr_in), out_size);
+  EXPECT_EQ(AF_INET, ((struct sockaddr_in *)&out)->sin_family);
+  EXPECT_EQ(htonl(0x7f000001), ((struct sockaddr_in *)&out)->sin_addr.s_addr);
+  ASSERT_SYS(0, 5, send(4, "hello", 5, 0));
+  ASSERT_SYS(0, 0, close(4));
+  ASSERT_SYS(0, 0, close(3));
+  WAIT(exit, 0);
+}
+
+TEST(getpeername, worksAfterConnectingOnFork) {
+  char buf[16] = {0};
+  uint32_t addrsize = sizeof(struct sockaddr_in);
+  struct sockaddr_in addr = {
+      .sin_family = AF_INET,
+      .sin_addr.s_addr = htonl(0x7f000001),
+  };
+  ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
+  ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
+  ASSERT_SYS(0, 0, getsockname(3, (struct sockaddr *)&addr, &addrsize));
+  ASSERT_SYS(0, 0, listen(3, SOMAXCONN));
+  ASSERT_SYS(0, 4, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
+  SPAWN(fork);
+  ASSERT_SYS(0, 0, close(3));
+  ASSERT_SYS(0, 0, connect(4, (struct sockaddr *)&addr, sizeof(addr)));
+  struct sockaddr_storage out = {0};
+  uint32_t out_size = sizeof(out);
+  ASSERT_SYS(0, 0, getpeername(4, (struct sockaddr *)&out, &out_size));
+  EXPECT_GE(sizeof(struct sockaddr_in), out_size);
+  EXPECT_EQ(AF_INET, ((struct sockaddr_in *)&out)->sin_family);
+  EXPECT_EQ(htonl(0x7f000001), ((struct sockaddr_in *)&out)->sin_addr.s_addr);
+  ASSERT_SYS(0, 5, send(4, "hello", 5, 0));
+  PARENT();
+  ASSERT_SYS(0, 0, close(4));
+  ASSERT_SYS(0, 4, accept(3, (struct sockaddr *)&addr, &addrsize));
+  ASSERT_SYS(0, 5, read(4, buf, 16));
+  ASSERT_STREQ("hello", buf);
+  ASSERT_SYS(0, 0, close(4));
+  ASSERT_SYS(0, 0, close(3));
+  WAIT(exit, 0);
+}
+
+TEST(getpeername, worksAfterConnectingOnParent) {
+  char buf[16] = {0};
+  uint32_t addrsize = sizeof(struct sockaddr_in);
+  struct sockaddr_in addr = {
+      .sin_family = AF_INET,
+      .sin_addr.s_addr = htonl(0x7f000001),
+  };
+  ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
+  ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
+  ASSERT_SYS(0, 0, getsockname(3, (struct sockaddr *)&addr, &addrsize));
+  ASSERT_SYS(0, 0, listen(3, SOMAXCONN));
+  SPAWN(fork);
+  ASSERT_SYS(0, 4, accept(3, (struct sockaddr *)&addr, &addrsize));
+  ASSERT_SYS(0, 5, read(4, buf, 16));
+  ASSERT_STREQ("hello", buf);
+  PARENT();
+  ASSERT_SYS(0, 0, close(3));
+  ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
+  ASSERT_SYS(0, 0, connect(3, (struct sockaddr *)&addr, sizeof(addr)));
+  struct sockaddr_storage out = {0};
+  uint32_t out_size = sizeof(out);
+  ASSERT_SYS(0, 0, getpeername(3, (struct sockaddr *)&out, &out_size));
+  EXPECT_GE(sizeof(struct sockaddr_in), out_size);
+  EXPECT_EQ(AF_INET, ((struct sockaddr_in *)&out)->sin_family);
+  EXPECT_EQ(htonl(0x7f000001), ((struct sockaddr_in *)&out)->sin_addr.s_addr);
+  ASSERT_SYS(0, 5, send(3, "hello", 5, 0));
+  ASSERT_SYS(0, 0, close(3));
+  WAIT(exit, 0);
+}

test/libc/sock/socket_test.c

@@ -152,8 +152,6 @@ __attribute__((__constructor__)) static void StdioPro(int argc, char *argv[]) {
 }
 
 TEST(socket, canBeUsedAsExecutedStdio) {
-  if (IsWindows())
-    return;  // TODO(jart): What broke this?
   char buf[16] = {0};
   const char *prog;
   uint32_t addrsize = sizeof(struct sockaddr_in);

test/libc/stdio/freopen_test.c

@@ -16,53 +16,67 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/stdio/stdio.h"
-#include "libc/testlib/testlib.h"
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
 
 /*
  * This test was contributed by @ahgamut
  * https://github.com/jart/cosmopolitan/issues/61#issuecomment-792214575
  */
 
-void SetUpOnce(void) {
-  testlib_enable_tmp_setup_teardown();
+char path[PATH_MAX];
+
+void teardown(void) {
+  unlink(path);
 }
 
-int writefile(const char* filename) {
-  int stat = 0;
-  FILE* fp = fopen(filename, "w");
-  stat = fputs("cosmopolitan libc\n", fp);
-  fclose(fp);
-  return stat;
-}
-
-int readfile(const char* filename) {
-  int stat = 0;
-  char buf1[30];
-  char buf2[30];
-  FILE *fp1, *fp2;
-  fp1 = fopen(filename, "r");
-  if (!fp1) {
-    printf("failed to read %s in r\n", filename);
+int setup(void) {
+  int fd;
+  const char* tmpdir;
+  if ((tmpdir = getenv("TMPDIR")))
+    strlcpy(path, tmpdir, sizeof(path));
+  else
+    strlcpy(path, "/tmp", sizeof(path));
+  strlcat(path, "/freopen_test.XXXXXX", sizeof(path));
+  if ((fd = mkstemp(path)) == -1)
     return 1;
-  }
-  buf1[0] = fgetc(fp1);
-  buf1[1] = '\0';
-  fp2 = freopen(filename, "rb", fp1);
-  if (!fp2) {
-    printf("failed to read %s in rb\n", filename);
-    return 1;
-  }
-  stat = fread(buf2, sizeof(buf2[0]), 20, fp2);
-  ASSERT_EQ(18, stat);
-  buf2[stat] = '\0';
-  fclose(fp2);
-  ASSERT_STREQ("c", buf1);
-  ASSERT_STREQ("cosmopolitan libc\n", buf2);
+  if (write(fd, "cosmopolitan libc\n", 18) != 18)
+    return 2;
+  if (close(fd))
+    return 3;
   return 0;
 }
 
-TEST(freopen, test) {
-  writefile("file.txt");
-  readfile("file.txt");
+int test(void) {
+  FILE* fp;
+  char buf[20];
+  if (!(fp = fopen(path, "r")))
+    return 4;
+  if (fgetc(fp) != 'c')
+    return 5;
+  if (!(fp = freopen(path, "rb", fp)))
+    return 6;
+  if (fread(buf, 1, 20, fp) != 18)
+    return 7;
+  if (memcmp(buf, "cosmopolitan libc\n", 18))
+    return 8;
+  if (fclose(fp))
+    return 9;
+  return 0;
+}
+
+int main(int argc, char* argv[]) {
+  int rc;
+  if ((rc = setup())) {
+    perror(path);
+    teardown();
+    return rc;
+  }
+  rc = test();
+  teardown();
+  return rc;
 }

test/libc/str/blake2_test.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdio/stdio.h"
 #include "libc/str/blake2.h"
 #include "libc/assert.h"
 #include "libc/mem/mem.h"
@@ -26,6 +27,9 @@
 #include "libc/testlib/hyperion.h"
 #include "libc/testlib/testlib.h"
 
+__static_yoink("libc/testlib/blake2b256_tests.txt");
+__static_yoink("zipos");
+
 uint8_t *EZBLAKE2B256(const char *s, size_t n) {
   static uint8_t digest[BLAKE2B256_DIGEST_LENGTH];
   BLAKE2B256(s, n, digest);
@@ -63,7 +67,27 @@ TEST(BLAKE2B256Test, ABC) {
   EXPECT_BINEQ(
       "03170a2e7597b7b7e3d84c05391d139a62b157e78786d8c082f29dcf4c111314",
       HEXBLAKE2B256("00"));
-  /* TODO(jart): do rest */
+}
+
+TEST(BLAKE2B256Test, vectors) {
+  char *line = NULL;
+  size_t cap = 0;
+  ssize_t n;
+  FILE *f = fopen("/zip/libc/testlib/blake2b256_tests.txt", "r");
+  uint8_t *digest = 0;
+  while ((n = getline(&line, &cap, f)) != -1) {
+    if (n < 2 || line[0] == '#')
+      continue;
+    line[n - 1] = 0;
+    if (!strncmp(line, "IN:", 3)) {
+      digest = HEXBLAKE2B256(line + 4);
+    }
+    if (!strncmp(line, "HASH: ", 6)) {
+      EXPECT_BINEQ(line + 6, digest);
+    }
+  }
+  fclose(f);
+  free(line);
 }
 
 BENCH(blake2, bench) {

test/posix/BUILD.mk

@@ -52,6 +52,9 @@ o/$(MODE)/test/posix/%.dbg:			\
 		$(APE_NO_MODIFY_SELF)
 	@$(APELINK)
 
+o/$(MODE)/test/posix/fread3gb_test.runs:	\
+		private QUOTA += -F5gb -M5gb
+
 .PHONY: o/$(MODE)/test/posix
 o/$(MODE)/test/posix:				\
 		$(TEST_POSIX_BINS)		\

test/posix/fread3gb_test.c

@@ -0,0 +1,69 @@
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#define SIZE ((size_t)2 * 1024 * 1024 * 1024 + 13)
+
+char path[PATH_MAX];
+
+void teardown(void) {
+  unlink(path);
+}
+
+int setup(void) {
+  int fd;
+  struct stat st;
+  const char *tmpdir;
+  if (!stat("/dev/shm", &st))
+    strlcpy(path, "/dev/shm", sizeof(path));
+  else if ((tmpdir = getenv("TMPDIR")))
+    strlcpy(path, tmpdir, sizeof(path));
+  else
+    strlcpy(path, "/tmp", sizeof(path));
+  strlcat(path, "/fread3gb.XXXXXX", sizeof(path));
+  if ((fd = mkstemp(path)) == -1)
+    return 1;
+  if (ftruncate(fd, SIZE))
+    return 2;
+  if (pwrite(fd, "a", 1, 0) != 1)
+    return 3;
+  if (pwrite(fd, "z", 1, SIZE - 1) != 1)
+    return 4;
+  if (close(fd))
+    return 5;
+  return 0;
+}
+
+int test(void) {
+  FILE *f;
+  char *buf;
+  size_t rc;
+  if (!(f = fopen(path, "r")))
+    return 6;
+  if (!(buf = malloc(SIZE)))
+    return 7;
+  if ((rc = fread(buf, SIZE, 1, f)) != 1)
+    return 8;
+  if (buf[0] != 'a')
+    return 9;
+  if (buf[SIZE - 1] != 'z')
+    return 10;
+  if (fclose(f))
+    return 11;
+  return 0;
+}
+
+int main(int argc, char *argv[]) {
+  int rc;
+  if ((rc = setup())) {
+    perror(path);
+    teardown();
+    return rc;
+  }
+  rc = test();
+  teardown();
+  return rc;
+}

third_party/dlmalloc/platform.inc

@@ -111,7 +111,7 @@
 #if (MORECORE_CONTIGUOUS || defined(WIN32))
 #define DEFAULT_GRANULARITY (0)  /* 0 means to compute in init_mparams */
 #else   /* MORECORE_CONTIGUOUS */
-#define DEFAULT_GRANULARITY ((size_t)64U * (size_t)1024U)
+#define DEFAULT_GRANULARITY ((size_t)256U * (size_t)1024U)
 #endif  /* MORECORE_CONTIGUOUS */
 #endif  /* DEFAULT_GRANULARITY */
 #ifndef DEFAULT_TRIM_THRESHOLD

third_party/lua/README.cosmo

@@ -36,3 +36,5 @@ LOCAL MODIFICATIONS
   Added Python-like printf modulus operator for strings.
 
   Added Python-like printf multiply operator for strings.
+
+  Fixed a buffer overflow in os.tmpname

third_party/lua/loslib.c

@@ -133,12 +133,12 @@ __static_yoink("lua_notice");
 
 #if defined(LUA_USE_POSIX)	/* { */
 
-#define LUA_TMPNAMBUFSIZE	32
+#define LUA_TMPNAMBUFSIZE	128
 
 #define lua_tmpnam(b,e) { \
-        strcpy(b, __get_tmpdir()); \
-        strcat(b, "lua_XXXXXX"); \
-        e = mkstemp(b); \
+        strlcpy(b, __get_tmpdir(), LUA_TMPNAMBUFSIZE); \
+        e = strlcat(b, "lua_XXXXXX", LUA_TMPNAMBUFSIZE) >= LUA_TMPNAMBUFSIZE; \
+        e = e ? -1 : mkstemp(b); \
         if (e != -1) close(e); \
         e = (e == -1); }
 

third_party/musl/pwd.c

@@ -45,9 +45,9 @@ __static_yoink("musl_libc_notice");
 // something as substantive as this library, then we shall assume the
 // application is meaty enough to benefit from the performance of the
 // chromium zlib library (costs ~40kb binary) versus just having puff
-__static_yoink("inflateInit2");
-__static_yoink("inflate");
-__static_yoink("inflateEnd");
+__static_yoink("_Cz_inflateInit2");
+__static_yoink("_Cz_inflate");
+__static_yoink("_Cz_inflateEnd");
 #endif
 
 static char *

third_party/python/BUILD.mk

@@ -7,7 +7,7 @@ THIRD_PARTY_PYTHON_ARTIFACTS =						\
 	THIRD_PARTY_PYTHON_STAGE1_A					\
 	THIRD_PARTY_PYTHON_STAGE2_A					\
 	THIRD_PARTY_PYTHON_PYTEST_A					\
-	THIRD_PARTY_PYTHON_PYTHON					\
+	THIRD_PARTY_PYTHON_PYTHON3					\
 	THIRD_PARTY_PYTHON_FREEZE
 
 THIRD_PARTY_PYTHON_BINS =						\
@@ -17,7 +17,7 @@ THIRD_PARTY_PYTHON_BINS =						\
 THIRD_PARTY_PYTHON_COMS =						\
 	o/$(MODE)/third_party/python/Parser/asdl_c			\
 	o/$(MODE)/third_party/python/pystone				\
-	o/$(MODE)/third_party/python/python				\
+	o/$(MODE)/third_party/python/python3				\
 	o/$(MODE)/third_party/python/freeze				\
 	o/$(MODE)/third_party/python/pycomp				\
 	o/$(MODE)/third_party/python/pyobj				\
@@ -29,7 +29,7 @@ THIRD_PARTY_PYTHON_CHECKS =						\
 	$(THIRD_PARTY_PYTHON_STAGE2_A).pkg				\
 	$(THIRD_PARTY_PYTHON_PYTEST_A).pkg				\
 	$(THIRD_PARTY_PYTHON_HDRS:%=o/$(MODE)/%.ok)			\
-	o/$(MODE)/third_party/python/python.pkg				\
+	o/$(MODE)/third_party/python/python3.pkg			\
 	o/$(MODE)/third_party/python/freeze.pkg
 
 # TODO: Deal with aarch64 under qemu not making execve() easy.
@@ -3980,12 +3980,12 @@ THIRD_PARTY_PYTHON_SRCS =						\
 ################################################################################
 # PYTHON
 
-THIRD_PARTY_PYTHON_PYTHON_SRCS = third_party/python/python.c
-THIRD_PARTY_PYTHON_PYTHON_OBJS = o/$(MODE)/third_party/python/python.o
-THIRD_PARTY_PYTHON_PYTHON_COMS = o/$(MODE)/third_party/python/python
-THIRD_PARTY_PYTHON_PYTHON_BINS = $(THIRD_PARTY_PYTHON_PYTHON_COMS) $(THIRD_PARTY_PYTHON_PYTHON_COMS:%=%.dbg)
-THIRD_PARTY_PYTHON_PYTHON_DEPS = $(call uniq,$(foreach x,$(THIRD_PARTY_PYTHON_PYTHON_DIRECTDEPS),$($(x))))
-THIRD_PARTY_PYTHON_PYTHON_DIRECTDEPS =					\
+THIRD_PARTY_PYTHON_PYTHON3_SRCS = third_party/python/python3.c
+THIRD_PARTY_PYTHON_PYTHON3_OBJS = o/$(MODE)/third_party/python/python3.o
+THIRD_PARTY_PYTHON_PYTHON3_COMS = o/$(MODE)/third_party/python/python3
+THIRD_PARTY_PYTHON_PYTHON3_BINS = $(THIRD_PARTY_PYTHON_PYTHON3_COMS) $(THIRD_PARTY_PYTHON_PYTHON3_COMS:%=%.dbg)
+THIRD_PARTY_PYTHON_PYTHON3_DEPS = $(call uniq,$(foreach x,$(THIRD_PARTY_PYTHON_PYTHON3_DIRECTDEPS),$($(x))))
+THIRD_PARTY_PYTHON_PYTHON3_DIRECTDEPS =					\
 	LIBC_CALLS							\
 	LIBC_FMT							\
 	LIBC_INTRIN							\
@@ -4005,14 +4005,14 @@ THIRD_PARTY_PYTHON_PYTHON_DIRECTDEPS =					\
 	THIRD_PARTY_XED							\
 	TOOL_ARGS
 
-o/$(MODE)/third_party/python/python.pkg:				\
-		$(THIRD_PARTY_PYTHON_PYTHON_OBJS)			\
-		$(foreach x,$(THIRD_PARTY_PYTHON_PYTHON_DIRECTDEPS),$($(x)_A).pkg)
+o/$(MODE)/third_party/python/python3.pkg:				\
+		$(THIRD_PARTY_PYTHON_PYTHON3_OBJS)			\
+		$(foreach x,$(THIRD_PARTY_PYTHON_PYTHON3_DIRECTDEPS),$($(x)_A).pkg)
 
-o/$(MODE)/third_party/python/python.dbg:				\
-		o/$(MODE)/third_party/python/python.pkg			\
-		$(THIRD_PARTY_PYTHON_PYTHON_DEPS)			\
-		$(THIRD_PARTY_PYTHON_PYTHON_OBJS)			\
+o/$(MODE)/third_party/python/python3.dbg:				\
+		o/$(MODE)/third_party/python/python3.pkg		\
+		$(THIRD_PARTY_PYTHON_PYTHON3_DEPS)			\
+		$(THIRD_PARTY_PYTHON_PYTHON3_OBJS)			\
 		$(CRT)							\
 		$(APE_NO_MODIFY_SELF)
 	@$(APELINK)

third_party/zip/crc32.h

@@ -31,7 +31,7 @@
 #ifndef USE_ZLIB
    ZCONST ulg near *get_crc_table  OF((void));
 #endif
-#if (1 || defined(USE_ZLIB) || defined(CRC_TABLE_ONLY))
+#if (defined(USE_ZLIB) || defined(CRC_TABLE_ONLY))
 #  ifdef IZ_CRC_BE_OPTIMIZ
 #    undef IZ_CRC_BE_OPTIMIZ
 #  endif

third_party/zip/zipfile.c

@@ -72,7 +72,7 @@
 #include "libc/nt/winsock.h"
 #endif
 
-unsigned crc32(unsigned crc, const unsigned char *buf, unsigned len);
+unsigned _Cz_crc32(unsigned crc, const unsigned char *buf, unsigned len);
 
 /*
  * XXX start of zipfile.h
@@ -867,7 +867,7 @@ local void read_Unicode_Path_entry(pZipListEntry)
   }
   strcpy(iname, pZipListEntry->iname);
 
-  chksum = crc32(chksum, (uch *)(iname), strlen(iname));
+  chksum = _Cz_crc32(chksum, (uch *)(iname), strlen(iname));
 
   free(iname);
 
@@ -972,7 +972,7 @@ local void read_Unicode_Path_local_entry(pZipListEntry)
   }
   strcpy(iname, pZipListEntry->iname);
 
-  chksum = crc32(chksum, (uch *)(iname), strlen(iname));
+  chksum = _Cz_crc32(chksum, (uch *)(iname), strlen(iname));
 
   free(iname);
 
@@ -1558,7 +1558,7 @@ local int add_Unicode_Path_local_extra_field(pZEntry)
 # define inameLocal (pZEntry->iname)
 #endif
 
-  chksum = crc32(chksum, (uch *)(inameLocal), strlen(inameLocal));
+  chksum = _Cz_crc32(chksum, (uch *)(inameLocal), strlen(inameLocal));
 
 #ifdef WIN32_OEM
   free(inameLocal);
@@ -1685,7 +1685,7 @@ local int add_Unicode_Path_cen_extra_field(pZEntry)
 # define inameLocal (pZEntry->iname)
 #endif
 
-  chksum = crc32(chksum, (uch *)(inameLocal), strlen(inameLocal));
+  chksum = _Cz_crc32(chksum, (uch *)(inameLocal), strlen(inameLocal));
 
 #ifdef WIN32_OEM
   free(inameLocal);

third_party/zlib/zconf.h

@@ -13,7 +13,6 @@
 
 #define z_const const
 
-#if 0
 #define Z_COSMO_PREFIX_SET
 
 #define Bytef                    _Cz_Bytef
@@ -163,9 +162,6 @@
 #define zlibCompileFlags         _Cz_zlibCompileFlags
 #define zlibVersion              _Cz_zlibVersion
 
-#pragma message "zconf is included, so zlibVersion should be renamed"
-
-#endif
 
 typedef unsigned char Byte;
 typedef unsigned int uInt;   /* 16 bits or more */

tool/cosmocc/bin/cosmocc

@@ -15,7 +15,7 @@ $PROG (GCC) $GCC_VERSION
 Copyright (c) 2024 Justine Alexandra Roberts Tunney
 Cosmopolitan Libc and LLVM libcxx/compiler-rt are subject to non-GPL
 notice licenses, e.g. ISC, MIT, etc. Your compiled programs must embed
-our copyright notices. This toolchain is configured to do so default.
+our copyright notices. This toolchain is configured to do so by default.
 Cosmopolitan comes with absolutely NO WARRANTY of any kind.
 For more information, see the Cosmopolitan LICENSE files.
 Copyright (C) 2022 Free Software Foundation, Inc.
@@ -184,11 +184,6 @@ for x; do
     # no support for position independent executables
     # https://github.com/jart/cosmopolitan/issues/1126
     continue
-  elif [ x"$x" = x"-Werror" ] || \
-       [ x"$x" = x"-pedantic-errors" ]; then
-    # this toolchain is intended for building other people's code
-    # elevating warnings into errors, should only be done by devs
-    continue
   elif [ x"$x" = x"-static-libgcc" ] || \
        [ x"$x" = x"-shared-libgcc" ]; then
     # cosmopolitan.a always has llvm compiler runtime static code

tool/cosmocc/bin/cosmocross

@@ -165,11 +165,6 @@ for x; do
     # information."
     set -- "$@" -momit-leaf-frame-pointer -foptimize-sibling-calls
     continue
-  elif [ x"$x" != x"${x#-Werror}" ] || \
-       [ x"$x" = x"-pedantic-errors" ]; then
-    # this toolchain is intended for building other people's code
-    # elevating warnings into errors, should only be done by devs
-    continue
   elif [ x"$x" = x"-dumpversion" ]; then
     echo $GCC_VERSION
     exit 0