- Updated patches to the latest ones.

svn path=/trunk/tools/RosBE-Windows/; revision=420
This commit is contained in:
Peter Ward 2007-10-21 23:12:07 +00:00
parent 8705a1d762
commit c1bb5c3264
5 changed files with 331 additions and 293 deletions

View File

@ -0,0 +1,81 @@
Index: libstdc++-v3/config/os/mingw32/os_defines.h
===================================================================
--- libstdc++-v3/config/os/mingw32/os_defines.h (revision 129382)
+++ libstdc++-v3/config/os/mingw32/os_defines.h (working copy)
@@ -45,6 +45,13 @@
#undef NOMINMAX
#define NOMINMAX 1
+// mingw32 local hack: Override _GLIBCXX_USE_WCHAR_T for wstring
+#define _GLIBCXX_USE_WSTRING 1
+
+// mingw32 local hack: Cast long double to doubles to workaround
+// printf bug.
+#define _GLIBCXX_NO_LONG_DOUBLE_IO 0
+
// See libstdc++/20806.
#define _GLIBCXX_HAVE_DOS_BASED_FILESYSTEM 1
Index: libstdc++-v3/include/bits/char_traits.h
===================================================================
--- libstdc++-v3/include/bits/char_traits.h (revision 129382)
+++ libstdc++-v3/include/bits/char_traits.h (working copy)
@@ -295,7 +295,7 @@
};
-#ifdef _GLIBCXX_USE_WCHAR_T
+#if defined (_GLIBCXX_USE_WCHAR_T) || defined (_GLIBCXX_USE_WSTRING)
/// @brief 21.1.3.2 char_traits specializations
template<>
struct char_traits<wchar_t>
@@ -303,8 +303,10 @@
typedef wchar_t char_type;
typedef wint_t int_type;
typedef streamoff off_type;
+#if defined (_GLIBCXX_USE_WCHAR_T)
typedef wstreampos pos_type;
typedef mbstate_t state_type;
+#endif
static void
assign(char_type& __c1, const char_type& __c2)
Index: libstdc++-v3/include/bits/stringfwd.h
===================================================================
--- libstdc++-v3/include/bits/stringfwd.h (revision 129382)
+++ libstdc++-v3/include/bits/stringfwd.h (working copy)
@@ -59,7 +59,7 @@
typedef basic_string<char> string;
-#ifdef _GLIBCXX_USE_WCHAR_T
+#if defined (_GLIBCXX_USE_WCHAR_T) || defined (_GLIBCXX_USE_WSTRING)
template<> struct char_traits<wchar_t>;
typedef basic_string<wchar_t> wstring;
Index: libstdc++-v3/include/c_std/std_cwchar.h
===================================================================
--- libstdc++-v3/include/c_std/std_cwchar.h (revision 129382)
+++ libstdc++-v3/include/c_std/std_cwchar.h (working copy)
@@ -138,7 +138,7 @@
#undef wprintf
#undef wscanf
-#if _GLIBCXX_USE_WCHAR_T
+#if _GLIBCXX_USE_WCHAR_T || _GLIBCXX_USE_WSTRING
namespace std
{
using ::wint_t;
Index: libstdc++-v3/include/c_std/std_cwctype.h
===================================================================
--- libstdc++-v3/include/c_std/std_cwctype.h (revision 129382)
+++ libstdc++-v3/include/c_std/std_cwctype.h (working copy)
@@ -75,7 +75,7 @@
#undef wctrans
#undef wctype
-#if _GLIBCXX_USE_WCHAR_T
+#if _GLIBCXX_USE_WCHAR_T || _GLIBCXX_USE_WSTRING
namespace std
{
using ::wint_t; // cwchar

View File

@ -0,0 +1,137 @@
Index: gcc/target.h
===================================================================
--- gcc/target.h (revision 129382)
+++ gcc/target.h (working copy)
@@ -186,6 +186,13 @@
/* Output a DTP-relative reference to a TLS symbol. */
void (*output_dwarf_dtprel) (FILE *file, int size, rtx x);
+/* This target hook allows the operating system to modify the extern
+ assembler name
+ of a DECL. For example, windows targets use this to decorate stdcall and
+ fastcall functions
+ with a a trailing '@n'. */
+ void (*change_extern_name) (tree decl);
+
} asm_out;
/* Functions relating to instruction scheduling. */
Index: gcc/cp/method.c
===================================================================
--- gcc/cp/method.c (revision 129382)
+++ gcc/cp/method.c (working copy)
@@ -350,6 +350,8 @@
this translation unit. */
TREE_ADDRESSABLE (function) = 1;
mark_used (function);
+ /* The DECL_ASSEMBLER_NAME of the thunked function may need modification. */
+ targetm.asm_out.change_extern_name (function);
if (!emit_p)
return;
Index: gcc/target-def.h
===================================================================
--- gcc/target-def.h (revision 129382)
+++ gcc/target-def.h (working copy)
@@ -205,6 +205,10 @@
#define TARGET_ASM_OUTPUT_DWARF_DTPREL NULL
#endif
+#ifndef TARGET_ASM_CHANGE_EXTERN_NAME
+#define TARGET_ASM_CHANGE_EXTERN_NAME hook_void_tree
+#endif
+
#define TARGET_ASM_ALIGNED_INT_OP \
{TARGET_ASM_ALIGNED_HI_OP, \
TARGET_ASM_ALIGNED_SI_OP, \
@@ -248,7 +252,8 @@
TARGET_ASM_FILE_END, \
TARGET_ASM_EXTERNAL_LIBCALL, \
TARGET_ASM_MARK_DECL_PRESERVED, \
- TARGET_ASM_OUTPUT_DWARF_DTPREL}
+ TARGET_ASM_OUTPUT_DWARF_DTPREL, \
+ TARGET_ASM_CHANGE_EXTERN_NAME}
/* Scheduler hooks. All of these default to null pointers, which
haifa-sched.c looks for and handles. */
Index: gcc/config/i386/cygming.h
===================================================================
--- gcc/config/i386/cygming.h (revision 129382)
+++ gcc/config/i386/cygming.h (working copy)
@@ -335,6 +335,7 @@
extern void i386_pe_file_end (void);
extern int i386_pe_dllexport_name_p (const char *);
extern int i386_pe_dllimport_name_p (const char *);
+extern void i386_pe_decorate_assembler_name (tree);
/* For Win32 ABI compatibility */
#undef DEFAULT_PCC_STRUCT_RETURN
@@ -412,6 +413,7 @@
#define TARGET_VALID_DLLIMPORT_ATTRIBUTE_P i386_pe_valid_dllimport_attribute_p
#define TARGET_CXX_ADJUST_CLASS_AT_DEFINITION i386_pe_adjust_class_at_definition
+#define TARGET_ASM_CHANGE_EXTERN_NAME i386_pe_decorate_assembler_name
#undef TREE
Index: gcc/config/i386/winnt.c
===================================================================
--- gcc/config/i386/winnt.c (revision 129382)
+++ gcc/config/i386/winnt.c (working copy)
@@ -335,33 +335,38 @@
}
void
-i386_pe_encode_section_info (tree decl, rtx rtl, int first)
+i386_pe_decorate_assembler_name (tree decl)
{
- default_encode_section_info (decl, rtl, first);
+ tree type_attributes = TYPE_ATTRIBUTES (TREE_TYPE (decl));
+ tree newid = NULL_TREE;
- if (first && TREE_CODE (decl) == FUNCTION_DECL)
- {
- tree type_attributes = TYPE_ATTRIBUTES (TREE_TYPE (decl));
- tree newid = NULL_TREE;
+ if (lookup_attribute ("stdcall", type_attributes))
+ newid = gen_stdcall_or_fastcall_suffix (decl, false);
+ else if (lookup_attribute ("fastcall", type_attributes))
+ newid = gen_stdcall_or_fastcall_suffix (decl, true);
+ if (newid != NULL_TREE)
+ {
+ rtx rtlname = XEXP (DECL_RTL (decl), 0);
+ if (GET_CODE (rtlname) == MEM)
+ rtlname = XEXP (rtlname, 0);
+ XSTR (rtlname, 0) = IDENTIFIER_POINTER (newid);
- if (lookup_attribute ("stdcall", type_attributes))
- newid = gen_stdcall_or_fastcall_suffix (decl, false);
- else if (lookup_attribute ("fastcall", type_attributes))
- newid = gen_stdcall_or_fastcall_suffix (decl, true);
- if (newid != NULL_TREE)
- {
- rtx rtlname = XEXP (rtl, 0);
- if (GET_CODE (rtlname) == MEM)
- rtlname = XEXP (rtlname, 0);
- XSTR (rtlname, 0) = IDENTIFIER_POINTER (newid);
- /* These attributes must be present on first declaration,
+ /* These attributes must be present on first declaration,
change_decl_assembler_name will warn if they are added
later and the decl has been referenced, but duplicate_decls
should catch the mismatch before this is called. */
change_decl_assembler_name (decl, newid);
- }
}
+ }
+void
+i386_pe_encode_section_info (tree decl, rtx rtl, int first)
+{
+ default_encode_section_info (decl, rtl, first);
+
+ if (first && TREE_CODE (decl) == FUNCTION_DECL)
+ i386_pe_decorate_assembler_name (decl);
+
/* Mark the decl so we can tell from the rtl whether the object is
dllexport'd or dllimport'd. tree.c: merge_dllimport_decl_attributes
handles dllexport/dllimport override semantics. */

View File

@ -0,0 +1,98 @@
Index: gcc/config/i386/host-mingw32.c
===================================================================
--- gcc/config/i386/host-mingw32.c (revision 129490)
+++ gcc/config/i386/host-mingw32.c (working copy)
@@ -28,6 +28,8 @@
#define WIN32_LEAN_AND_MEAN /* Not so important if we have windows.h.gch. */
+#include <tchar.h>
+#include <stdlib.h>
#include <windows.h>
static void * mingw32_gt_pch_get_address (size_t, int);
@@ -47,7 +49,7 @@
static const size_t pch_VA_max_size = 128 * 1024 * 1024;
/* Granularity for reserving address space. */
-static const size_t va_granularity = 0x10000;
+static size_t va_granularity = 0x10000;
/* Print out the GetLastError() translation. */
static inline void
@@ -70,7 +72,9 @@
/* Granularity for reserving address space. */
static size_t mingw32_gt_pch_alloc_granularity (void)
{
- return va_granularity;
+ SYSTEM_INFO SysInfo;
+ GetSystemInfo(&SysInfo);
+ return (va_granularity = (size_t)SysInfo.dwAllocationGranularity);
}
/* Identify an address that's likely to be free in a subsequent invocation
@@ -116,6 +120,9 @@
{
void * mmap_addr;
static HANDLE mmap_handle;
+ TCHAR szMappingName[26];
+ OSVERSIONINFO version_info;
+ int i = 0;
if (size == 0)
return 0;
@@ -125,16 +132,49 @@
if ((offset & (va_granularity - 1)) != 0 || size > pch_VA_max_size)
return -1;
- mmap_handle = CreateFileMapping ((HANDLE) _get_osfhandle (fd),
- NULL, PAGE_WRITECOPY | SEC_COMMIT,
- 0, 0, NULL);
+ /* Determine the version of Windows we are running on. */
+ version_info.dwOSVersionInfoSize = sizeof (version_info);
+ GetVersionEx (&version_info);
+
+ srand(1);
+ while (1)
+ {
+ /* Generate a unique mapping name. This is neccessary to avoid
+ needing the SeCreateGlobalPrivilege privilege in certain cases.
+ However, the documentation for CreateFileMapping says that on NT4
+ and earlier, backslashes are invalid in object name. So, we need
+ to check if we are on Windows2000 or higher. */
+ _stprintf(szMappingName, _T("Local\\MinGWGCCPCH%08X"), rand());
+ mmap_handle = CreateFileMapping ((HANDLE) _get_osfhandle (fd),
+ NULL, PAGE_WRITECOPY | SEC_COMMIT,
+ 0, 0, (version_info.dwMajorVersion >
+ 4 ? szMappingName : NULL));
+ if (mmap_handle != NULL && GetLastError() == ERROR_ALREADY_EXISTS)
+ CloseHandle(mmap_handle);
+ else
+ break;
+ }
+
if (mmap_handle == NULL)
{
w32_error (__FUNCTION__, __FILE__, __LINE__, "CreateFileMapping");
return -1;
}
- mmap_addr = MapViewOfFileEx (mmap_handle, FILE_MAP_COPY, 0, offset,
- size, addr);
+ /* wait/retry a couple of times if needed.
+ Fixes a race when running multiple gcc's (-j) */
+ for(i = 0; i < 5; i++)
+ {
+ mmap_addr = MapViewOfFileEx (mmap_handle, FILE_MAP_COPY, 0, offset,
+ size, addr);
+ if (mmap_addr != addr)
+ {
+ Sleep(500);
+ }
+ else
+ {
+ break;
+ }
+ }
if (mmap_addr != addr)
{
w32_error (__FUNCTION__, __FILE__, __LINE__, "MapViewOfFileEx");

View File

@ -1,15 +1,15 @@
--- ld/pe-dll.c Thu Jul 19 13:12:24 2007
+++ ld/pe-dll.c Fri Aug 3 09:53:58 2007
@@ -524,10 +524,9 @@
}
}
- /* If we are not building a DLL, when there are no exports
+ /* If there are no exports
we do not build an export table at all. */
- if (!pe_dll_export_everything && pe_def_file->num_exports == 0
- && info->executable)
+ if (!pe_dll_export_everything && pe_def_file->num_exports == 0)
return;
/* Now, maybe export everything else the default way. */
--- ld/pe-dll.c Mon Aug 06 08:32:08 2007
+++ ld/pe-dll.c Tue Oct 16 18:47:02 2007
@@ -598,10 +598,9 @@
}
}
- /* If we are not building a DLL, when there are no exports
+ /* If there are no exports
we do not build an export table at all. */
- if (!pe_dll_export_everything && pe_def_file->num_exports == 0
- && info->executable)
+ if (!pe_dll_export_everything && pe_def_file->num_exports == 0)
return;
/* Now, maybe export everything else the default way. */

View File

@ -1,278 +0,0 @@
Index: gcc/config/i386/cygming.h
===================================================================
--- gcc/config/i386/cygming.h (revision 125623)
+++ gcc/config/i386/cygming.h (working copy)
@@ -335,6 +335,7 @@
extern void i386_pe_file_end (void);
extern int i386_pe_dllexport_name_p (const char *);
extern int i386_pe_dllimport_name_p (const char *);
+extern void i386_pe_decorate_assembler_name (tree);
/* For Win32 ABI compatibility */
#undef DEFAULT_PCC_STRUCT_RETURN
@@ -412,6 +413,7 @@
#define TARGET_VALID_DLLIMPORT_ATTRIBUTE_P i386_pe_valid_dllimport_attribute_p
#define TARGET_CXX_ADJUST_CLASS_AT_DEFINITION i386_pe_adjust_class_at_definition
+#define TARGET_ASM_CHANGE_EXTERN_NAME i386_pe_decorate_assembler_name
#undef TREE
Index: gcc/config/i386/host-mingw32.c
===================================================================
--- gcc/config/i386/host-mingw32.c (revision 125623)
+++ gcc/config/i386/host-mingw32.c (working copy)
@@ -28,6 +28,8 @@
#define WIN32_LEAN_AND_MEAN /* Not so important if we have windows.h.gch. */
+#include <tchar.h>
+#include <stdlib.h>
#include <windows.h>
static void * mingw32_gt_pch_get_address (size_t, int);
@@ -47,7 +49,7 @@
static const size_t pch_VA_max_size = 128 * 1024 * 1024;
/* Granularity for reserving address space. */
-static const size_t va_granularity = 0x10000;
+static size_t va_granularity = 0x10000;
/* Print out the GetLastError() translation. */
static inline void
@@ -70,7 +72,9 @@
/* Granularity for reserving address space. */
static size_t mingw32_gt_pch_alloc_granularity (void)
{
- return va_granularity;
+ SYSTEM_INFO SysInfo;
+ GetSystemInfo(&SysInfo);
+ return (va_granularity = (size_t)SysInfo.dwAllocationGranularity);
}
/* Identify an address that's likely to be free in a subsequent invocation
@@ -125,9 +129,23 @@
if ((offset & (va_granularity - 1)) != 0 || size > pch_VA_max_size)
return -1;
- mmap_handle = CreateFileMapping ((HANDLE) _get_osfhandle (fd),
- NULL, PAGE_WRITECOPY | SEC_COMMIT,
- 0, 0, NULL);
+ srand(1);
+ while (1)
+ {
+ TCHAR szMappingName[26];
+
+ /* Generate a unique mapping name. This is neccessary to avoid
+ needing the SeCreateGlobalPrivilege privilege in certain cases */
+ _stprintf(szMappingName, _T("Local\\MinGWGCCPCH%08X"), rand());
+ mmap_handle = CreateFileMapping ((HANDLE) _get_osfhandle (fd),
+ NULL, PAGE_WRITECOPY | SEC_COMMIT,
+ 0, 0, szMappingName);
+ if (mmap_handle != NULL && GetLastError() == ERROR_ALREADY_EXISTS)
+ CloseHandle(mmap_handle);
+ else
+ break;
+ }
+
if (mmap_handle == NULL)
{
w32_error (__FUNCTION__, __FILE__, __LINE__, "CreateFileMapping");
Index: gcc/config/i386/winnt.c
===================================================================
--- gcc/config/i386/winnt.c (revision 125623)
+++ gcc/config/i386/winnt.c (working copy)
@@ -335,33 +335,38 @@
}
void
-i386_pe_encode_section_info (tree decl, rtx rtl, int first)
+i386_pe_decorate_assembler_name (tree decl)
{
- default_encode_section_info (decl, rtl, first);
+ tree type_attributes = TYPE_ATTRIBUTES (TREE_TYPE (decl));
+ tree newid = NULL_TREE;
- if (first && TREE_CODE (decl) == FUNCTION_DECL)
- {
- tree type_attributes = TYPE_ATTRIBUTES (TREE_TYPE (decl));
- tree newid = NULL_TREE;
+ if (lookup_attribute ("stdcall", type_attributes))
+ newid = gen_stdcall_or_fastcall_suffix (decl, false);
+ else if (lookup_attribute ("fastcall", type_attributes))
+ newid = gen_stdcall_or_fastcall_suffix (decl, true);
+ if (newid != NULL_TREE)
+ {
+ rtx rtlname = XEXP (DECL_RTL (decl), 0);
+ if (GET_CODE (rtlname) == MEM)
+ rtlname = XEXP (rtlname, 0);
+ XSTR (rtlname, 0) = IDENTIFIER_POINTER (newid);
- if (lookup_attribute ("stdcall", type_attributes))
- newid = gen_stdcall_or_fastcall_suffix (decl, false);
- else if (lookup_attribute ("fastcall", type_attributes))
- newid = gen_stdcall_or_fastcall_suffix (decl, true);
- if (newid != NULL_TREE)
- {
- rtx rtlname = XEXP (rtl, 0);
- if (GET_CODE (rtlname) == MEM)
- rtlname = XEXP (rtlname, 0);
- XSTR (rtlname, 0) = IDENTIFIER_POINTER (newid);
- /* These attributes must be present on first declaration,
+ /* These attributes must be present on first declaration,
change_decl_assembler_name will warn if they are added
later and the decl has been referenced, but duplicate_decls
should catch the mismatch before this is called. */
change_decl_assembler_name (decl, newid);
- }
}
+ }
+void
+i386_pe_encode_section_info (tree decl, rtx rtl, int first)
+{
+ default_encode_section_info (decl, rtl, first);
+
+ if (first && TREE_CODE (decl) == FUNCTION_DECL)
+ i386_pe_decorate_assembler_name (decl);
+
/* Mark the decl so we can tell from the rtl whether the object is
dllexport'd or dllimport'd. tree.c: merge_dllimport_decl_attributes
handles dllexport/dllimport override semantics. */
Index: gcc/cp/method.c
===================================================================
--- gcc/cp/method.c (revision 125623)
+++ gcc/cp/method.c (working copy)
@@ -350,6 +350,8 @@
this translation unit. */
TREE_ADDRESSABLE (function) = 1;
mark_used (function);
+ /* The DECL_ASSEMBLER_NAME of the thunked function may need modification. */
+ targetm.asm_out.change_extern_name (function);
if (!emit_p)
return;
Index: gcc/target-def.h
===================================================================
--- gcc/target-def.h (revision 125623)
+++ gcc/target-def.h (working copy)
@@ -205,6 +205,10 @@
#define TARGET_ASM_OUTPUT_DWARF_DTPREL NULL
#endif
+#ifndef TARGET_ASM_CHANGE_EXTERN_NAME
+#define TARGET_ASM_CHANGE_EXTERN_NAME hook_void_tree
+#endif
+
#define TARGET_ASM_ALIGNED_INT_OP \
{TARGET_ASM_ALIGNED_HI_OP, \
TARGET_ASM_ALIGNED_SI_OP, \
@@ -248,7 +252,8 @@
TARGET_ASM_FILE_END, \
TARGET_ASM_EXTERNAL_LIBCALL, \
TARGET_ASM_MARK_DECL_PRESERVED, \
- TARGET_ASM_OUTPUT_DWARF_DTPREL}
+ TARGET_ASM_OUTPUT_DWARF_DTPREL, \
+ TARGET_ASM_CHANGE_EXTERN_NAME}
/* Scheduler hooks. All of these default to null pointers, which
haifa-sched.c looks for and handles. */
Index: gcc/target.h
===================================================================
--- gcc/target.h (revision 125623)
+++ gcc/target.h (working copy)
@@ -186,6 +186,13 @@
/* Output a DTP-relative reference to a TLS symbol. */
void (*output_dwarf_dtprel) (FILE *file, int size, rtx x);
+/* This target hook allows the operating system to modify the extern
+ assembler name
+ of a DECL. For example, windows targets use this to decorate stdcall and
+ fastcall functions
+ with a a trailing '@n'. */
+ void (*change_extern_name) (tree decl);
+
} asm_out;
/* Functions relating to instruction scheduling. */
Index: libstdc++-v3/config/os/mingw32/os_defines.h
===================================================================
--- libstdc++-v3/config/os/mingw32/os_defines.h (revision 125623)
+++ libstdc++-v3/config/os/mingw32/os_defines.h (working copy)
@@ -45,6 +45,13 @@
#undef NOMINMAX
#define NOMINMAX 1
+// mingw32 local hack: Override _GLIBCXX_USE_WCHAR_T for wstring
+#define _GLIBCXX_USE_WSTRING 1
+
+// mingw32 local hack: Cast long double to doubles to workaround
+// printf bug.
+#define _GLIBCXX_NO_LONG_DOUBLE_IO 0
+
// See libstdc++/20806.
#define _GLIBCXX_HAVE_DOS_BASED_FILESYSTEM 1
Index: libstdc++-v3/include/bits/char_traits.h
===================================================================
--- libstdc++-v3/include/bits/char_traits.h (revision 125623)
+++ libstdc++-v3/include/bits/char_traits.h (working copy)
@@ -295,7 +295,7 @@
};
-#ifdef _GLIBCXX_USE_WCHAR_T
+#if defined (_GLIBCXX_USE_WCHAR_T) || defined (_GLIBCXX_USE_WSTRING)
/// @brief 21.1.3.2 char_traits specializations
template<>
struct char_traits<wchar_t>
@@ -303,8 +303,10 @@
typedef wchar_t char_type;
typedef wint_t int_type;
typedef streamoff off_type;
+#if defined (_GLIBCXX_USE_WCHAR_T)
typedef wstreampos pos_type;
typedef mbstate_t state_type;
+#endif
static void
assign(char_type& __c1, const char_type& __c2)
Index: libstdc++-v3/include/bits/stringfwd.h
===================================================================
--- libstdc++-v3/include/bits/stringfwd.h (revision 125623)
+++ libstdc++-v3/include/bits/stringfwd.h (working copy)
@@ -59,7 +59,7 @@
typedef basic_string<char> string;
-#ifdef _GLIBCXX_USE_WCHAR_T
+#if defined (_GLIBCXX_USE_WCHAR_T) || defined (_GLIBCXX_USE_WSTRING)
template<> struct char_traits<wchar_t>;
typedef basic_string<wchar_t> wstring;
Index: libstdc++-v3/include/c_std/std_cwchar.h
===================================================================
--- libstdc++-v3/include/c_std/std_cwchar.h (revision 125623)
+++ libstdc++-v3/include/c_std/std_cwchar.h (working copy)
@@ -138,7 +138,7 @@
#undef wprintf
#undef wscanf
-#if _GLIBCXX_USE_WCHAR_T
+#if _GLIBCXX_USE_WCHAR_T || _GLIBCXX_USE_WSTRING
namespace std
{
using ::wint_t;
Index: libstdc++-v3/include/c_std/std_cwctype.h
===================================================================
--- libstdc++-v3/include/c_std/std_cwctype.h (revision 125623)
+++ libstdc++-v3/include/c_std/std_cwctype.h (working copy)
@@ -75,7 +75,7 @@
#undef wctrans
#undef wctype
-#if _GLIBCXX_USE_WCHAR_T
+#if _GLIBCXX_USE_WCHAR_T || _GLIBCXX_USE_WSTRING
namespace std
{
using ::wint_t; // cwchar