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unwind: unify _LIBUNWIND_ABORT

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Rather than use the `__assert_rtn` on libSystem based targets and a local
`assert_rtn` function on others, expand the function definition into a macro
which will perform the writing to stderr and then abort.  This unifies the
definition and behaviour across targets.

Ensure that we flush stderr prior to aborting.

llvm-svn: 267364
This commit is contained in:
Saleem Abdulrasool 2016-04-24 21:00:59 +00:00
parent 7793ba86d1
commit 03a061ffeb
1 changed files with 8 additions and 18 deletions
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26
libunwind/src/config.h
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@ -16,6 +16,7 @@
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
// Define static_assert() unless already defined by compiler.
#ifndef __has_feature
@ -30,17 +31,8 @@
// Platform specific configuration defines.
#ifdef __APPLE__
#include <Availability.h>
#ifdef __cplusplus
extern "C" {
#endif
void __assert_rtn(const char *, const char *, int, const char *)
__attribute__((noreturn));
#ifdef __cplusplus
}
#endif
#define _LIBUNWIND_BUILD_SJLJ_APIS defined(__arm__)
#define _LIBUNWIND_ABORT(msg) __assert_rtn(__func__, __FILE__, __LINE__, msg)
#if defined(FOR_DYLD)
#define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 1
@ -52,17 +44,8 @@
#define _LIBUNWIND_SUPPORT_DWARF_INDEX 0
#endif
#else
#include <stdlib.h>
static inline void assert_rtn(const char* func, const char* file, int line, const char* msg) __attribute__ ((noreturn));
static inline void assert_rtn(const char* func, const char* file, int line, const char* msg) {
fprintf(stderr, "libunwind: %s %s:%d - %s\n", func, file, line, msg);
assert(false);
abort();
}
#define _LIBUNWIND_BUILD_SJLJ_APIS 0
#define _LIBUNWIND_ABORT(msg) assert_rtn(__func__, __FILE__, __LINE__, msg)
#if defined(__ARM_DWARF_EH__) || !defined(__arm__)
#define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 0
@ -94,6 +77,13 @@
#define _LIBUNWIND_BUILD_ZERO_COST_APIS 0
#endif
#define _LIBUNWIND_ABORT(msg) \
do { \
fprintf(stderr, "libunwind: %s %s:%d - %s\n", __func__, __FILE__, \
__LINE__, msg); \
fflush(stderr); \
abort(); \
} while (0)
#define _LIBUNWIND_LOG(msg, ...) fprintf(stderr, "libuwind: " msg, __VA_ARGS__)
// Macros that define away in non-Debug builds