-/* Copyright (C) 1991,1994,1995,1996,1998,2001 Free Software Foundation, Inc.
+/* Copyright (C) 1991,1994-1996,1998,2001,2002,2005,2009,2011
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
02111-1307 USA. */
#include <assert.h>
+#include <atomic.h>
+#include <ldsodefs.h>
#include <libintl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysdep.h>
+#include <unistd.h>
+#include <sys/mman.h>
extern const char *__progname;
-#ifdef USE_IN_LIBIO
-# include <wchar.h>
-# include <libio/iolibio.h>
-# define fflush(s) _IO_fflush (s)
-#endif
+#include <wchar.h>
+#include <libio/iolibio.h>
+#define fflush(s) INTUSE(_IO_fflush) (s)
/* This function, when passed a string containing an asserted
expression, a filename, and a line number, prints a message
on the standard error stream of the form:
- a.c:10: foobar: Assertion `a == b' failed.
+ a.c:10: foobar: Assertion `a == b' failed.
It then aborts program execution via a call to `abort'. */
#ifdef FATAL_PREPARE_INCLUDE
# include FATAL_PREPARE_INCLUDE
#endif
+
void
-__assert_fail (const char *assertion, const char *file, unsigned int line,
- const char *function)
+__assert_fail_base (const char *fmt, const char *assertion, const char *file,
+ unsigned int line, const char *function)
{
- char *buf;
+ char *str;
#ifdef FATAL_PREPARE
FATAL_PREPARE;
#endif
- (void) __asprintf (&buf, _("%s%s%s:%u: %s%sAssertion `%s' failed.\n"),
- __progname, __progname[0] ? ": " : "",
- file, line,
- function ? function : "", function ? ": " : "",
- assertion);
-
- /* Print the message. */
-#ifdef USE_IN_LIBIO
- if (_IO_fwide (stderr, 0) > 0)
- (void) __fwprintf (stderr, L"%s", buf);
+ int total;
+ if (__asprintf (&str, fmt,
+ __progname, __progname[0] ? ": " : "",
+ file, line,
+ function ? function : "", function ? ": " : "",
+ assertion, &total) >= 0)
+ {
+ /* Print the message. */
+ (void) __fxprintf (NULL, "%s", str);
+ (void) fflush (stderr);
+
+ total = (total + 1 + GLRO(dl_pagesize) - 1) & ~(GLRO(dl_pagesize) - 1);
+ struct abort_msg_s *buf = __mmap (NULL, total, PROT_READ | PROT_WRITE,
+ MAP_ANON | MAP_PRIVATE, -1, 0);
+ if (__builtin_expect (buf != MAP_FAILED, 1))
+ {
+ buf->size = total;
+ strcpy (buf->msg, str);
+
+ /* We have to free the old buffer since the application might
+ catch the SIGABRT signal. */
+ struct abort_msg_s *old = atomic_exchange_acq (&__abort_msg, buf);
+
+ if (old != NULL)
+ __munmap (old, old->size);
+ }
+
+ free (str);
+ }
else
-#endif
- (void) fputs (buf, stderr);
+ {
+ /* At least print a minimal message. */
+ static const char errstr[] = "Unexpected error.\n";
+ __libc_write (STDERR_FILENO, errstr, sizeof (errstr) - 1);
+ }
- (void) fflush (stderr);
+ abort ();
+}
- /* We have to free the buffer since the appplication might catch the
- SIGABRT. */
- free (buf);
- abort ();
+#undef __assert_fail
+void
+__assert_fail (const char *assertion, const char *file, unsigned int line,
+ const char *function)
+{
+ __assert_fail_base (_("%s%s%s:%u: %s%sAssertion `%s' failed.\n%n"),
+ assertion, file, line, function);
}
+hidden_def(__assert_fail)