Define static_assert

[platform/upstream/glibc.git] / assert / assert.c

diff --git a/assert/assert.c b/assert/assert.c
index f114410..40fedb7 100644 (file)
--- a/assert/assert.c
+++ b/assert/assert.c
@@ -1,85 +1,106 @@
-/* Copyright (C) 1991, 1994, 1995, 1996, 1998 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
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
 
    The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   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>
 
 
-const char *__assert_program_name;
+extern const char *__progname;
 
-#ifdef USE_IN_LIBIO
-# 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 *str;
+
 #ifdef FATAL_PREPARE
   FATAL_PREPARE;
 #endif
 
-  /* Print the message.  */
-  (void) fprintf (stderr, _("%s%s%s:%u: %s%sAssertion `%s' failed.\n"),
-                 __assert_program_name ? __assert_program_name : "",
-                 __assert_program_name ? ": " : "",
+  int total;
+  if (__asprintf (&str, fmt,
+                 __progname, __progname[0] ? ": " : "",
                  file, line,
                  function ? function : "", function ? ": " : "",
-                 assertion);
-  (void) fflush (stderr);
+                 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
+    {
+      /* At least print a minimal message.  */
+      static const char errstr[] = "Unexpected error.\n";
+      __libc_write (STDERR_FILENO, errstr, sizeof (errstr) - 1);
+    }
 
   abort ();
 }
 
-#ifdef HAVE_GNU_LD
-
-#include <string.h>
 
-static void
-set_progname (int argc, char **argv, char **envp)
+#undef __assert_fail
+void
+__assert_fail (const char *assertion, const char *file, unsigned int line,
+              const char *function)
 {
-  char *p;
-
-  if (argv && argv[0])
-    {
-      p = strrchr (argv[0], '/');
-      if (p == NULL)
-       __assert_program_name = argv[0];
-      else
-       __assert_program_name = p + 1;
-    }
-
-  (void) &set_progname;                /* Avoid "defined but not used" warning.  */
+  __assert_fail_base (_("%s%s%s:%u: %s%sAssertion `%s' failed.\n%n"),
+                     assertion, file, line, function);
 }
-
-text_set_element (__libc_subinit, set_progname);
-
-#endif
+hidden_def(__assert_fail)