diff options
Diffstat (limited to 'REORG.TODO/assert/assert.c')
-rw-r--r-- | REORG.TODO/assert/assert.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/REORG.TODO/assert/assert.c b/REORG.TODO/assert/assert.c new file mode 100644 index 0000000000..57d9644e2f --- /dev/null +++ b/REORG.TODO/assert/assert.c @@ -0,0 +1,104 @@ +/* Copyright (C) 1991-2017 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 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#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; + +#include <wchar.h> +#include <libio/iolibio.h> +#define fflush(s) _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. + It then aborts program execution via a call to `abort'. */ + +#ifdef FATAL_PREPARE_INCLUDE +# include FATAL_PREPARE_INCLUDE +#endif + + +void +__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 + + 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 (__glibc_likely (buf != MAP_FAILED)) + { + 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 (); +} + + +#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) |