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68ee0f704c
Include the space needed to store the length of the message itself, in addition to the message string. This resolves BZ #32582. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed: Adhemerval Zanella <adhemerval.zanella@linaro.org>
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
/* Copyright (C) 1991-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <intprops.h>
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#include <ldsodefs.h>
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#include <libc-pointer-arith.h>
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#include <libintl.h>
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#include <libio/iolibio.h>
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#include <setvmaname.h>
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#include <sys/uio.h>
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#include <unistd.h>
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extern const char *__progname;
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#define fflush(s) _IO_fflush (s)
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/* This function, when passed a string containing an asserted
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expression, a filename, and a line number, prints a message
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on the standard error stream of the form:
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a.c:10: foobar: Assertion `a == b' failed.
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It then aborts program execution via a call to `abort'. */
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#ifdef FATAL_PREPARE_INCLUDE
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# include FATAL_PREPARE_INCLUDE
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#endif
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void
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__assert_fail_base (const char *fmt, const char *assertion, const char *file,
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unsigned int line, const char *function)
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{
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char *str;
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#ifdef FATAL_PREPARE
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FATAL_PREPARE;
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#endif
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int total = __asprintf (&str, fmt,
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__progname, __progname[0] ? ": " : "",
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file, line,
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function ? function : "", function ? ": " : "",
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assertion);
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if (total >= 0)
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{
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/* Print the message. */
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(void) __fxprintf (NULL, "%s", str);
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(void) fflush (stderr);
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total = ALIGN_UP (total + sizeof (struct abort_msg_s) + 1,
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GLRO(dl_pagesize));
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struct abort_msg_s *buf = __mmap (NULL, total, PROT_READ | PROT_WRITE,
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MAP_ANON | MAP_PRIVATE, -1, 0);
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if (__glibc_likely (buf != MAP_FAILED))
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{
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buf->size = total;
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strcpy (buf->msg, str);
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__set_vma_name (buf, total, " glibc: assert");
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/* We have to free the old buffer since the application might
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catch the SIGABRT signal. */
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struct abort_msg_s *old = atomic_exchange_acquire (&__abort_msg, buf);
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if (old != NULL)
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__munmap (old, old->size);
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}
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free (str);
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}
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else
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{
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/* At least print a minimal message. */
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char linebuf[INT_STRLEN_BOUND (int) + sizeof ":: "];
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struct iovec v[9];
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int i = 0;
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#define WS(s) (v[i].iov_len = strlen (v[i].iov_base = (void *) (s)), i++)
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if (__progname)
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{
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WS (__progname);
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WS (": ");
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}
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WS (file);
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v[i++] = (struct iovec) {.iov_base = linebuf,
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.iov_len = sprintf (linebuf, ":%d: ", line)};
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if (function)
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{
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WS (function);
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WS (": ");
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}
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WS ("Assertion `");
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WS (assertion);
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/* We omit the '.' here so that the assert tests can tell when
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this code path is taken. */
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WS ("' failed\n");
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(void) __writev (STDERR_FILENO, v, i);
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}
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abort ();
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}
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#undef __assert_fail
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void
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__assert_fail (const char *assertion, const char *file, unsigned int line,
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const char *function)
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{
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__assert_fail_base (_("%s%s%s:%u: %s%sAssertion `%s' failed.\n"),
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assertion, file, line, function);
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}
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