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- /* edtest.c -- Test for libbacktrace storage allocation stress handling
- Copyright (C) 2017-2022 Free Software Foundation, Inc.
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are
- met:
- (1) Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- (2) Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in
- the documentation and/or other materials provided with the
- distribution.
- (3) The name of the author may not be used to
- endorse or promote products derived from this software without
- specific prior written permission.
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
- INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGE. */
- #include "config.h"
- #include <assert.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <sys/types.h>
- #include "backtrace.h"
- #include "backtrace-supported.h"
- #include "internal.h"
- #include "testlib.h"
- static int test1 (void) __attribute__ ((noinline, noclone, unused));
- extern int f2 (int);
- extern int f3 (int, int);
- static int
- test1 (void)
- {
- /* Returning a value here and elsewhere avoids a tailcall which
- would mess up the backtrace. */
- return f2 (__LINE__) + 1;
- }
- int
- f3 (int f1line, int f2line)
- {
- struct info all[20];
- struct bdata data;
- int f3line;
- int i;
- data.all = &all[0];
- data.index = 0;
- data.max = 20;
- data.failed = 0;
- f3line = __LINE__ + 1;
- i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
- if (i != 0)
- {
- fprintf (stderr, "test1: unexpected return value %d\n", i);
- data.failed = 1;
- }
- if (data.index < 3)
- {
- fprintf (stderr,
- "test1: not enough frames; got %zu, expected at least 3\n",
- data.index);
- data.failed = 1;
- }
- check ("test1", 0, all, f3line, "f3", "edtest.c", &data.failed);
- check ("test1", 1, all, f2line, "f2", "edtest2_build.c", &data.failed);
- check ("test1", 2, all, f1line, "test1", "edtest.c", &data.failed);
- printf ("%s: backtrace_full alloc stress\n", data.failed ? "FAIL" : "PASS");
- if (data.failed)
- ++failures;
- return failures;
- }
- int
- main (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
- {
- state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
- error_callback_create, NULL);
- // Grab the storage allocation lock prior to doing anything interesting.
- // The intent here is to insure that the backtrace_alloc code is forced
- // to always call mmap() for new memory as opposed to reusing previously
- // allocated memory from the free list. Doing things this way helps
- // simulate what you might see in a multithreaded program in which there
- // are racing calls to the allocator.
- struct backtrace_state *state_internal =
- (struct backtrace_state *) state;
- state_internal->lock_alloc = 1;
- // Kick off the test
- test1();
- exit (failures > 0 ? EXIT_FAILURE : EXIT_SUCCESS);
- }
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