| /* edtest.c -- Test for libbacktrace storage allocation stress handling |
| Copyright (C) 2017-2024 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); |
| } |