1/* allocfail.c -- Test for libbacktrace library 2 Copyright (C) 2018-2021 Free Software Foundation, Inc. 3 4Redistribution and use in source and binary forms, with or without 5modification, are permitted provided that the following conditions are 6met: 7 8 (1) Redistributions of source code must retain the above copyright 9 notice, this list of conditions and the following disclaimer. 10 11 (2) Redistributions in binary form must reproduce the above copyright 12 notice, this list of conditions and the following disclaimer in 13 the documentation and/or other materials provided with the 14 distribution. 15 16 (3) The name of the author may not be used to 17 endorse or promote products derived from this software without 18 specific prior written permission. 19 20THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 23DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 24INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 26SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 28STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30POSSIBILITY OF SUCH DAMAGE. */ 31 32#include <assert.h> 33#include <stdio.h> 34#include <stdlib.h> 35#include <string.h> 36#include <unistd.h> 37 38#include "filenames.h" 39 40#include "backtrace.h" 41#include "backtrace-supported.h" 42 43#include "testlib.h" 44 45extern uint64_t get_nr_allocs (void); 46extern void set_fail_at_alloc (uint64_t); 47extern int at_fail_alloc_p (void); 48 49static int test1 (void) __attribute__ ((noinline, unused)); 50static int f2 (int) __attribute__ ((noinline)); 51static int f3 (int, int) __attribute__ ((noinline)); 52 53static unsigned callback_errors = 0; 54 55static void 56error_callback_full (void *vdata ATTRIBUTE_UNUSED, 57 const char *msg ATTRIBUTE_UNUSED, 58 int errnum ATTRIBUTE_UNUSED) 59{ 60 if (at_fail_alloc_p ()) 61 { 62 set_fail_at_alloc (0); 63 return; 64 } 65 66 callback_errors++; 67} 68 69static int 70callback_full (void *vdata ATTRIBUTE_UNUSED, uintptr_t pc ATTRIBUTE_UNUSED, 71 const char *filename ATTRIBUTE_UNUSED, 72 int lineno ATTRIBUTE_UNUSED, 73 const char *function ATTRIBUTE_UNUSED) 74{ 75 76 return 0; 77} 78 79static int 80test1 (void) 81{ 82 return f2 (__LINE__) + 1; 83} 84 85static int 86f2 (int f1line) 87{ 88 return f3 (f1line, __LINE__) + 2; 89} 90 91static int 92f3 (int f1line ATTRIBUTE_UNUSED, int f2line ATTRIBUTE_UNUSED) 93{ 94 int i; 95 96 i = backtrace_full (state, 0, callback_full, error_callback_full, NULL); 97 98 if (i != 0) 99 { 100 fprintf (stderr, "test1: unexpected return value %d\n", i); 101 ++failures; 102 } 103 104 if (callback_errors) 105 ++failures; 106 107 return failures; 108} 109 110/* Run all the tests. */ 111 112int 113main (int argc, char **argv) 114{ 115 uint64_t fail_at = 0; 116 117 if (argc == 2) 118 { 119 fail_at = atoi (argv[1]); 120 set_fail_at_alloc (fail_at); 121 } 122 123 state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS, 124 error_callback_full, NULL); 125 if (state == NULL) 126 exit (failures ? EXIT_FAILURE : EXIT_SUCCESS); 127 128#if BACKTRACE_SUPPORTED 129 test1 (); 130#endif 131 132 if (argc == 1) 133 fprintf (stderr, "%llu\n", (long long unsigned) get_nr_allocs ()); 134 135 exit (failures ? EXIT_FAILURE : EXIT_SUCCESS); 136} 137