/* allocfail.c -- Test for libbacktrace library   Copyright (C) 2018-2026 Free Software Foundation, Inc. Redistribution and use in source and binary forms, with or withoutmodification, are permitted provided that the following conditions aremet:     (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 ORIMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIEDWARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AREDISCLAIMED. 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 ORSERVICES; 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) ARISINGIN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF SUCH DAMAGE.  */ #include <assert.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h> #include "filenames.h" #include "backtrace.h"#include "backtrace-supported.h" #include "testlib.h" extern uint64_t get_nr_allocs (void);extern void set_fail_at_alloc (uint64_t);extern int at_fail_alloc_p (void); static int test1 (void) __attribute__ ((noinline, unused));static int f2 (int) __attribute__ ((noinline));static int f3 (int, int) __attribute__ ((noinline)); static unsigned callback_errors = 0; static voiderror_callback_full (void *vdata ATTRIBUTE_UNUSED,		     const char *msg ATTRIBUTE_UNUSED,		     int errnum ATTRIBUTE_UNUSED){  if (at_fail_alloc_p ())    {      set_fail_at_alloc (0);      return;    }   callback_errors++;} static intcallback_full (void *vdata ATTRIBUTE_UNUSED, uintptr_t pc ATTRIBUTE_UNUSED,	      const char *filename ATTRIBUTE_UNUSED,	      int lineno ATTRIBUTE_UNUSED,	      const char *function ATTRIBUTE_UNUSED){   return 0;} static inttest1 (void){  return f2 (__LINE__) + 1;} static intf2 (int f1line){  return f3 (f1line, __LINE__) + 2;} static intf3 (int f1line ATTRIBUTE_UNUSED, int f2line ATTRIBUTE_UNUSED){  int i;   i = backtrace_full (state, 0, callback_full, error_callback_full, NULL);   if (i != 0)    {      fprintf (stderr, "test1: unexpected return value %d\n", i);      ++failures;    }   if (callback_errors)      ++failures;   return failures;} /* Run all the tests.  */ intmain (int argc, char **argv){  uint64_t fail_at = 0;   if (argc == 2)    {      fail_at = atoi (argv[1]);      set_fail_at_alloc (fail_at);    }   state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,				  error_callback_full, NULL);  if (state == NULL)    exit (failures ? EXIT_FAILURE : EXIT_SUCCESS); #if BACKTRACE_SUPPORTED  test1 ();#endif   if (argc == 1)    fprintf (stderr, "%llu\n", (long long unsigned) get_nr_allocs ());   exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);}