/* testlib.c -- test functions for libbacktrace library   Copyright (C) 2012-2026 Free Software Foundation, Inc.   Written by Ian Lance Taylor, Google. 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 "filenames.h" #include "backtrace.h" #include "testlib.h" /* The backtrace state.  */ void *state; /* The number of failures.  */ int failures; /* Return the base name in a path.  */ const char *base (const char *p){  const char *last;  const char *s;   last = NULL;  for (s = p; *s != '\0'; ++s)    {      if (IS_DIR_SEPARATOR (*s))	last = s + 1;    }  return last != NULL ? last : p;} /* Check an entry in a struct info array.  */ voidcheck (const char *name, int index, const struct info *all, int want_lineno,       const char *want_function, const char *want_file, int *failed){  if (*failed)    return;  if (all[index].filename == NULL || all[index].function == NULL)    {      fprintf (stderr, "%s: [%d]: missing file name or function name\n",	       name, index);      *failed = 1;      return;    }  if (strcmp (base (all[index].filename), want_file) != 0)    {      fprintf (stderr, "%s: [%d]: got %s expected %s\n", name, index,	       all[index].filename, want_file);      *failed = 1;    }  if (all[index].lineno != want_lineno)    {      fprintf (stderr, "%s: [%d]: got %d expected %d\n", name, index,	       all[index].lineno, want_lineno);      *failed = 1;    }  if (strcmp (all[index].function, want_function) != 0)    {      fprintf (stderr, "%s: [%d]: got %s expected %s\n", name, index,	       all[index].function, want_function);      *failed = 1;    }} /* The backtrace callback function.  */ intcallback_one (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED,	      const char *filename, int lineno, const char *function){  struct bdata *data = (struct bdata *) vdata;  struct info *p;   if (data->index >= data->max)    {      fprintf (stderr, "callback_one: callback called too many times\n");      data->failed = 1;      return 1;    }   p = &data->all[data->index];  if (filename == NULL)    p->filename = NULL;  else    {      p->filename = strdup (filename);      assert (p->filename != NULL);    }  p->lineno = lineno;  if (function == NULL)    p->function = NULL;  else    {      p->function = strdup (function);      assert (p->function != NULL);    }  ++data->index;   return 0;} /* An error callback passed to backtrace.  */ voiderror_callback_one (void *vdata, const char *msg, int errnum){  struct bdata *data = (struct bdata *) vdata;   fprintf (stderr, "%s", msg);  if (errnum > 0)    fprintf (stderr, ": %s", strerror (errnum));  fprintf (stderr, "\n");  data->failed = 1;} /* The backtrace_simple callback function.  */ intcallback_two (void *vdata, uintptr_t pc){  struct sdata *data = (struct sdata *) vdata;   if (data->index >= data->max)    {      fprintf (stderr, "callback_two: callback called too many times\n");      data->failed = 1;      return 1;    }   data->addrs[data->index] = pc;  ++data->index;   return 0;} /* An error callback passed to backtrace_simple.  */ voiderror_callback_two (void *vdata, const char *msg, int errnum){  struct sdata *data = (struct sdata *) vdata;   fprintf (stderr, "%s", msg);  if (errnum > 0)    fprintf (stderr, ": %s", strerror (errnum));  fprintf (stderr, "\n");  data->failed = 1;} /* The backtrace_syminfo callback function.  */ voidcallback_three (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED,		const char *symname, uintptr_t symval,		uintptr_t symsize){  struct symdata *data = (struct symdata *) vdata;   if (symname == NULL)    data->name = NULL;  else    {      data->name = strdup (symname);      assert (data->name != NULL);    }  data->val = symval;  data->size = symsize;} /* The backtrace_syminfo error callback function.  */ voiderror_callback_three (void *vdata, const char *msg, int errnum){  struct symdata *data = (struct symdata *) vdata;   fprintf (stderr, "%s", msg);  if (errnum > 0)    fprintf (stderr, ": %s", strerror (errnum));  fprintf (stderr, "\n");  data->failed = 1;} /* The backtrace_create_state error callback function.  */ voiderror_callback_create (void *data ATTRIBUTE_UNUSED, const char *msg,                       int errnum){  fprintf (stderr, "%s", msg);  if (errnum > 0)    fprintf (stderr, ": %s", strerror (errnum));  fprintf (stderr, "\n");  exit (EXIT_FAILURE);}