cfa658e4f8
* backtrace.h (backtrace_syminfo): Update comment and parameter name to take any address, not just a PC value. * elf.c (STT_OBJECT): Define. (elf_nosyms): Rename parameter pc to addr. (elf_symbol_search): Rename local variable pc to addr. (elf_initialize_syminfo): Add STT_OBJECT symbols to elf_symbols. (elf_syminfo): Rename parameter pc to addr. * btest.c (global): New global variable. (test5): New test. (main): Call test5. From-SVN: r204904
677 lines
14 KiB
C
677 lines
14 KiB
C
/* btest.c -- Test for libbacktrace library
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Copyright (C) 2012-2013 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Google.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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(1) Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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(2) Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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(3) The name of the author may not be used to
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endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE. */
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/* This program tests the externally visible interfaces of the
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libbacktrace library. */
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "filenames.h"
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#include "backtrace.h"
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#include "backtrace-supported.h"
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/* Portable attribute syntax. Actually some of these tests probably
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won't work if the attributes are not recognized. */
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#ifndef GCC_VERSION
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# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
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#endif
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#if (GCC_VERSION < 2007)
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# define __attribute__(x)
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#endif
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#ifndef ATTRIBUTE_UNUSED
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# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
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#endif
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/* Used to collect backtrace info. */
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struct info
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{
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char *filename;
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int lineno;
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char *function;
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};
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/* Passed to backtrace callback function. */
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struct bdata
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{
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struct info *all;
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size_t index;
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size_t max;
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int failed;
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};
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/* Passed to backtrace_simple callback function. */
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struct sdata
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{
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uintptr_t *addrs;
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size_t index;
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size_t max;
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int failed;
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};
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/* Passed to backtrace_syminfo callback function. */
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struct symdata
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{
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const char *name;
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uintptr_t val;
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int failed;
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};
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/* The backtrace state. */
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static void *state;
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/* The number of failures. */
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static int failures;
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/* Return the base name in a path. */
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static const char *
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base (const char *p)
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{
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const char *last;
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const char *s;
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last = NULL;
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for (s = p; *s != '\0'; ++s)
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{
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if (IS_DIR_SEPARATOR (*s))
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last = s + 1;
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}
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return last != NULL ? last : p;
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}
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/* Check an entry in a struct info array. */
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static void
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check (const char *name, int index, const struct info *all, int want_lineno,
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const char *want_function, int *failed)
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{
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if (*failed)
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return;
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if (strcmp (base (all[index].filename), "btest.c") != 0)
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{
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fprintf (stderr, "%s: [%d]: got %s expected test.c\n", name, index,
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all[index].filename);
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*failed = 1;
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}
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if (all[index].lineno != want_lineno)
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{
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fprintf (stderr, "%s: [%d]: got %d expected %d\n", name, index,
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all[index].lineno, want_lineno);
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*failed = 1;
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}
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if (strcmp (all[index].function, want_function) != 0)
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{
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fprintf (stderr, "%s: [%d]: got %s expected %s\n", name, index,
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all[index].function, want_function);
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*failed = 1;
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}
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}
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/* The backtrace callback function. */
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static int
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callback_one (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED,
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const char *filename, int lineno, const char *function)
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{
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struct bdata *data = (struct bdata *) vdata;
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struct info *p;
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if (data->index >= data->max)
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{
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fprintf (stderr, "callback_one: callback called too many times\n");
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data->failed = 1;
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return 1;
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}
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p = &data->all[data->index];
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if (filename == NULL)
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p->filename = NULL;
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else
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{
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p->filename = strdup (filename);
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assert (p->filename != NULL);
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}
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p->lineno = lineno;
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if (function == NULL)
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p->function = NULL;
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else
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{
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p->function = strdup (function);
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assert (p->function != NULL);
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}
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++data->index;
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return 0;
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}
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/* An error callback passed to backtrace. */
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static void
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error_callback_one (void *vdata, const char *msg, int errnum)
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{
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struct bdata *data = (struct bdata *) vdata;
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fprintf (stderr, "%s", msg);
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if (errnum > 0)
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fprintf (stderr, ": %s", strerror (errnum));
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fprintf (stderr, "\n");
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data->failed = 1;
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}
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/* The backtrace_simple callback function. */
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static int
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callback_two (void *vdata, uintptr_t pc)
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{
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struct sdata *data = (struct sdata *) vdata;
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if (data->index >= data->max)
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{
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fprintf (stderr, "callback_two: callback called too many times\n");
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data->failed = 1;
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return 1;
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}
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data->addrs[data->index] = pc;
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++data->index;
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return 0;
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}
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/* An error callback passed to backtrace_simple. */
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static void
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error_callback_two (void *vdata, const char *msg, int errnum)
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{
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struct sdata *data = (struct sdata *) vdata;
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fprintf (stderr, "%s", msg);
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if (errnum > 0)
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fprintf (stderr, ": %s", strerror (errnum));
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fprintf (stderr, "\n");
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data->failed = 1;
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}
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/* The backtrace_syminfo callback function. */
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static void
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callback_three (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED,
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const char *symname, uintptr_t symval)
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{
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struct symdata *data = (struct symdata *) vdata;
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if (symname == NULL)
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data->name = NULL;
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else
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{
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data->name = strdup (symname);
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assert (data->name != NULL);
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}
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data->val = symval;
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}
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/* The backtrace_syminfo error callback function. */
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static void
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error_callback_three (void *vdata, const char *msg, int errnum)
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{
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struct symdata *data = (struct symdata *) vdata;
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fprintf (stderr, "%s", msg);
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if (errnum > 0)
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fprintf (stderr, ": %s", strerror (errnum));
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fprintf (stderr, "\n");
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data->failed = 1;
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}
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/* Test the backtrace function with non-inlined functions. */
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static int test1 (void) __attribute__ ((noinline, unused));
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static int f2 (int) __attribute__ ((noinline));
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static int f3 (int, int) __attribute__ ((noinline));
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static int
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test1 (void)
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{
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/* Returning a value here and elsewhere avoids a tailcall which
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would mess up the backtrace. */
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return f2 (__LINE__) + 1;
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}
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static int
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f2 (int f1line)
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{
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return f3 (f1line, __LINE__) + 2;
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}
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static int
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f3 (int f1line, int f2line)
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{
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struct info all[20];
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struct bdata data;
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int f3line;
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int i;
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data.all = &all[0];
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data.index = 0;
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data.max = 20;
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data.failed = 0;
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f3line = __LINE__ + 1;
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i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
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if (i != 0)
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{
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fprintf (stderr, "test1: unexpected return value %d\n", i);
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data.failed = 1;
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}
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check ("test1", 0, all, f3line, "f3", &data.failed);
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check ("test1", 1, all, f2line, "f2", &data.failed);
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check ("test1", 2, all, f1line, "test1", &data.failed);
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printf ("%s: backtrace_full noinline\n", data.failed ? "FAIL" : "PASS");
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if (data.failed)
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++failures;
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return failures;
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}
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/* Test the backtrace function with inlined functions. */
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static inline int test2 (void) __attribute__ ((always_inline, unused));
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static inline int f12 (int) __attribute__ ((always_inline));
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static inline int f13 (int, int) __attribute__ ((always_inline));
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static inline int
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test2 (void)
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{
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return f12 (__LINE__) + 1;
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}
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static inline int
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f12 (int f1line)
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{
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return f13 (f1line, __LINE__) + 2;
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}
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static inline int
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f13 (int f1line, int f2line)
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{
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struct info all[20];
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struct bdata data;
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int f3line;
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int i;
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data.all = &all[0];
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data.index = 0;
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data.max = 20;
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data.failed = 0;
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f3line = __LINE__ + 1;
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i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
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if (i != 0)
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{
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fprintf (stderr, "test2: unexpected return value %d\n", i);
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data.failed = 1;
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}
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check ("test2", 0, all, f3line, "f13", &data.failed);
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check ("test2", 1, all, f2line, "f12", &data.failed);
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check ("test2", 2, all, f1line, "test2", &data.failed);
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printf ("%s: backtrace_full inline\n", data.failed ? "FAIL" : "PASS");
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if (data.failed)
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++failures;
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return failures;
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}
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/* Test the backtrace_simple function with non-inlined functions. */
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static int test3 (void) __attribute__ ((noinline, unused));
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static int f22 (int) __attribute__ ((noinline));
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static int f23 (int, int) __attribute__ ((noinline));
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static int
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test3 (void)
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{
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return f22 (__LINE__) + 1;
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}
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static int
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f22 (int f1line)
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{
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return f23 (f1line, __LINE__) + 2;
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}
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static int
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f23 (int f1line, int f2line)
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{
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uintptr_t addrs[20];
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struct sdata data;
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int f3line;
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int i;
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data.addrs = &addrs[0];
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data.index = 0;
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data.max = 20;
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data.failed = 0;
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f3line = __LINE__ + 1;
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i = backtrace_simple (state, 0, callback_two, error_callback_two, &data);
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if (i != 0)
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{
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fprintf (stderr, "test3: unexpected return value %d\n", i);
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data.failed = 1;
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}
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if (!data.failed)
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{
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struct info all[20];
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struct bdata bdata;
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int j;
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bdata.all = &all[0];
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bdata.index = 0;
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bdata.max = 20;
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bdata.failed = 0;
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for (j = 0; j < 3; ++j)
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{
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i = backtrace_pcinfo (state, addrs[j], callback_one,
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error_callback_one, &bdata);
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if (i != 0)
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{
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fprintf (stderr,
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("test3: unexpected return value "
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"from backtrace_pcinfo %d\n"),
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i);
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bdata.failed = 1;
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}
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if (!bdata.failed && bdata.index != (size_t) (j + 1))
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{
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fprintf (stderr,
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("wrong number of calls from backtrace_pcinfo "
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"got %u expected %d\n"),
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(unsigned int) bdata.index, j + 1);
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bdata.failed = 1;
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}
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}
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check ("test3", 0, all, f3line, "f23", &bdata.failed);
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check ("test3", 1, all, f2line, "f22", &bdata.failed);
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check ("test3", 2, all, f1line, "test3", &bdata.failed);
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if (bdata.failed)
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data.failed = 1;
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for (j = 0; j < 3; ++j)
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{
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struct symdata symdata;
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symdata.name = NULL;
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symdata.val = 0;
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symdata.failed = 0;
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i = backtrace_syminfo (state, addrs[j], callback_three,
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error_callback_three, &symdata);
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if (i == 0)
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{
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fprintf (stderr,
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("test3: [%d]: unexpected return value "
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"from backtrace_syminfo %d\n"),
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j, i);
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symdata.failed = 1;
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}
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if (!symdata.failed)
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{
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const char *expected;
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switch (j)
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{
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case 0:
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expected = "f23";
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break;
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case 1:
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expected = "f22";
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break;
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case 2:
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expected = "test3";
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break;
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default:
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assert (0);
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}
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if (symdata.name == NULL)
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{
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fprintf (stderr, "test3: [%d]: NULL syminfo name\n", j);
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symdata.failed = 1;
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}
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/* Use strncmp, not strcmp, because GCC might create a
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clone. */
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else if (strncmp (symdata.name, expected, strlen (expected))
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!= 0)
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{
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fprintf (stderr,
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("test3: [%d]: unexpected syminfo name "
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"got %s expected %s\n"),
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j, symdata.name, expected);
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symdata.failed = 1;
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}
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}
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if (symdata.failed)
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data.failed = 1;
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}
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}
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printf ("%s: backtrace_simple noinline\n", data.failed ? "FAIL" : "PASS");
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if (data.failed)
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++failures;
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return failures;
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}
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/* Test the backtrace_simple function with inlined functions. */
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static inline int test4 (void) __attribute__ ((always_inline, unused));
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static inline int f32 (int) __attribute__ ((always_inline));
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static inline int f33 (int, int) __attribute__ ((always_inline));
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static inline int
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test4 (void)
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{
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return f32 (__LINE__) + 1;
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}
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static inline int
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f32 (int f1line)
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{
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return f33 (f1line, __LINE__) + 2;
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}
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static inline int
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f33 (int f1line, int f2line)
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{
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uintptr_t addrs[20];
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struct sdata data;
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int f3line;
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int i;
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data.addrs = &addrs[0];
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data.index = 0;
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data.max = 20;
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data.failed = 0;
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f3line = __LINE__ + 1;
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i = backtrace_simple (state, 0, callback_two, error_callback_two, &data);
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if (i != 0)
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{
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fprintf (stderr, "test3: unexpected return value %d\n", i);
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data.failed = 1;
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}
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if (!data.failed)
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{
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struct info all[20];
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struct bdata bdata;
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bdata.all = &all[0];
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bdata.index = 0;
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bdata.max = 20;
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bdata.failed = 0;
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i = backtrace_pcinfo (state, addrs[0], callback_one, error_callback_one,
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&bdata);
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if (i != 0)
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{
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fprintf (stderr,
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("test4: unexpected return value "
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"from backtrace_pcinfo %d\n"),
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i);
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bdata.failed = 1;
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|
}
|
|
|
|
check ("test4", 0, all, f3line, "f33", &bdata.failed);
|
|
check ("test4", 1, all, f2line, "f32", &bdata.failed);
|
|
check ("test4", 2, all, f1line, "test4", &bdata.failed);
|
|
|
|
if (bdata.failed)
|
|
data.failed = 1;
|
|
}
|
|
|
|
printf ("%s: backtrace_simple inline\n", data.failed ? "FAIL" : "PASS");
|
|
|
|
if (data.failed)
|
|
++failures;
|
|
|
|
return failures;
|
|
}
|
|
|
|
int global = 1;
|
|
|
|
static int
|
|
test5 (void)
|
|
{
|
|
struct symdata symdata;
|
|
int i;
|
|
|
|
symdata.name = NULL;
|
|
symdata.val = 0;
|
|
symdata.failed = 0;
|
|
|
|
i = backtrace_syminfo (state, (uintptr_t) &global, callback_three,
|
|
error_callback_three, &symdata);
|
|
if (i == 0)
|
|
{
|
|
fprintf (stderr,
|
|
"test5: unexpected return value from backtrace_syminfo %d\n",
|
|
i);
|
|
symdata.failed = 1;
|
|
}
|
|
|
|
if (!symdata.failed)
|
|
{
|
|
if (symdata.name == NULL)
|
|
{
|
|
fprintf (stderr, "test5: NULL syminfo name\n");
|
|
symdata.failed = 1;
|
|
}
|
|
else if (strcmp (symdata.name, "global") != 0)
|
|
{
|
|
fprintf (stderr,
|
|
"test5: unexpected syminfo name got %s expected %s\n",
|
|
symdata.name, "global");
|
|
symdata.failed = 1;
|
|
}
|
|
}
|
|
|
|
printf ("%s: backtrace_syminfo variable\n",
|
|
symdata.failed ? "FAIL" : "PASS");
|
|
|
|
if (symdata.failed)
|
|
++failures;
|
|
|
|
return failures;
|
|
}
|
|
|
|
static void
|
|
error_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);
|
|
}
|
|
|
|
/* Run all the tests. */
|
|
|
|
int
|
|
main (int argc ATTRIBUTE_UNUSED, char **argv)
|
|
{
|
|
state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
|
|
error_callback_create, NULL);
|
|
|
|
#if BACKTRACE_SUPPORTED
|
|
test1 ();
|
|
test2 ();
|
|
test3 ();
|
|
test4 ();
|
|
test5 ();
|
|
#endif
|
|
|
|
exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
|
|
}
|