538 lines
14 KiB
C
538 lines
14 KiB
C
/* ztest.c -- Test for libbacktrace inflate code.
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Copyright (C) 2017-2019 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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#include "config.h"
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#include <errno.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 <time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef HAVE_ZLIB
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#include <zlib.h>
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#endif
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#include "backtrace.h"
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#include "backtrace-supported.h"
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#include "internal.h"
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#include "testlib.h"
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#ifndef HAVE_CLOCK_GETTIME
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typedef int xclockid_t;
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static int
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xclock_gettime (xclockid_t id ATTRIBUTE_UNUSED,
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struct timespec *ts ATTRIBUTE_UNUSED)
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{
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errno = EINVAL;
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return -1;
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}
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#define clockid_t xclockid_t
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#define clock_gettime xclock_gettime
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#undef CLOCK_REALTIME
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#define CLOCK_REALTIME 0
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#endif /* !defined(HAVE_CLOCK_GETTIME) */
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#ifdef CLOCK_PROCESS_CPUTIME_ID
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#define ZLIB_CLOCK_GETTIME_ARG CLOCK_PROCESS_CPUTIME_ID
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#else
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#define ZLIB_CLOCK_GETTIME_ARG CLOCK_REALTIME
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#endif
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/* Some tests for the local zlib inflation code. */
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struct zlib_test
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{
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const char *name;
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const char *uncompressed;
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size_t uncompressed_len;
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const char *compressed;
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size_t compressed_len;
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};
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/* Error callback. */
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static void
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error_callback_compress (void *vdata, const char *msg, int errnum)
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{
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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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exit (EXIT_FAILURE);
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}
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static const struct zlib_test tests[] =
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{
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{
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"empty",
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"",
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0,
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"\x78\x9c\x03\x00\x00\x00\x00\x01",
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8,
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},
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{
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"hello",
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"hello, world\n",
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0,
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("\x78\x9c\xca\x48\xcd\xc9\xc9\xd7\x51\x28\xcf"
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"\x2f\xca\x49\xe1\x02\x04\x00\x00\xff\xff\x21\xe7\x04\x93"),
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25,
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},
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{
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"goodbye",
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"goodbye, world",
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0,
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("\x78\x9c\x4b\xcf\xcf\x4f\x49\xaa"
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"\x4c\xd5\x51\x28\xcf\x2f\xca\x49"
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"\x01\x00\x28\xa5\x05\x5e"),
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22,
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},
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{
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"ranges",
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("\xcc\x11\x00\x00\x00\x00\x00\x00\xd5\x13\x00\x00\x00\x00\x00\x00"
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"\x1c\x14\x00\x00\x00\x00\x00\x00\x72\x14\x00\x00\x00\x00\x00\x00"
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"\x9d\x14\x00\x00\x00\x00\x00\x00\xd5\x14\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\xfb\x12\x00\x00\x00\x00\x00\x00\x09\x13\x00\x00\x00\x00\x00\x00"
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"\x0c\x13\x00\x00\x00\x00\x00\x00\xcb\x13\x00\x00\x00\x00\x00\x00"
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"\x29\x14\x00\x00\x00\x00\x00\x00\x4e\x14\x00\x00\x00\x00\x00\x00"
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"\x9d\x14\x00\x00\x00\x00\x00\x00\xd5\x14\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\xfb\x12\x00\x00\x00\x00\x00\x00\x09\x13\x00\x00\x00\x00\x00\x00"
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"\x67\x13\x00\x00\x00\x00\x00\x00\xcb\x13\x00\x00\x00\x00\x00\x00"
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"\x9d\x14\x00\x00\x00\x00\x00\x00\xd5\x14\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\x5f\x0b\x00\x00\x00\x00\x00\x00\x6c\x0b\x00\x00\x00\x00\x00\x00"
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"\x7d\x0b\x00\x00\x00\x00\x00\x00\x7e\x0c\x00\x00\x00\x00\x00\x00"
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"\x38\x0f\x00\x00\x00\x00\x00\x00\x5c\x0f\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\x83\x0c\x00\x00\x00\x00\x00\x00\xfa\x0c\x00\x00\x00\x00\x00\x00"
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"\xfd\x0d\x00\x00\x00\x00\x00\x00\xef\x0e\x00\x00\x00\x00\x00\x00"
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"\x14\x0f\x00\x00\x00\x00\x00\x00\x38\x0f\x00\x00\x00\x00\x00\x00"
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"\x9f\x0f\x00\x00\x00\x00\x00\x00\xac\x0f\x00\x00\x00\x00\x00\x00"
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"\xdb\x0f\x00\x00\x00\x00\x00\x00\xff\x0f\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\xfd\x0d\x00\x00\x00\x00\x00\x00\xd8\x0e\x00\x00\x00\x00\x00\x00"
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"\x9f\x0f\x00\x00\x00\x00\x00\x00\xac\x0f\x00\x00\x00\x00\x00\x00"
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"\xdb\x0f\x00\x00\x00\x00\x00\x00\xff\x0f\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\xfa\x0c\x00\x00\x00\x00\x00\x00\xea\x0d\x00\x00\x00\x00\x00\x00"
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"\xef\x0e\x00\x00\x00\x00\x00\x00\x14\x0f\x00\x00\x00\x00\x00\x00"
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"\x5c\x0f\x00\x00\x00\x00\x00\x00\x9f\x0f\x00\x00\x00\x00\x00\x00"
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"\xac\x0f\x00\x00\x00\x00\x00\x00\xdb\x0f\x00\x00\x00\x00\x00\x00"
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"\xff\x0f\x00\x00\x00\x00\x00\x00\x2c\x10\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\x60\x11\x00\x00\x00\x00\x00\x00\xd1\x16\x00\x00\x00\x00\x00\x00"
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"\x40\x0b\x00\x00\x00\x00\x00\x00\x2c\x10\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\x7a\x00\x00\x00\x00\x00\x00\x00\xb6\x00\x00\x00\x00\x00\x00\x00"
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"\x9f\x01\x00\x00\x00\x00\x00\x00\xa7\x01\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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"\x7a\x00\x00\x00\x00\x00\x00\x00\xa9\x00\x00\x00\x00\x00\x00\x00"
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"\x9f\x01\x00\x00\x00\x00\x00\x00\xa7\x01\x00\x00\x00\x00\x00\x00"
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"),
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672,
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("\x78\x9c\x3b\x23\xc8\x00\x06\x57\x85\x21\xb4\x8c\x08\x84\x2e\x82"
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"\xd2\x73\xa1\xf4\x55\x28\x8d\x0e\x7e\x0b\x41\x68\x4e\xa8\x7e\x1e"
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"\x28\x7d\x1a\x4a\x6b\x42\xf5\xf9\x91\x69\x5e\x3a\x9a\x79\x84\xf4"
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"\xc7\x73\x43\xe8\x1c\x28\x5d\x0b\xa5\xeb\x78\x20\xb4\x05\x3f\x84"
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"\x8e\xe1\xc7\xae\xbf\x19\xaa\xee\x17\x94\xfe\xcb\x0b\xa1\xdf\xf3"
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"\x41\x68\x11\x7e\x54\x73\xe6\x43\xe9\x35\x50\xfa\x36\x94\xfe\x8f"
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"\xc3\x7c\x98\x79\x37\xf8\xc8\xd3\x0f\x73\xd7\x2b\x1c\xee\x8a\x21"
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"\xd2\x5d\x3a\x02\xd8\xcd\x4f\x80\xa6\x87\x8b\x62\x10\xda\x81\x1b"
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"\xbf\xfa\x2a\x28\xbd\x0d\x4a\xcf\x67\x84\xd0\xcb\x19\xf1\xab\x5f"
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"\x49\xa4\x7a\x00\x48\x97\x29\xd4"),
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152,
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}
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};
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/* Test the hand coded samples. */
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static void
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test_samples (struct backtrace_state *state)
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{
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size_t i;
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for (i = 0; i < sizeof tests / sizeof tests[0]; ++i)
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{
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char *p;
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size_t v;
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size_t j;
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unsigned char *uncompressed;
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size_t uncompressed_len;
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p = malloc (12 + tests[i].compressed_len);
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memcpy (p, "ZLIB", 4);
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v = tests[i].uncompressed_len;
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if (v == 0)
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v = strlen (tests[i].uncompressed);
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for (j = 0; j < 8; ++j)
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p[j + 4] = (v >> ((7 - j) * 8)) & 0xff;
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memcpy (p + 12, tests[i].compressed, tests[i].compressed_len);
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uncompressed = NULL;
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uncompressed_len = 0;
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if (!backtrace_uncompress_zdebug (state, (unsigned char *) p,
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tests[i].compressed_len + 12,
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error_callback_compress, NULL,
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&uncompressed, &uncompressed_len))
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{
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fprintf (stderr, "test %s: uncompress failed\n", tests[i].name);
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++failures;
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}
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else
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{
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if (uncompressed_len != v)
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{
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fprintf (stderr,
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"test %s: got uncompressed length %zu, want %zu\n",
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tests[i].name, uncompressed_len, v);
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++failures;
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}
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else if (memcmp (tests[i].uncompressed, uncompressed, v) != 0)
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{
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size_t j;
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fprintf (stderr, "test %s: uncompressed data mismatch\n",
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tests[i].name);
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for (j = 0; j < v; ++j)
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if (tests[i].uncompressed[j] != uncompressed[j])
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fprintf (stderr, " %zu: got %#x want %#x\n", j,
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uncompressed[j], tests[i].uncompressed[j]);
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++failures;
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}
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else
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printf ("PASS: inflate %s\n", tests[i].name);
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backtrace_free (state, uncompressed, uncompressed_len,
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error_callback_compress, NULL);
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}
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}
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}
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#ifdef HAVE_ZLIB
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/* Given a set of TRIALS timings, discard the lowest and highest
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values and return the mean average of the rest. */
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static size_t
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average_time (const size_t *times, size_t trials)
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{
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size_t imax;
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size_t max;
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size_t imin;
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size_t min;
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size_t i;
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size_t sum;
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imin = 0;
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imax = 0;
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min = times[0];
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max = times[0];
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for (i = 1; i < trials; ++i)
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{
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if (times[i] < min)
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{
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imin = i;
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min = times[i];
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}
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if (times[i] > max)
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{
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imax = i;
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max = times[i];
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}
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}
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sum = 0;
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for (i = 0; i < trials; ++i)
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{
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if (i != imax && i != imin)
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sum += times[i];
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}
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return sum / (trials - 2);
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}
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#endif
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/* Test a larger text, if available. */
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static void
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test_large (struct backtrace_state *state)
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{
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#ifdef HAVE_ZLIB
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unsigned char *orig_buf;
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size_t orig_bufsize;
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size_t i;
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char *compressed_buf;
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size_t compressed_bufsize;
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unsigned long compress_sizearg;
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unsigned char *uncompressed_buf;
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size_t uncompressed_bufsize;
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int r;
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clockid_t cid;
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struct timespec ts1;
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struct timespec ts2;
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size_t ctime;
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size_t ztime;
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const size_t trials = 16;
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size_t ctimes[16];
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size_t ztimes[16];
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static const char * const names[] = {
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"Mark.Twain-Tom.Sawyer.txt",
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"../libgo/go/compress/testdata/Mark.Twain-Tom.Sawyer.txt"
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};
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orig_buf = NULL;
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orig_bufsize = 0;
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uncompressed_buf = NULL;
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compressed_buf = NULL;
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for (i = 0; i < sizeof names / sizeof names[0]; ++i)
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{
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size_t len;
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char *namebuf;
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FILE *e;
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struct stat st;
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char *rbuf;
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size_t got;
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len = strlen (SRCDIR) + strlen (names[i]) + 2;
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namebuf = malloc (len);
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if (namebuf == NULL)
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{
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perror ("malloc");
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goto fail;
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}
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snprintf (namebuf, len, "%s/%s", SRCDIR, names[i]);
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e = fopen (namebuf, "r");
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free (namebuf);
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if (e == NULL)
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continue;
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if (fstat (fileno (e), &st) < 0)
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{
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perror ("fstat");
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fclose (e);
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continue;
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}
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rbuf = malloc (st.st_size);
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if (rbuf == NULL)
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{
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perror ("malloc");
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goto fail;
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}
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got = fread (rbuf, 1, st.st_size, e);
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fclose (e);
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if (got > 0)
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{
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orig_buf = rbuf;
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orig_bufsize = got;
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break;
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}
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free (rbuf);
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}
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if (orig_buf == NULL)
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{
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/* We couldn't find an input file. */
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printf ("UNSUPPORTED: inflate large\n");
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return;
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}
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compressed_bufsize = compressBound (orig_bufsize) + 12;
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compressed_buf = malloc (compressed_bufsize);
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if (compressed_buf == NULL)
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{
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perror ("malloc");
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goto fail;
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}
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compress_sizearg = compressed_bufsize - 12;
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r = compress (compressed_buf + 12, &compress_sizearg,
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orig_buf, orig_bufsize);
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if (r != Z_OK)
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{
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fprintf (stderr, "zlib compress failed: %d\n", r);
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goto fail;
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}
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compressed_bufsize = compress_sizearg + 12;
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/* Prepare the header that our library expects. */
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memcpy (compressed_buf, "ZLIB", 4);
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for (i = 0; i < 8; ++i)
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compressed_buf[i + 4] = (orig_bufsize >> ((7 - i) * 8)) & 0xff;
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uncompressed_buf = malloc (orig_bufsize);
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if (uncompressed_buf == NULL)
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{
|
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perror ("malloc");
|
|
goto fail;
|
|
}
|
|
uncompressed_bufsize = orig_bufsize;
|
|
|
|
if (!backtrace_uncompress_zdebug (state, compressed_buf, compressed_bufsize,
|
|
error_callback_compress, NULL,
|
|
&uncompressed_buf, &uncompressed_bufsize))
|
|
{
|
|
fprintf (stderr, "inflate large: backtrace_uncompress_zdebug failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (uncompressed_bufsize != orig_bufsize)
|
|
{
|
|
fprintf (stderr,
|
|
"inflate large: got uncompressed length %zu, want %zu\n",
|
|
uncompressed_bufsize, orig_bufsize);
|
|
goto fail;
|
|
}
|
|
|
|
if (memcmp (uncompressed_buf, orig_buf, uncompressed_bufsize) != 0)
|
|
{
|
|
fprintf (stderr, "inflate large: uncompressed data mismatch\n");
|
|
goto fail;
|
|
}
|
|
|
|
printf ("PASS: inflate large\n");
|
|
|
|
for (i = 0; i < trials; ++i)
|
|
{
|
|
unsigned long uncompress_sizearg;
|
|
|
|
cid = ZLIB_CLOCK_GETTIME_ARG;
|
|
if (clock_gettime (cid, &ts1) < 0)
|
|
{
|
|
if (errno == EINVAL)
|
|
return;
|
|
perror ("clock_gettime");
|
|
return;
|
|
}
|
|
|
|
if (!backtrace_uncompress_zdebug (state, compressed_buf,
|
|
compressed_bufsize,
|
|
error_callback_compress, NULL,
|
|
&uncompressed_buf,
|
|
&uncompressed_bufsize))
|
|
{
|
|
fprintf (stderr,
|
|
("inflate large: "
|
|
"benchmark backtrace_uncompress_zdebug failed\n"));
|
|
return;
|
|
}
|
|
|
|
if (clock_gettime (cid, &ts2) < 0)
|
|
{
|
|
perror ("clock_gettime");
|
|
return;
|
|
}
|
|
|
|
ctime = (ts2.tv_sec - ts1.tv_sec) * 1000000000;
|
|
ctime += ts2.tv_nsec - ts1.tv_nsec;
|
|
ctimes[i] = ctime;
|
|
|
|
if (clock_gettime (cid, &ts1) < 0)
|
|
{
|
|
perror("clock_gettime");
|
|
return;
|
|
}
|
|
|
|
uncompress_sizearg = uncompressed_bufsize;
|
|
r = uncompress (uncompressed_buf, &uncompress_sizearg,
|
|
compressed_buf + 12, compressed_bufsize - 12);
|
|
|
|
if (clock_gettime (cid, &ts2) < 0)
|
|
{
|
|
perror ("clock_gettime");
|
|
return;
|
|
}
|
|
|
|
if (r != Z_OK)
|
|
{
|
|
fprintf (stderr,
|
|
"inflate large: benchmark zlib uncompress failed: %d\n",
|
|
r);
|
|
return;
|
|
}
|
|
|
|
ztime = (ts2.tv_sec - ts1.tv_sec) * 1000000000;
|
|
ztime += ts2.tv_nsec - ts1.tv_nsec;
|
|
ztimes[i] = ztime;
|
|
}
|
|
|
|
/* Toss the highest and lowest times and average the rest. */
|
|
ctime = average_time (ctimes, trials);
|
|
ztime = average_time (ztimes, trials);
|
|
|
|
printf ("backtrace: %zu ns\n", ctime);
|
|
printf ("zlib : %zu ns\n", ztime);
|
|
printf ("ratio : %g\n", (double) ztime / (double) ctime);
|
|
|
|
return;
|
|
|
|
fail:
|
|
printf ("FAIL: inflate large\n");
|
|
++failures;
|
|
|
|
if (orig_buf != NULL)
|
|
free (orig_buf);
|
|
if (compressed_buf != NULL)
|
|
free (compressed_buf);
|
|
if (uncompressed_buf != NULL)
|
|
free (uncompressed_buf);
|
|
|
|
#else /* !HAVE_ZLIB */
|
|
|
|
printf ("UNSUPPORTED: inflate large\n");
|
|
|
|
#endif /* !HAVE_ZLIB */
|
|
}
|
|
|
|
int
|
|
main (int argc ATTRIBUTE_UNUSED, char **argv)
|
|
{
|
|
struct backtrace_state *state;
|
|
|
|
state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
|
|
error_callback_create, NULL);
|
|
|
|
test_samples (state);
|
|
test_large (state);
|
|
|
|
exit (failures != 0 ? EXIT_FAILURE : EXIT_SUCCESS);
|
|
}
|