c3-lang/libbsd/test/humanize.c

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• Hash : 61b2dbb8
  Author :
  Date : 2013-07-15T01:44:30
  

  Fix dehumanize_number() to correctly detect overflows
  
  Do not allow numbers greated than INT64_MAX and smaller than INT64_MIN.
  Clarify the positive sign value by prefixing it with an explicit +.
  
  Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=66909
  

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• test/humanize.c

• /*
   * Copyright © 2013 Guillem Jover <guillem@hadrons.org>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 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 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  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 OR SERVICES; 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) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <assert.h>
  #include <errno.h>
  #include <stdlib.h>
  
  int
  main(int argc, char **argv)
  {
  	uint64_t uval;
  	int64_t val;
  
  	assert(expand_number("512", &uval) == 0);
  	assert(uval == 512);
  
  	assert(expand_number("512b", &uval) == 0);
  	assert(uval == 512);
  
  	assert(expand_number("10k", &uval) == 0);
  	assert(uval == 10240);
  
  	assert(expand_number("20M", &uval) == 0);
  	assert(uval == 20971520);
  
  	assert(dehumanize_number("512", &val) == 0);
  	assert(val == 512);
  
  	assert(dehumanize_number("512b", &val) == 0);
  	assert(val == 512);
  
  	assert(dehumanize_number("10k", &val) == 0);
  	assert(val == 10240);
  
  	assert(dehumanize_number("20M", &val) == 0);
  	assert(val == 20971520);
  
  	assert(dehumanize_number("-3G", &val) == 0);
  	assert(val == -3221225472LL);
  
  	assert(dehumanize_number("9223372036854775807", &val) == 0);
  	assert(val == INT64_MAX);
  
  	assert(dehumanize_number("9223372036854775808", &val) == -1);
  	assert(errno == ERANGE);
  
  	assert(dehumanize_number("-9223372036854775808", &val) == 0);
  	assert(val == INT64_MIN);
  
  	assert(dehumanize_number("-9223372036854775809", &val) == -1);
  	assert(errno == ERANGE);
  
  	return 0;
  }
  

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