kc3-lang/libbsd/test/fpurge.c

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• Hash : fe16f386
  Author :
  Date : 2023-04-10T23:11:33
  

  test: Use open_memstream() only if available
  
  On Solaris this function is not yet available.
  

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• test/fpurge.c

• /*
   * Copyright © 2011 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 <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  static int
  test_memstream(void)
  {
  	int rc = 0;
  #if HAVE_OPEN_MEMSTREAM
  	FILE *fp;
  	char *buf = NULL;
  	size_t bufsz = 0;
  
  	fp = open_memstream(&buf, &bufsz);
  	if (fp == NULL)
  		return 1;
  
  	fputs("World", fp);
  	if (fpurge(fp) < 0)
  		rc = 1;
  	fflush(fp);
  	if (bufsz != 0)
  		rc = 1;
  
  	fclose(fp);
  	free(buf);
  #endif
  
  	return rc;
  }
  
  int
  main(int argc, char *argv[])
  {
  	FILE *fp;
  	int rc;
  
  	if (fpurge(NULL) == 0)
  		return 1;
  
  	fp = fopen("/dev/zero", "r");
  	if (fpurge(fp) < 0)
  		return 1;
  	fclose(fp);
  
  	rc = test_memstream();
  
  	return rc;
  }
  

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