text: /* Test the "ignore-value" module.
  
     Copyright (C) 2011-2014 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  /* Written by Eric Blake.  */
  
  #include <config.h>
  
  #include "ignore-value.h"
  
  #include <stdio.h>
  
  #ifndef _GL_ATTRIBUTE_RETURN_CHECK
  # if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
  #  define _GL_ATTRIBUTE_RETURN_CHECK
  # else
  #  define _GL_ATTRIBUTE_RETURN_CHECK __attribute__((__warn_unused_result__))
  # endif
  #endif
  
  struct s { int i; };
  static char doChar (void) _GL_ATTRIBUTE_RETURN_CHECK;
  static int doInt (void) _GL_ATTRIBUTE_RETURN_CHECK;
  static off_t doOff (void) _GL_ATTRIBUTE_RETURN_CHECK;
  static void *doPtr (void) _GL_ATTRIBUTE_RETURN_CHECK;
  static struct s doStruct (void) _GL_ATTRIBUTE_RETURN_CHECK;
  
  static char
  doChar (void)
  {
    return 0;
  }
  
  static int
  doInt (void)
  {
    return 0;
  }
  
  static off_t
  doOff (void)
  {
    return 0;
  }
  
  static void *
  doPtr (void)
  {
    return NULL;
  }
  
  static struct s
  doStruct (void)
  {
    static struct s s1;
    return s1;
  }
  
  int
  main (void)
  {
    /* If this test can compile with -Werror and the same warnings as
       the rest of the project, then we are properly silencing warnings
       about ignored return values.  */
    ignore_value (doChar ());
    ignore_value (doInt ());
    ignore_value (doOff ());
    ignore_value (doPtr ());
    ignore_value (doStruct ());
    return 0;
  }
  