Line data    Source code

       1             : /* Test the "ignore-value" module.
       2             : 
       3             :    Copyright (C) 2011-2020 Free Software Foundation, Inc.
       4             : 
       5             :    This program is free software: you can redistribute it and/or modify
       6             :    it under the terms of the GNU General Public License as published by
       7             :    the Free Software Foundation; either version 3 of the License, or
       8             :    (at your option) any later version.
       9             : 
      10             :    This program is distributed in the hope that it will be useful,
      11             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      12             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13             :    GNU General Public License for more details.
      14             : 
      15             :    You should have received a copy of the GNU General Public License
      16             :    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      17             : 
      18             : /* Written by Eric Blake.  */
      19             : 
      20             : #include <config.h>
      21             : 
      22             : #include "ignore-value.h"
      23             : 
      24             : #include <stdio.h>
      25             : 
      26             : #include "attribute.h"
      27             : 
      28             : struct s { int i; };
      29             : static char doChar (void) NODISCARD;
      30             : static int doInt (void) NODISCARD;
      31             : static off_t doOff (void) NODISCARD;
      32             : static void *doPtr (void) NODISCARD;
      33             : static struct s doStruct (void) NODISCARD;
      34             : 
      35             : static char
      36           1 : doChar (void)
      37             : {
      38           1 :   return 0;
      39             : }
      40             : 
      41             : static int
      42           1 : doInt (void)
      43             : {
      44           1 :   return 0;
      45             : }
      46             : 
      47             : static off_t
      48           1 : doOff (void)
      49             : {
      50           1 :   return 0;
      51             : }
      52             : 
      53             : static void *
      54           1 : doPtr (void)
      55             : {
      56           1 :   return NULL;
      57             : }
      58             : 
      59             : static struct s
      60           1 : doStruct (void)
      61             : {
      62             :   static struct s s1;
      63           1 :   return s1;
      64             : }
      65             : 
      66             : int
      67           1 : main (void)
      68             : {
      69             :   /* If this test can compile with -Werror and the same warnings as
      70             :      the rest of the project, then we are properly silencing warnings
      71             :      about ignored return values.  */
      72           1 :   ignore_value (doChar ());
      73           1 :   ignore_value (doInt ());
      74           1 :   ignore_value (doOff ());
      75           1 :   ignore_value (doPtr ());
      76           1 :   ignore_value (doStruct ());
      77           1 :   return 0;
      78             : }