libio/tst-wmemstream5.c

   1 /* Copyright (C) 2021-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <wchar.h>
  19
  20 extern int fclose (FILE*);
  21
  22 #if defined __GNUC__ && __GNUC__ >= 11
  23 /* Verify that calling fclose on the result of open_wmemstream doesn't
  24    trigger GCC -Wmismatched-dealloc with fclose forward-declared and
  25    without <stdio.h> included in the same translation unit.  */
  26 #pragma GCC diagnostic push
  27 #pragma GCC diagnostic error "-Wmismatched-dealloc"
  28 #endif
  29
  30 static int
  31 do_test (void)
  32 {
  33   {
  34     wchar_t *buf;
  35     size_t size;
  36     FILE *f = open_wmemstream (&buf, &size);
  37     fclose (f);
  38   }
  39
  40   {
  41     FILE* (*pf)(wchar_t**, size_t*) = open_wmemstream;
  42     wchar_t *buf;
  43     size_t size;
  44     FILE *f = pf (&buf, &size);
  45     fclose (f);
  46   }
  47
  48   return 0;
  49 }
  50
  51 #if defined __GNUC__ && __GNUC__ >= 11
  52 /* Restore -Wmismatched-dealloc setting.  */
  53 # pragma GCC diagnostic pop
  54 #endif
  55
  56 #define TEST_FUNCTION do_test ()
  57 #include "../test-skeleton.c"