libio/tst-vtables-interposed.c

   1 /* Test for libio vtables and their validation.  Enabled through interposition.
   2    Copyright (C) 2018-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include "tst-vtables-common.c"
  20
  21 /* Provide an interposed definition of the standard file handles with
  22    our own vtable.  stdout/stdin/stderr will not work as a result, but
  23    a successful test does not print anything, so this is fine.  */
  24 #include "libioP.h"
  25 #undef _IO_file_jumps
  26 #define _IO_file_jumps jumps
  27 #undef _IO_wfile_jumps
  28 extern const struct _IO_jump_t _IO_wfile_jumps;
  29 #define _IO_wfile_jumps _IO_wfile_jumps
  30 #include "stdfiles.c"
  31
  32 static int
  33 do_test (void)
  34 {
  35   return run_tests (false);
  36 }
  37
  38 /* Calling setvbuf in the test driver is not supported with our
  39    interposed file handles.  */
  40 #define TEST_NO_SETVBUF
  41 #include <support/test-driver.c>