| /* fmemopen tests for BZ#1930 and BZ#20005. |
| Copyright (C) 2016-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <assert.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/types.h> |
| |
| |
| /* Check if fflush does not reset the file position. */ |
| static int |
| do_test (void) |
| { |
| char buffer[500] = "x"; |
| |
| FILE *stream = fmemopen (buffer, sizeof (buffer), "r+"); |
| if (stream == NULL) |
| { |
| printf ("error: fmemopen could not open stream\n"); |
| return 1; |
| } |
| |
| const char test[] = "test"; |
| |
| size_t r = fwrite (test, sizeof (char), sizeof (test), stream); |
| if (r != sizeof (test)) |
| { |
| printf ("error: fwrite returned %zu, expected %zu\n", r, sizeof(test)); |
| return 1; |
| } |
| |
| r = ftell (stream); |
| if (r != sizeof (test)) |
| { |
| printf ("error: ftell return %zu, expected %zu\n", r, sizeof(test)); |
| return 1; |
| } |
| |
| if (fflush (stream) != 0) |
| { |
| printf ("error: fflush failed\n"); |
| return 1; |
| } |
| |
| r = ftell (stream); |
| if (r != sizeof (test)) |
| { |
| printf ("error: ftell return %zu, expected %zu\n", r, sizeof(test)); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| #define TEST_FUNCTION do_test () |
| #include "../test-skeleton.c" |