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Diffstat (limited to 'libio/tst-bz24051.c')
-rw-r--r-- | libio/tst-bz24051.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/libio/tst-bz24051.c b/libio/tst-bz24051.c new file mode 100644 index 0000000..cf0dc80 --- /dev/null +++ b/libio/tst-bz24051.c @@ -0,0 +1,81 @@ +/* Test that assigning to stdout redirects puts, putchar, etc (BZ#24051) + Copyright (C) 2019 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/>. */ + + +/* Prevent putchar -> _IO_putc inline expansion. */ +#define __NO_INLINE__ +#pragma GCC optimize("O0") + +#include <stdio.h> +#include <string.h> +#include <wchar.h> + +#include <array_length.h> +#include <support/check.h> +#include <support/temp_file.h> +#include <support/test-driver.h> + +#undef putchar +#undef putwchar + +static int +do_test_narrow (void) +{ + char buf[100]; + int fd = create_temp_file ("tst-bz24051", NULL); + stdout = fdopen (fd, "w+"); + TEST_VERIFY_EXIT (stdout != NULL); + + printf ("ab%s", "cd"); + putchar ('e'); + putchar_unlocked ('f'); + puts ("ghi"); + + rewind (stdout); + TEST_VERIFY_EXIT (fgets (buf, sizeof (buf), stdout) != NULL); + TEST_VERIFY (strcmp (buf, "abcdefghi\n") == 0); + + return 0; +} + +static int +do_test_wide (void) +{ + wchar_t buf[100]; + int fd = create_temp_file ("tst-bz24051w", NULL); + stdout = fdopen (fd, "w+"); + TEST_VERIFY_EXIT (stdout != NULL); + + wprintf (L"ab%ls", L"cd"); + putwchar (L'e'); + putwchar_unlocked (L'f'); + + rewind (stdout); + TEST_VERIFY_EXIT (fgetws (buf, array_length (buf), stdout) != NULL); + TEST_VERIFY (wcscmp (buf, L"abcdef") == 0); + + return 0; +} + +static int +do_test (void) +{ + return do_test_narrow () + do_test_wide (); +} + +#include <support/test-driver.c> |