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libio/tst-getdelim: Add new test covering NUL as a delimiter

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Add a new test to getdelim to verify that '\0' can be set as a
delimiter.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
This commit is contained in:
Frédéric Bérat 2024-08-13 12:01:26 +02:00
parent 2be0572f3a
commit 3f54e459a6
1 changed files with 21 additions and 1 deletions
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22
libio/tst-getdelim.c
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@ -1,4 +1,6 @@
/* Check that getdelim sets error indicator on error (BZ #29917)
/* Test getdelim conforming to POSIX specifications.
Note: Most getdelim use cases are covered by stdio-common/tst-getline.
Copyright (C) 2023-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -18,18 +20,36 @@
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <support/check.h>
#include <support/support.h>
#include <support/test-driver.h>
static int
do_test (void)
{
/* Check that getdelim sets error indicator on error (BZ #29917) */
clearerr (stdin);
TEST_VERIFY (getdelim (0, 0, '\n', stdin) == -1);
TEST_VERIFY (ferror (stdin) != 0);
TEST_VERIFY (errno == EINVAL);
/* Test getdelim with NUL as delimiter */
verbose_printf ("Testing NUL delimiter\n");
char *lineptr = NULL;
size_t linelen = 0;
char membuf[] = "abc\0d\nef\0";
FILE *memstream = fmemopen (membuf, sizeof (membuf), "r");
TEST_VERIFY_EXIT (memstream != NULL);
TEST_VERIFY (getdelim (&lineptr, &linelen, '\0', memstream) != -1);
TEST_COMPARE_BLOB (lineptr, 4, "abc\0", 4);
TEST_VERIFY (getdelim (&lineptr, &linelen, '\0', memstream) != -1);
TEST_COMPARE_BLOB (lineptr, 5, "d\nef\0", 5);
fclose (memstream);
free (lineptr);
return 0;
}