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| author | Roy Eldar <royeldar0@gmail.com> | 2023-05-25 17:41:59 +0300 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2023-05-25 18:51:23 +0200 |
| commit | d2b1af43057c2bde5b180868a67d2b2bc2de95b7 (patch) | |
| tree | 183f86a2bf99bbdbc0ac81f70669452a9ebc381e /elf | |
| parent | dae801527386f94e9d2fabf23c37863d1b599153 (diff) | |
| download | glibc-d2b1af43057c2bde5b180868a67d2b2bc2de95b7.zip glibc-d2b1af43057c2bde5b180868a67d2b2bc2de95b7.tar.gz glibc-d2b1af43057c2bde5b180868a67d2b2bc2de95b7.tar.bz2 | |
elf: add test for dl-printf
This patch checks _dl_debug_vdprintf, by passing various inputs to
_dl_dprintf and comparing the output with invocations of snprintf.
Signed-off-by: Roy Eldar <royeldar0@gmail.com>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/Makefile | 1 | ||||
| -rw-r--r-- | elf/tst-dl-printf-static.c | 78 |
2 files changed, 79 insertions, 0 deletions
diff --git a/elf/Makefile b/elf/Makefile index 8640138..7430453 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -275,6 +275,7 @@ tests-static-normal := \ tests-static-internal := \ tst-dl_find_object-static \ + tst-dl-printf-static \ tst-ptrguard1-static \ tst-stackguard1-static \ tst-tls1-static \ diff --git a/elf/tst-dl-printf-static.c b/elf/tst-dl-printf-static.c new file mode 100644 index 0000000..da89c44 --- /dev/null +++ b/elf/tst-dl-printf-static.c @@ -0,0 +1,78 @@ +/* Check _dl_debug_vdprintf. + Copyright The GNU Toolchain Authors. + 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 + <https://www.gnu.org/licenses/>. */ + +#include <ldsodefs.h> +#include <limits.h> +#include <stdarg.h> +#include <stdio.h> +#include <support/check.h> +#include <support/xunistd.h> + +#define BUFSZ 64 + +#define TEST(fmt, ...) \ + do \ + { \ + char str1[BUFSZ], str2[BUFSZ]; \ + int len1 = snprintf (str1, BUFSZ, fmt, __VA_ARGS__); \ + TEST_VERIFY_EXIT (len1 >= 0); \ + TEST_VERIFY_EXIT (len1 < BUFSZ); \ + _dl_dprintf (fds[1], fmt, __VA_ARGS__); \ + ssize_t len2 = read (fds[0], str2, BUFSZ); \ + TEST_VERIFY_EXIT (len2 >= 0); \ + TEST_VERIFY_EXIT (len2 < BUFSZ); \ + str2[len2] = '\0'; \ + TEST_COMPARE_STRING (str1, str2); \ + } \ + while (0) + +static int +do_test (void) +{ + int fds[2]; + xpipe (fds); + TEST ("%d", 0); + TEST ("%d", 1); + TEST ("%d", INT_MAX); + TEST ("%d", -1); + TEST ("%d", INT_MIN + 1); + TEST ("%d", INT_MIN); + TEST ("%u", 0U); + TEST ("%u", 1U); + TEST ("%u", UINT_MAX); + TEST ("%x", 0); + TEST ("%x", 1); + TEST ("%x", UINT_MAX); + TEST ("%ld", 0L); + TEST ("%ld", 1L); + TEST ("%ld", LONG_MAX); + TEST ("%ld", -1L); + TEST ("%ld", LONG_MIN + 1); + TEST ("%ld", LONG_MIN); + TEST ("%lu", 0UL); + TEST ("%lu", 1UL); + TEST ("%lu", ULONG_MAX); + TEST ("%lx", 0UL); + TEST ("%lx", 1UL); + TEST ("%lx", ULONG_MAX); + xclose (fds[0]); + xclose (fds[1]); + return 0; +} + +#include <support/test-driver.c> |