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author | Florian Weimer <fweimer@redhat.com> | 2023-06-14 18:10:08 +0200 |
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committer | Florian Weimer <fweimer@redhat.com> | 2023-06-14 18:10:08 +0200 |
commit | 454a20c8756c9c1d55419153255fc7692b3d2199 (patch) | |
tree | a65ad84288a247995183089f4400e4fd080ecc9d /debug/tst-fortify.c | |
parent | 7ba426a1115318fc11f4355f3161f35817a06ba4 (diff) | |
download | glibc-454a20c8756c9c1d55419153255fc7692b3d2199.tar.gz glibc-454a20c8756c9c1d55419153255fc7692b3d2199.tar.xz glibc-454a20c8756c9c1d55419153255fc7692b3d2199.zip |
Implement strlcpy and strlcat [BZ #178]
These functions are about to be added to POSIX, under Austin Group issue 986. The fortified strlcat implementation does not raise SIGABRT if the destination buffer does not contain a null terminator, it just inherits the non-failing regular strlcat behavior. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Diffstat (limited to 'debug/tst-fortify.c')
-rw-r--r-- | debug/tst-fortify.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/debug/tst-fortify.c b/debug/tst-fortify.c index 9f962f2a75..0f823a85d0 100644 --- a/debug/tst-fortify.c +++ b/debug/tst-fortify.c @@ -535,6 +535,20 @@ do_test (void) strncpy (a.buf1 + (O + 6), "X", l0 + 4); CHK_FAIL_END + CHK_FAIL_START + strlcpy (a.buf1 + (O + 6), "X", 4); + CHK_FAIL_END + + CHK_FAIL_START + strlcpy (a.buf1 + (O + 6), "X", l0 + 4); + CHK_FAIL_END + + { + char *volatile buf2 = buf; + if (strlcpy (buf2, "a", sizeof (buf) + 1) != 1) + FAIL (); + } + # if !defined __cplusplus || defined __va_arg_pack CHK_FAIL_START sprintf (a.buf1 + (O + 7), "%d", num1); @@ -558,6 +572,23 @@ do_test (void) CHK_FAIL_START strncat (a.buf1, "ZYXWV", l0 + 3); CHK_FAIL_END + + memset (a.buf1, 0, sizeof (a.buf1)); + CHK_FAIL_START + strlcat (a.buf1 + (O + 6), "X", 4); + CHK_FAIL_END + + memset (a.buf1, 0, sizeof (a.buf1)); + CHK_FAIL_START + strlcat (a.buf1 + (O + 6), "X", l0 + 4); + CHK_FAIL_END + + { + buf[0] = '\0'; + char *volatile buf2 = buf; + if (strlcat (buf2, "a", sizeof (buf) + 1) != 1) + FAIL (); + } #endif |