linux/lib/test_fortify/write_overflow-strlcpy.c
Kees Cook be58f71037 fortify: Add compile-time FORTIFY_SOURCE tests
While the run-time testing of FORTIFY_SOURCE is already present in
LKDTM, there is no testing of the expected compile-time detections. In
preparation for correctly supporting FORTIFY_SOURCE under Clang, adding
additional FORTIFY_SOURCE defenses, and making sure FORTIFY_SOURCE
doesn't silently regress with GCC, introduce a build-time test suite that
checks each expected compile-time failure condition.

As this is relatively backwards from standard build rules in the
sense that a successful test is actually a compile _failure_, create
a wrapper script to check for the correct errors, and wire it up as
a dummy dependency to lib/string.o, collecting the results into a log
file artifact.

Signed-off-by: Kees Cook <keescook@chromium.org>
2021-10-18 12:28:52 -07:00

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C

// SPDX-License-Identifier: GPL-2.0-only
#define TEST \
strlcpy(instance.buf, large_src, sizeof(instance.buf) + 1)
#include "test_fortify.h"