linux/lib/test_fortify/write_overflow-strncpy.c

// SPDX-License-Identifier: GPL-2.0-only
#define TEST	\
	strncpy(instance.buf, large_src, sizeof(instance.buf) + 1)

#include "test_fortify.h"
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> 2021-04-21 06:22:52 +00:00			`// SPDX-License-Identifier: GPL-2.0-only`
			`#define TEST \`
			`strncpy(instance.buf, large_src, sizeof(instance.buf) + 1)`

			`#include "test_fortify.h"`