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authorKees Cook <keescook@chromium.org>2020-04-06 20:10:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-07 10:43:43 -0700
commit9cf016e6b49b53d6c15d4137c034178148149ef4 (patch)
treec5c273b273083738e8941b83cbf217f3e6a8a0a3 /lib/Makefile
parent6e85318521c001b6af82830774a8a7d05eec6adf (diff)
downloadlinux-9cf016e6b49b53d6c15d4137c034178148149ef4.tar.bz2
lib: test_stackinit.c: XFAIL switch variable init tests
The tests for initializing a variable defined between a switch statement's test and its first "case" statement are currently not initialized in Clang[1] nor the proposed auto-initialization feature in GCC. We should retain the test (so that we can evaluate compiler fixes), but mark it as an "expected fail". The rest of the kernel source will be adjusted to avoid this corner case. Also disable -Wswitch-unreachable for the test so that the intentionally broken code won't trigger warnings for GCC (nor future Clang) when initialization happens this unhandled place. [1] https://bugs.llvm.org/show_bug.cgi?id=44916 Suggested-by: Alexander Potapenko <glider@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Jann Horn <jannh@google.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Link: http://lkml.kernel.org/r/202002191358.2897A07C6@keescook Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/Makefile')
-rw-r--r--lib/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Makefile b/lib/Makefile
index 0fd125c4ad07..93d05ff4f501 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -87,6 +87,7 @@ obj-$(CONFIG_TEST_KMOD) += test_kmod.o
obj-$(CONFIG_TEST_DEBUG_VIRTUAL) += test_debug_virtual.o
obj-$(CONFIG_TEST_MEMCAT_P) += test_memcat_p.o
obj-$(CONFIG_TEST_OBJAGG) += test_objagg.o
+CFLAGS_test_stackinit.o += $(call cc-disable-warning, switch-unreachable)
obj-$(CONFIG_TEST_STACKINIT) += test_stackinit.o
obj-$(CONFIG_TEST_BLACKHOLE_DEV) += test_blackhole_dev.o
obj-$(CONFIG_TEST_MEMINIT) += test_meminit.o