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authorLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 13:17:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 13:17:41 -0700
commit6e8d666e925333c55378e8d5540a8a9ee0eea9c5 (patch)
tree68776cc543e97cda5bd003237fd2aa4cad585602 /scripts/Makefile.ubsan
parent468fc7ed5537615efe671d94248446ac24679773 (diff)
downloadlinux-6e8d666e925333c55378e8d5540a8a9ee0eea9c5.tar.bz2
Disable "maybe-uninitialized" warning globally
Several build configurations had already disabled this warning because it generates a lot of false positives. But some had not, and it was still enabled for "allmodconfig" builds, for example. Looking at the warnings produced, every single one I looked at was a false positive, and the warnings are frequent enough (and big enough) that they can easily hide real problems that you don't notice in the noise generated by -Wmaybe-uninitialized. The warning is good in theory, but this is a classic case of a warning that causes more problems than the warning can solve. If gcc gets better at avoiding false positives, we may be able to re-enable this warning. But as is, we're better off without it, and I want to be able to see the *real* warnings. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/Makefile.ubsan')
-rw-r--r--scripts/Makefile.ubsan4
1 files changed, 0 insertions, 4 deletions
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan
index 77ce538268b5..8ab68679cfb5 100644
--- a/scripts/Makefile.ubsan
+++ b/scripts/Makefile.ubsan
@@ -14,8 +14,4 @@ ifdef CONFIG_UBSAN
ifdef CONFIG_UBSAN_ALIGNMENT
CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment)
endif
-
- # -fsanitize=* options makes GCC less smart than usual and
- # increase number of 'maybe-uninitialized false-positives
- CFLAGS_UBSAN += $(call cc-option, -Wno-maybe-uninitialized)
endif