From 6e8d666e925333c55378e8d5540a8a9ee0eea9c5 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 27 Jul 2016 13:17:41 -0700 Subject: 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 --- scripts/Makefile.ubsan | 4 ---- 1 file changed, 4 deletions(-) (limited to 'scripts') 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 -- cgit v1.2.3