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Disallow optimizations which potentially remove boundary checks

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for signed values due to a compiler authors considering integer
overflow as impossible.

The change follows suit of other projects taking the same measure.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2013-12-06 21:44:13 +00:00
parent 16a93df7eb
commit 1efe86bb37
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=259045
1 changed files with 6 additions and 0 deletions
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6
sys/conf/kern.mk
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@ -147,6 +147,12 @@ INLINE_LIMIT?= 8000
#
CFLAGS+= -ffreestanding
#
# Do not allow a compiler to optimize out overflow checks for signed
# types.
#
CFLAGS+= -fno-strict-overflow
#
# GCC SSP support
#