tree 6549bca068e68ab17685fc640aa249af76d48f0e
parent 76ae847497bc5207c479de5e2ac487270008b19b
author Nick Desaulniers <ndesaulniers@google.com> 1631317239 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1631553508 -0700

compiler.h: drop fallback overflow checkers

Once upgrading the minimum supported version of GCC to 5.1, we can drop
the fallback code for !COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW.

This is effectively a revert of commit f0907827a8a9 ("compiler.h: enable
builtin overflow checkers and add fallback code")

Link: https://github.com/ClangBuiltLinux/linux/issues/1438#issuecomment-916745801
Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>