Commit-ID: da541b20021c781f8b65492eeaee824e729599eb Gitweb: https://git.kernel.org/tip/da541b20021c781f8b65492eeaee824e729599eb Author: Josh Poimboeuf <[email protected]> AuthorDate: Wed, 27 Sep 2017 17:34:23 -0500 Committer: Ingo Molnar <[email protected]> CommitDate: Thu, 28 Sep 2017 07:23:02 +0200
objtool: Skip unreachable warnings for GCC 4.4 and older The kbuild bot occasionally reports warnings like: drivers/scsi/pcmcia/aha152x_core.o: warning: objtool: seldo_run()+0x130: unreachable instruction These warnings are always with GCC 4.4. That version of GCC sometimes places unreachable instructions after calls to noreturn functions. The unreachable warnings aren't very important anyway. Just ignore them for old versions of GCC. Reported-by: kbuild test robot <[email protected]> Signed-off-by: Josh Poimboeuf <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/bc89b807d965b98ec18a0bb94f96a594bd58f2f2.1506551639.git.jpoim...@redhat.com Signed-off-by: Ingo Molnar <[email protected]> --- scripts/Makefile.build | 2 ++ 1 file changed, 2 insertions(+) diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 2e3a10e7..061d0c3 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -265,6 +265,8 @@ objtool_args += --no-fp endif ifdef CONFIG_GCOV_KERNEL objtool_args += --no-unreachable +else +objtool_args += $(call cc-ifversion, -lt, 0405, --no-unreachable) endif # 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory
