Re: [PATCH v18 0/9] Compile-time stack metadata validation

[Ingo Molnar <mingo@kernel.org>]

FYI, I got this build failure on allmodconfig-x86-64:

  objtool.c:134:1: error: control reaches end of non-void function [-Werror=return-type]

that was with:

  gcc version 4.8.3 20140911 (Red Hat 4.8.3-7) (GCC) 

GCC 5.2.1 does not trigger this warning, which is I suspect why you have not seen 
this in your own testing.

I applied the fix below: all paths that generate a nonzero error do an explicit 
exit(), so return 0 is fine here.

Thanks,

	Ingo

=====================>

 tools/objtool/objtool.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/objtool/objtool.c b/tools/objtool/objtool.c
index 4e53d272c0c3..46c326db4f46 100644
--- a/tools/objtool/objtool.c
+++ b/tools/objtool/objtool.c
@@ -131,4 +131,6 @@ int main(int argc, const char **argv)
 		cmd_usage();
 
 	handle_internal_command(argc, argv);
+
+	return 0;
 }