autogen.sh: CFLAGS: Add -Werror=overflow

This helped find a bug, and doesn't seem to have any false positives
here, so let's use it.

Signed-off-by: Alejandro Colomar <alx@kernel.org>

diff --git a/autogen.sh b/autogen.sh
index c7bced6d9cf7aea07bfc91ed63f5c664a2991d6c..cd7b3dd63863a1fb5fedf4da36f9a392a7d3b902 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -10,6 +10,7 @@ CFLAGS="$CFLAGS -Werror=implicit-function-declaration"
 CFLAGS="$CFLAGS -Werror=implicit-int"
 CFLAGS="$CFLAGS -Werror=incompatible-pointer-types"
 CFLAGS="$CFLAGS -Werror=int-conversion"
+CFLAGS="$CFLAGS -Werror=overflow"
 CFLAGS="$CFLAGS -Werror=sizeof-pointer-div"
 CFLAGS="$CFLAGS -Werror=unused-but-set-parameter"
 CFLAGS="$CFLAGS -Werror=unused-function"