added -fwrapv to CFLAGS to ensure that signed overflows have a well defined behavior

diff --git a/Makefile b/Makefile
index 39bd3ad63cef5c333f46a898cfd0c5f845dc429d..082fc734547dab514b29122cdc63a6c9225ac3c2 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -96,6 +96,7 @@ else
   endif
 endif
 STRIP=$(CROSS_PREFIX)strip
+CFLAGS+=-fwrapv # ensure that signed overflows behave as expected
 ifdef CONFIG_WERROR
 CFLAGS+=-Werror
 endif