comment

Author: ArrayBolt3

Makefile

@@ -47,7 +47,9 @@ endif
 #endif
 
 # IMPORTANT: Do NOT remove -ftrapv from the list of flags, it is used to allow
-# signed integer arithmetic without explicit overflow checks.
+# signed integer arithmetic without explicit overflow checks. Also make sure
+# that -ftrapv ALWAYS comes after -fno-strict-overflow, as
+# -fno-strict-overflow implies -fwrapv, and -ftrapv must override -fwrapv.
 FORTIFY_CFLAGS := -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 \
 	-fstack-clash-protection -fstack-protector-all \
 	-fno-delete-null-pointer-checks -fno-strict-overflow -fno-strict-aliasing \