DivestOS/Patches/LineageOS-17.1/android_build/0003-Enable_fwrapv.patch

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2021-06-26 15:17:41 -04:00
From 63c497725740bfb6c673456d38f14d8c6030c991 Mon Sep 17 00:00:00 2001
From: Daniel Micay <danielmicay@gmail.com>
Date: Tue, 13 Sep 2016 22:05:56 -0400
Subject: [PATCH] use -fwrapv when signed overflow checking is off
---
core/config_sanitizers.mk | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/core/config_sanitizers.mk b/core/config_sanitizers.mk
index d3adee5ae2..83988bb603 100644
--- a/core/config_sanitizers.mk
+++ b/core/config_sanitizers.mk
@@ -435,3 +435,9 @@ ifneq ($(findstring fsanitize,$(my_cflags)),)
endif
endif
endif
+
+ifeq ($(filter signed-integer-overflow integer undefined,$(my_sanitize)),)
+ ifeq ($(filter -ftrapv,$(my_cflags)),)
+ my_cflags += -fwrapv
+ endif
+endif