DivestOS/Patches/LineageOS-15.1/android_build/0002-Enable_fwrapv.patch

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2021-06-26 15:17:41 -04:00
From f699532069f985837f61c43cd7697869890672ea 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 70cb456a5..705bcb1ef 100644
--- a/core/config_sanitizers.mk
+++ b/core/config_sanitizers.mk
@@ -308,3 +308,9 @@ ifneq ($(my_sanitize_diag),)
my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)UBSAN_RUNTIME_LIBRARY)
endif
endif
+
+ifeq ($(filter signed-integer-overflow integer undefined,$(my_sanitize)),)
+ ifeq ($(filter -ftrapv,$(my_cflags)),)
+ my_cflags += -fwrapv
+ endif
+endif
--
2.31.1