mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-13 09:54:36 -05:00
50 lines
1.7 KiB
Diff
50 lines
1.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Daniel Micay <danielmicay@gmail.com>
|
|
Date: Wed, 23 Aug 2017 20:28:03 -0400
|
|
Subject: [PATCH] use -fwrapv when signed overflow checking is off
|
|
|
|
---
|
|
cc/cc.go | 2 ++
|
|
cc/sanitize.go | 12 ++++++++++++
|
|
2 files changed, 14 insertions(+)
|
|
|
|
diff --git a/cc/cc.go b/cc/cc.go
|
|
index 31b381a9d..4ca8e847a 100644
|
|
--- a/cc/cc.go
|
|
+++ b/cc/cc.go
|
|
@@ -1478,6 +1478,8 @@ func (c *Module) GenerateAndroidBuildActions(actx android.ModuleContext) {
|
|
}
|
|
if c.sanitize != nil {
|
|
flags = c.sanitize.flags(ctx, flags)
|
|
+ } else {
|
|
+ flags.Local.CFlags = append(flags.Local.CFlags, "-fwrapv")
|
|
}
|
|
if c.coverage != nil {
|
|
flags, deps = c.coverage.flags(ctx, flags, deps)
|
|
diff --git a/cc/sanitize.go b/cc/sanitize.go
|
|
index 463a02ac2..7c92b41dc 100644
|
|
--- a/cc/sanitize.go
|
|
+++ b/cc/sanitize.go
|
|
@@ -458,9 +458,21 @@ func (sanitize *sanitize) flags(ctx ModuleContext, flags Flags) Flags {
|
|
}
|
|
|
|
if !sanitize.Properties.SanitizerEnabled && !sanitize.Properties.UbsanRuntimeDep {
|
|
+ flags.Local.CFlags = append(flags.Local.CFlags, "-fwrapv")
|
|
return flags
|
|
}
|
|
|
|
+ wrapv := true
|
|
+ for _, element := range sanitize.Properties.Sanitizers {
|
|
+ if (element == "signed-integer-overflow" || element == "integer" || element == "undefined") {
|
|
+ wrapv = false
|
|
+ break
|
|
+ }
|
|
+ }
|
|
+ if wrapv {
|
|
+ flags.Local.CFlags = append(flags.Local.CFlags, "-fwrapv")
|
|
+ }
|
|
+
|
|
if Bool(sanitize.Properties.Sanitize.Address) {
|
|
if ctx.Arch().ArchType == android.Arm {
|
|
// Frame pointer based unwinder in ASan requires ARM frame setup.
|