Author: eugenis
Date: Thu Jun 20 05:49:46 2013
New Revision: 184410
URL: http://llvm.org/viewvc/llvm-project?rev=184410&view=rev
Log:
Add -fno-assume-sane-operator-new when building with MSan.
A workaroudn for PR16386. MSan's operator new aften has side-effects that are
miscompiled without this flag.
Modified:
cfe/trunk/lib/Driver/SanitizerArgs.h
cfe/trunk/test/Driver/fsanitize.c
Modified: cfe/trunk/lib/Driver/SanitizerArgs.h
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/SanitizerArgs.h?rev=184410&r1=184409&r2=184410&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/SanitizerArgs.h (original)
+++ cfe/trunk/lib/Driver/SanitizerArgs.h Thu Jun 20 05:49:46 2013
@@ -94,8 +94,12 @@ class SanitizerArgs {
CmdArgs.push_back(Args.MakeArgString("-fsanitize-memory-track-origins"));
if (AsanZeroBaseShadow)
- CmdArgs.push_back(Args.MakeArgString(
- "-fsanitize-address-zero-base-shadow"));
+ CmdArgs.push_back(
+ Args.MakeArgString("-fsanitize-address-zero-base-shadow"));
+
+ // Workaround for PR16386.
+ if (needsMsanRt())
+ CmdArgs.push_back(Args.MakeArgString("-fno-assume-sane-operator-new"));
}
private:
Modified: cfe/trunk/test/Driver/fsanitize.c
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/fsanitize.c?rev=184410&r1=184409&r2=184410&view=diff
==============================================================================
--- cfe/trunk/test/Driver/fsanitize.c (original)
+++ cfe/trunk/test/Driver/fsanitize.c Thu Jun 20 05:49:46 2013
@@ -139,3 +139,6 @@
// RUN: %clang -target x86_64-linux-gnu -fsanitize=address,leak
-fno-sanitize=address %s -### 2>&1 | FileCheck %s
--check-prefix=CHECK-SANA-SANL-NO-SANA
// CHECK-SANA-SANL-NO-SANA: "-fsanitize=leak"
+
+// RUN: %clang -target x86_64-linux-gnu -fsanitize=memory %s -### 2>&1 |
FileCheck %s --check-prefix=CHECK-MSAN
+// CHECK-MSAN: "-fno-assume-sane-operator-new"
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