Disable source fortification on Darwin with AddressSanitizer.
ASan doesn't play well with -D_FORTIFY_SOURCE, which is enabled by default starting at OS X 10.7
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164299 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 3720d47..d5cb514 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -92,6 +92,9 @@
Builder.defineMacro("__APPLE__");
Builder.defineMacro("__MACH__");
Builder.defineMacro("OBJC_NEW_PROPERTIES");
+ // AddressSanitizer doesn't play well with source fortification, which is on
+ // by default on Darwin.
+ if (Opts.AddressSanitizer) Builder.defineMacro("_FORTIFY_SOURCE", "0");
if (!Opts.ObjCAutoRefCount) {
// __weak is always defined, for use in blocks and with objc pointers.