From acb42b59194b50b557d9f3203b878af0f9ff510e Mon Sep 17 00:00:00 2001
From: Kostya Serebryany <kcc@google.com>
Date: Mon, 12 Dec 2011 18:01:46 +0000
Subject: [PATCH] [asan] use .preinit_array only on linux

llvm-svn: 146379
---
 llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
index fdea1b59466e..f16bdf530c52 100644
--- a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -567,7 +567,6 @@ bool AddressSanitizer::insertGlobalRedzones(Module &M) {
 
 // .preinit_array is something that hapens before all other inits.
 // On systems where .preinit_array is honored, we will call __asan_init early.
-// On other systems this will make no effect.
 void AddressSanitizer::appendToPreinitArray(Module &M, Function *F) {
   IRBuilder<> IRB(M.getContext());
   GlobalVariable *Var =
@@ -647,7 +646,9 @@ bool AddressSanitizer::runOnModule(Module &M) {
   }
 
   appendToGlobalCtors(M, AsanCtorFunction, 1 /*high priority*/);
-  appendToPreinitArray(M, AsanInitFunction);
+
+  if (M.getTargetTriple().find("linux") != std::string::npos)
+    appendToPreinitArray(M, AsanInitFunction);
 
   return Res;
 }