From bfdb9b2ec68f3f9997724bd6c3bb593576ee8f16 Mon Sep 17 00:00:00 2001
From: Evgeniy Stepanov <eugeni.stepanov@gmail.com>
Date: Mon, 11 Nov 2013 09:27:20 +0000
Subject: [PATCH] [msan] Sanity check for non-PIE.

llvm-svn: 194370
---
 compiler-rt/lib/msan/msan_linux.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/compiler-rt/lib/msan/msan_linux.cc b/compiler-rt/lib/msan/msan_linux.cc
index ff5fc735bf16..46f501e488c5 100644
--- a/compiler-rt/lib/msan/msan_linux.cc
+++ b/compiler-rt/lib/msan/msan_linux.cc
@@ -45,6 +45,12 @@ static const uptr kOriginsBeg = kBad2Beg;
 static const uptr kOriginsEnd = kBad2End;
 
 bool InitShadow(bool prot1, bool prot2, bool map_shadow, bool init_origins) {
+  if ((uptr) & InitShadow < kMemBeg) {
+    Printf("FATAL: Code below application range: %p < %p. Non-PIE build?\n",
+           &InitShadow, (void *)kMemBeg);
+    return false;
+  }
+
   if (common_flags()->verbosity) {
     Printf("__msan_init %p\n", &__msan_init);
     Printf("Memory   : %p %p\n", kMemBeg, kMemEnd);