Index: compiler-rt/trunk/test/asan/TestCases/sleep_before_dying.c
===================================================================
--- compiler-rt/trunk/test/asan/TestCases/sleep_before_dying.c
+++ compiler-rt/trunk/test/asan/TestCases/sleep_before_dying.c
@@ -1,5 +1,5 @@
 // RUN: %clang_asan -O2 %s -o %t
-// RUN: env ASAN_OPTIONS="sleep_before_dying=1" not %run %t 2>&1 | FileCheck %s
+// RUN: env ASAN_OPTIONS="$ASAN_OPTIONS:sleep_before_dying=1" not %run %t 2>&1 | FileCheck %s
 
 #include <stdlib.h>
 int main() {
Index: compiler-rt/trunk/test/asan/TestCases/strcspn-1.c
===================================================================
--- compiler-rt/trunk/test/asan/TestCases/strcspn-1.c
+++ compiler-rt/trunk/test/asan/TestCases/strcspn-1.c
@@ -1,5 +1,5 @@
 // Test string s1 overflow in strcspn function
-// RUN: %clang_asan %s -o %t && ASAN_OPTIONS=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_asan %s -o %t && env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t 2>&1 | FileCheck %s
 
 // Test intercept_strspn asan option
 // RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:intercept_strspn=false %run %t 2>&1
Index: compiler-rt/trunk/test/asan/TestCases/strcspn-2.c
===================================================================
--- compiler-rt/trunk/test/asan/TestCases/strcspn-2.c
+++ compiler-rt/trunk/test/asan/TestCases/strcspn-2.c
@@ -1,5 +1,5 @@
 // Test stopset overflow in strcspn function
-// RUN: %clang_asan %s -o %t && ASAN_OPTIONS=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_asan %s -o %t && env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t 2>&1 | FileCheck %s
 
 // Test intercept_strcspn asan option
 // RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:intercept_strspn=false %run %t 2>&1
Index: compiler-rt/trunk/test/asan/TestCases/strpbrk-1.c
===================================================================
--- compiler-rt/trunk/test/asan/TestCases/strpbrk-1.c
+++ compiler-rt/trunk/test/asan/TestCases/strpbrk-1.c
@@ -1,5 +1,5 @@
 // Test string s1 overflow in strpbrk function
-// RUN: %clang_asan %s -o %t && ASAN_OPTIONS=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_asan %s -o %t && env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t 2>&1 | FileCheck %s
 
 // Test intercept_strpbrk asan option
 // RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:intercept_strpbrk=false %run %t 2>&1
Index: compiler-rt/trunk/test/asan/TestCases/strpbrk-2.c
===================================================================
--- compiler-rt/trunk/test/asan/TestCases/strpbrk-2.c
+++ compiler-rt/trunk/test/asan/TestCases/strpbrk-2.c
@@ -1,5 +1,5 @@
 // Test stopset overflow in strpbrk function
-// RUN: %clang_asan %s -o %t && ASAN_OPTIONS=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_asan %s -o %t && env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t 2>&1 | FileCheck %s
 
 // Test intercept_strpbrk asan option
 // RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:intercept_strpbrk=false %run %t 2>&1
Index: compiler-rt/trunk/test/asan/TestCases/strspn-1.c
===================================================================
--- compiler-rt/trunk/test/asan/TestCases/strspn-1.c
+++ compiler-rt/trunk/test/asan/TestCases/strspn-1.c
@@ -1,5 +1,5 @@
 // Test string s1 overflow in strspn function
-// RUN: %clang_asan %s -o %t && ASAN_OPTIONS=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_asan %s -o %t && env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t 2>&1 | FileCheck %s
 
 // Test intercept_strspn asan option
 // RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:intercept_strspn=false %run %t 2>&1
Index: compiler-rt/trunk/test/asan/TestCases/strspn-2.c
===================================================================
--- compiler-rt/trunk/test/asan/TestCases/strspn-2.c
+++ compiler-rt/trunk/test/asan/TestCases/strspn-2.c
@@ -1,5 +1,5 @@
 // Test stopset overflow in strspn function
-// RUN: %clang_asan %s -o %t && ASAN_OPTIONS=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_asan %s -o %t && env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t 2>&1 | FileCheck %s
 
 // Test intercept_strspn asan option
 // RUN: env ASAN_OPTIONS=$ASAN_OPTIONS:intercept_strspn=false %run %t 2>&1
Index: compiler-rt/trunk/test/asan/TestCases/strstr-1.c
===================================================================
--- compiler-rt/trunk/test/asan/TestCases/strstr-1.c
+++ compiler-rt/trunk/test/asan/TestCases/strstr-1.c
@@ -1,5 +1,5 @@
 // Test haystack overflow in strstr function
-// RUN: %clang_asan %s -o %t && ASAN_OPTIONS=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_asan %s -o %t && env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t 2>&1 | FileCheck %s
 
 // Test intercept_strstr asan option
 // Disable other interceptors because strlen may be called inside strstr
Index: compiler-rt/trunk/test/asan/TestCases/strstr-2.c
===================================================================
--- compiler-rt/trunk/test/asan/TestCases/strstr-2.c
+++ compiler-rt/trunk/test/asan/TestCases/strstr-2.c
@@ -1,5 +1,5 @@
 // Test needle overflow in strstr function
-// RUN: %clang_asan %s -o %t && ASAN_OPTIONS=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
+// RUN: %clang_asan %s -o %t && env ASAN_OPTIONS=$ASAN_OPTIONS:strict_string_checks=true not %run %t 2>&1 | FileCheck %s
 
 // Test intercept_strstr asan option
 // Disable other interceptors because strlen may be called inside strstr