fix test

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@53802 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/dumptokens_phyloc.c b/test/Preprocessor/dumptokens_phyloc.c
index 45081ec..812b2b2 100644
--- a/test/Preprocessor/dumptokens_phyloc.c
+++ b/test/Preprocessor/dumptokens_phyloc.c
@@ -1,4 +1,4 @@
-// RUN: clang -dumptokens %s 2>&1 | grep "PhysLoc=[_.a-zA-Z]*:3:20"
+// RUN: clang -dumptokens %s 2>&1 | grep "PhysLoc=[_.a-zA-Z/\\]*:3:20"
 
 #define TESTPHYLOC 10