Index: clang/trunk/test/Preprocessor/indent_macro.c
===================================================================
--- clang/trunk/test/Preprocessor/indent_macro.c
+++ clang/trunk/test/Preprocessor/indent_macro.c
@@ -1,4 +1,5 @@
-// RUN: %clang_cc1 -E %s | grep '^   zzap$'
+// RUN: %clang_cc1 -E %s | FileCheck %s --match-full-lines --strict-whitespace
+// CHECK:   zzap
 
 // zzap is on a new line, should be indented.
 #define BLAH  zzap
Index: clang/trunk/test/Preprocessor/macro_fn_varargs_named.c
===================================================================
--- clang/trunk/test/Preprocessor/macro_fn_varargs_named.c
+++ clang/trunk/test/Preprocessor/macro_fn_varargs_named.c
@@ -1,6 +1,9 @@
-// RUN: %clang_cc1 -E %s | grep '^a: x$'
-// RUN: %clang_cc1 -E %s | grep '^b: x y, z,h$'
-// RUN: %clang_cc1 -E %s | grep '^c: foo(x)$'
+// RUN: %clang_cc1 -E %s | FileCheck %s --match-full-lines --strict-whitespace --check-prefix 1
+// 1:a: x
+// RUN: %clang_cc1 -E %s | FileCheck %s --match-full-lines --strict-whitespace --check-prefix 2
+// 2:b: x y, z,h
+// RUN: %clang_cc1 -E %s | FileCheck %s --match-full-lines --strict-whitespace --check-prefix 3
+// 3:c: foo(x)
 
 #define A(b, c...) b c
 a: A(x)
Index: clang/trunk/test/Preprocessor/macro_not_define.c
===================================================================
--- clang/trunk/test/Preprocessor/macro_not_define.c
+++ clang/trunk/test/Preprocessor/macro_not_define.c
@@ -1,4 +1,5 @@
-// RUN: %clang_cc1 -E %s | grep '^ # define X 3$'
+// RUN: %clang_cc1 -E %s | FileCheck %s --match-full-lines --strict-whitespace
+// CHECK: # define X 3
 
 #define H # 
  #define D define 
Index: clang/trunk/test/Preprocessor/macro_rparen_scan.c
===================================================================
--- clang/trunk/test/Preprocessor/macro_rparen_scan.c
+++ clang/trunk/test/Preprocessor/macro_rparen_scan.c
@@ -1,4 +1,5 @@
-// RUN: %clang_cc1 -E %s | grep '^3 ;$'
+// RUN: %clang_cc1 -E %s | FileCheck %s --match-full-lines --strict-whitespace
+// CHECK:3 ;
 
 /* Right paren scanning, hard case.  Should expand to 3. */
 #define i(x) 3