Migrate tests to -verify


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173582 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Lexer/unknown-char.c b/test/Lexer/unknown-char.c
index 57f7904..8d316b3 100644
--- a/test/Lexer/unknown-char.c
+++ b/test/Lexer/unknown-char.c
@@ -1,2 +1,4 @@
-// RUN: %clang_cc1 -E %s 2>&1 | grep -v '^#' | not grep error
+// RUN: %clang_cc1 -E -verify %s
+// expected-no-diagnostics
+
  ` ` ` `