Properly escape filenames in line directives.
Fixes PR17018. Only partial test coverage because I don't want
to try to write a test which generates a file whose name contains a newline.
llvm-svn: 189557
diff --git a/clang/test/Preprocessor/line-directive-output.c b/clang/test/Preprocessor/line-directive-output.c
index bd3ea94..5c0aef8b 100644
--- a/clang/test/Preprocessor/line-directive-output.c
+++ b/clang/test/Preprocessor/line-directive-output.c
@@ -73,3 +73,6 @@
# 42 "A.c"
# 44 "A.c"
# 49 "A.c"
+
+// CHECK: # 50 "a\n.c"
+# 50 "a\012.c"
