add parsing and constraint enforcement for GNU line marker directives.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63003 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/line-directive.c b/test/Preprocessor/line-directive.c
index e1adc61..3faac15 100644
--- a/test/Preprocessor/line-directive.c
+++ b/test/Preprocessor/line-directive.c
@@ -12,3 +12,16 @@
#define A 42 "foo"
#line A
+# 42
+# 42 "foo"
+# 42 "foo" 1 3
+# 42 "foo" 2 3
+# 42 "foo" 2 3 4
+# 42 "foo" 3 4
+
+# 'a' // expected-error {{invalid preprocessing directive}}
+# 42 'f' // expected-error {{invalid filename for line marker directive}}
+# 42 1 3 // expected-error {{invalid filename for line marker directive}}
+# 42 "foo" 3 1 // expected-error {{invalid flag line marker directive}}
+# 42 "foo" 42 // expected-error {{invalid flag line marker directive}}
+# 42 "foo" 1 2 // expected-error {{invalid flag line marker directive}}