1 files changed, 34 insertions, 0 deletions
diff --git a/clang/test/Preprocessor/macro_paste_msextensions.c b/clang/test/Preprocessor/macro_paste_msextensions.c
new file mode 100644
index 0000000..c5b4213
--- /dev/null
+++ b/clang/test/Preprocessor/macro_paste_msextensions.c
@@ -0,0 +1,34 @@
+// RUN: %clang_cc1 -P -E -fms-extensions %s | FileCheck -strict-whitespace %s
+
+// This horrible stuff should preprocess into (other than whitespace):
+//   int foo;
+//   int bar;
+//   int baz;
+
+int foo;
+
+// CHECK: int foo;
+
+#define comment /##/  dead tokens live here
+comment This is stupidity
+
+int bar;
+
+// CHECK: int bar;
+
+#define nested(x) int x comment cute little dead tokens...
+
+nested(baz)  rise of the dead tokens
+
+;
+
+// CHECK: int baz
+// CHECK: ;
+
+
+// rdar://8197149 - VC++ allows invalid token pastes: (##baz
+#define foo(x) abc(x)
+#define bar(y) foo(##baz(y))
+bar(q)
+
+// CHECK: abc(baz(q))