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-rw-r--r--test/Preprocessor/macro_paste_msextensions.c34
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diff --git a/test/Preprocessor/macro_paste_msextensions.c b/test/Preprocessor/macro_paste_msextensions.c
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+// 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))