1 files changed, 33 insertions, 0 deletions
diff --git a/clang/test/Preprocessor/output_paste_avoid.c b/clang/test/Preprocessor/output_paste_avoid.c
new file mode 100644
index 0000000..8e4f3a4
--- /dev/null
+++ b/clang/test/Preprocessor/output_paste_avoid.c
@@ -0,0 +1,33 @@
+// RUN: %clang_cc1 -E %s -o - | FileCheck -strict-whitespace %s
+
+
+#define y(a) ..a
+A: y(.)
+// This should print as ".. ." to avoid turning into ...
+// CHECK: A: .. .
+
+#define X 0 .. 1
+B: X
+// CHECK: B: 0 .. 1
+
+#define DOT .
+C: ..DOT
+// CHECK: C: .. .
+
+
+#define PLUS +
+#define EMPTY
+#define f(x) =x=
+D: +PLUS -EMPTY- PLUS+ f(=)
+// CHECK: D: + + - - + + = = =
+
+
+#define test(x) L#x
+E: test(str)
+// Should expand to L "str" not L"str"
+// CHECK: E: L "str"
+
+// Should avoid producing >>=.
+#define equal =
+F: >>equal
+// CHECK: F: >> =