Make sure an invalid concatentaion doesn't insert whitespace before
the RHS. Fixes assembler-with-cpp issue reported on cfe-dev.
llvm-svn: 72370
diff --git a/clang/test/Preprocessor/assembler-with-cpp.c b/clang/test/Preprocessor/assembler-with-cpp.c
index 885e67b..bb16880 100644
--- a/clang/test/Preprocessor/assembler-with-cpp.c
+++ b/clang/test/Preprocessor/assembler-with-cpp.c
@@ -63,4 +63,9 @@
// RUN: grep 'T6 #nostring' %t &&
// RUN: grep 'T7 "foo"' %t &&
+// Concatenation with period doesn't leave a space
+// RUN: grep '.T8' %t &&
+#define T8(A,B) A ## B
+T8(.,T8)
+
// RUN: true