fix a nasty bug that Neil identifier in pp-expr parsing (this is PR2279 part D).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50617 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/expr_liveness.c b/test/Preprocessor/expr_liveness.c
index f14ac0a..61c0732 100644
--- a/test/Preprocessor/expr_liveness.c
+++ b/test/Preprocessor/expr_liveness.c
@@ -20,6 +20,13 @@
 #if 0 ? 124/0 : 42
 #endif
 
+// PR2279
+#if 0 ? 1/0: 2
+#else
+#error
+#endif
+
+
 #else