Fix the rest of PR2279:
a) correct rejection of ',' in pp expressions.
b) the precedence of ',' was wrong w.r.t. ?:.
Thanks again to Neil for finding these and providing testcases.
llvm-svn: 50625
diff --git a/clang/test/Preprocessor/expr_comma.c b/clang/test/Preprocessor/expr_comma.c
new file mode 100644
index 0000000..5507272
--- /dev/null
+++ b/clang/test/Preprocessor/expr_comma.c
@@ -0,0 +1,10 @@
+// Comma is not allowed in C89
+// RUN: not clang -E %s -std=c89 -pedantic-errors
+
+// Comma is allowed if unevaluated in C99
+// RUN: clang -E %s -std=c99 -pedantic-errors
+
+// PR2279
+
+#if 0? 1,2:3
+#endif