Handle demotion of coerced arguments (as in void a(x) short x; { ... }).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63726 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Coverage/c-language-features.inc b/test/Coverage/c-language-features.inc
index 9a52e56..8b56e6a 100644
--- a/test/Coverage/c-language-features.inc
+++ b/test/Coverage/c-language-features.inc
@@ -144,3 +144,14 @@
   const char *s1 = __FUNCTION__;
   const char *s2 = __PRETTY_FUNCTION__;
 }
+
+// Arg mismatch with passed type.
+void f7(x) 
+     float x;
+{
+}
+
+void f8(x) 
+     short x;
+{
+}