When collecting types for built-in candidates, make arrays decay to pointers. Otherwise, subscripting an array leads to no candidates at all. Fixes PR5360.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86140 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/overloaded-operator.cpp b/test/SemaCXX/overloaded-operator.cpp
index 0f723ad..750038d 100644
--- a/test/SemaCXX/overloaded-operator.cpp
+++ b/test/SemaCXX/overloaded-operator.cpp
@@ -268,3 +268,14 @@
   CircA a;
   a->val = 0; // expected-error {{circular pointer delegation detected}}
 }
+
+// PR5360: Arrays should lead to built-in candidates for subscript.
+typedef enum {
+  LastReg = 23,
+} Register;
+class RegAlloc {
+  int getPriority(Register r) {
+    return usepri[r];
+  }
+  int usepri[LastReg + 1];
+};