Fix assertion failure in self-host (and probably bogus template instantiation
too). When instantiating a direct-initializer, if we find it has zero
arguments, produce an empty ParenListExpr rather than returning a null
expression.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170490 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaTemplate/instantiate-member-initializers.cpp b/test/SemaTemplate/instantiate-member-initializers.cpp
index 45503b3..297ae91 100644
--- a/test/SemaTemplate/instantiate-member-initializers.cpp
+++ b/test/SemaTemplate/instantiate-member-initializers.cpp
@@ -25,3 +25,13 @@
   BB() : AA<T>(1) {}
 };
 BB<int> x;
+
+struct X {
+  X();
+};
+template<typename T>
+struct Y {
+  Y() : x() {}
+  X x;
+};
+Y<int> y;