Fix for issue #420.

The frontend only creates a scalar literal instead of an
array literal in order to initialize a vector field. This
commit adds the missing code.

dmd2/mtype.c

@@ -3558,6 +3558,13 @@ Expression *TypeVector::defaultInit(Loc loc)
     return basetype->defaultInit(loc);
 }
 
+#if IN_LLVM
+Expression *TypeVector::defaultInitLiteral(Loc loc)
+{
+    return basetype->defaultInitLiteral(loc);
+}
+#endif
+
 int TypeVector::isZeroInit(Loc loc)
 {
     return basetype->isZeroInit(loc);

dmd2/mtype.h

@@ -482,6 +482,9 @@ struct TypeVector : Type
     int checkBoolean();
     MATCH implicitConvTo(Type *to);
     Expression *defaultInit(Loc loc);
+#if IN_LLVM
+    Expression *defaultInitLiteral(Loc loc);
+#endif
     TypeBasic *elementType();
     int isZeroInit(Loc loc);
     TypeInfoDeclaration *getTypeInfoDeclaration();