1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/cp/call.c b/gcc/cp/call.c
index 0ba0e19..b00334d 100644
--- a/gcc/cp/call.c
+++ b/gcc/cp/call.c
@@ -7291,6 +7291,14 @@ build_temp (tree expr, tree type, int flags,
       && !type_has_nontrivial_copy_init (TREE_TYPE (expr)))
     return get_target_expr_sfinae (expr, complain);
 
+  /* In decltype, we might have decided not to wrap this call in a TARGET_EXPR.
+     But it turns out to be a subexpression, so perform temporary
+     materialization now.  */
+  if (TREE_CODE (expr) == CALL_EXPR
+      && CLASS_TYPE_P (type)
+      && same_type_ignoring_top_level_qualifiers_p (type, TREE_TYPE (expr)))
+    expr = build_cplus_new (type, expr, complain);
+
   savew = warningcount + werrorcount, savee = errorcount;
   releasing_vec args (make_tree_vector_single (expr));
   expr = build_special_member_call (NULL_TREE, complete_ctor_identifier,