https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95728
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
Target Milestone|--- |11.0
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Since the introduction of tsubst_tree_list we now return a naked
error_mark_node rather than an error_mark_node wrapped in a TREE_LIST. So
tsubst_copy_and_build/NEW_EXPR ICEs:
19654 tree placement = RECUR (TREE_OPERAND (t, 0)); // now a naked
error_mark_node
...
19668 for (; placement != NULL_TREE; placement = TREE_CHAIN
(placement)) // crash
A simple
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -19633,6 +19660,8 @@ tsubst_copy_and_build (tree t,
if (placement == NULL_TREE)
placement_vec = NULL;
+ else if (placement == error_mark_node)
+ RETURN (error_mark_node);
else
{
placement_vec = make_tree_vector ();
should fix this.
