https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99904
Bug ID: 99904
Summary: ICE: in tsubst_pack_expansion, at cp/pt.c:13056
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hewillk at gmail dot com
Target Milestone: ---
maybe dup of PR 99595.
https://godbolt.org/z/zarsP11Y6
template <class> concept C = true;
template <class> struct A {};
template <template <C...> class>
struct S {};
constexpr S<A> s;
<source>:5:14: internal compiler error: in tsubst_pack_expansion, at
cp/pt.c:13056
5 | constexpr S<A> s;
| ^
0x1cfcc99 internal_error(char const*, ...)
???:0
0x6baa77 fancy_abort(char const*, int, char const*)
???:0
0x9305c7 tsubst_pack_expansion(tree_node*, tree_node*, int, tree_node*)
???:0
0x739b56 tsubst_constraint(tree_node*, tree_node*, int, tree_node*)
???:0
0x739cd1 tsubst_constraint_info(tree_node*, tree_node*, int, tree_node*)
???:0
0x929233 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
???:0
0x97fa1d finish_template_type(tree_node*, tree_node*, int)
???:0
0x8e14fd c_parse_file()
???:0
0xa601f2 c_common_parse_file()
???:0
Please submit a full bug report,
with preprocessed source if appropriate.
