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From: "hewillk at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/99757] New: ICE when parameter pack not expanded with
 static_data_member
Date: Thu, 25 Mar 2021 01:50:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99757

            Bug ID: 99757
           Summary: ICE when parameter pack not expanded with
                    static_data_member
           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: ---

related to PR 99745:

template <typename... Ts>
struct S {
  constexpr static auto x =3D Ts::x;
};

S s;

<source>:3:25: internal compiler error: in cp_finish_decl, at cp/decl.c:7736
    3 |   constexpr static auto x =3D Ts::x;
      |                         ^
0x1cfa799 internal_error(char const*, ...)
        ???:0
0x6ba647 fancy_abort(char const*, int, char const*)
        ???:0
0x7b2e42 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
        ???:0
0x91c9df instantiate_decl(tree_node*, bool, bool)
        ???:0
0x7b31d8 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
        ???:0
0x7c9d03 finish_static_data_member_decl(tree_node*, tree_node*, bool,
tree_node*, int)
        ???:0
0x95a530 instantiate_class_template(tree_node*)
        ???:0
0x7b2bf0 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
        ???:0
0x8e12cd c_parse_file()
        ???:0
0xa5fb72 c_common_parse_file()
        ???:0
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.=