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From: "hewillk at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/100031] New: ICE: in dependent_type_p, at cp/pt.c:26757
Date: Sun, 11 Apr 2021 12:25:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100031

            Bug ID: 100031
           Summary: ICE: in dependent_type_p, at cp/pt.c:26757
           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 100006, PR 100030.

https://godbolt.org/z/TxGMsEv6W

template <class... Ts>
auto f(Ts...) {
  []() requires (sizeof(Ts) =3D=3D 0) {};
}

int main() {
  f(0);
}

<source>:3:18: internal compiler error: in dependent_type_p, at cp/pt.c:267=
57
    3 |   []() requires (sizeof(Ts) =3D=3D 0) {};
      |                  ^~~~~~~~~~
0x1d00ea9 internal_error(char const*, ...)
        ???:0
0x6bb009 fancy_abort(char const*, int, char const*)
        ???:0
0x8fa4d8 dependent_type_p(tree_node*)
        ???:0
0x9c561f cxx_sizeof_or_alignof_type(unsigned int, tree_node*, tree_code, bo=
ol,
bool)
        ???:0
0x73fdba constraints_satisfied_p(tree_node*, tree_node*)
        ???:0
0x804780 maybe_add_lambda_conv_op(tree_node*)
        ???:0
0x94addd tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
        ???:0
0x91d71f instantiate_decl(tree_node*, bool, bool)
        ???:0
0x7c7a1e maybe_instantiate_decl(tree_node*)
        ???:0
0x7c9180 mark_used(tree_node*, int)
        ???:0
0x6de877 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
        ???:0
0x981e5c finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, b=
ool,
bool, int)
        ???:0
0x8e223d c_parse_file()
        ???:0
0xa614e2 c_common_parse_file()
        ???:0
Please submit a full bug report,
with preprocessed source if appropriate.=