https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115852
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is the full backtrace (godbolt's backtrace is not decent; maybe because it
is stripped):
<lambda(this Self&&)> auto x(Ts0&& ...) requires requires{<lambda>;} int
main() <lambda(this Self&&)> constexpr<lambda(this Self&&)>::operator decltype
(<lambda(this Self&&)>(static_cast<Self&&>(<anonymous>))) (*)(Self&&)() const
t.cc: In substitution of ‘template<class ... Ts0> auto x(Ts0&& ...) requires
requires{<lambda>;} [with Ts0 = {int}]’:
t.cc:13:13: required from here
13 | return x(1);
| ~^~~
t.cc:5:5: internal compiler error: in satisfy_declaration_constraints, at
cp/constraint.cc:3290
5 | []<class Self>(this Self&&) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
6 |
|
7 | };
| ~
0x272f0cd internal_error(char const*, ...)
/home/apinski/src/upstream-gcc-new/gcc/gcc/diagnostic-global-context.cc:491
0xa475a5 fancy_abort(char const*, int, char const*)
/home/apinski/src/upstream-gcc-new/gcc/gcc/diagnostic.cc:1725
0x770ac3 satisfy_declaration_constraints
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:3290
0x770ac3 constraint_satisfaction_value
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:3408
0xac0ed3 constraints_satisfied_p(tree_node*, tree_node*)
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:3443
0xb3e914 mark_used(tree_node*, int)
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/decl2.cc:5986
0xb3faf2 mark_single_function(tree_node*, int)
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/decl2.cc:5852
0xd1683d cp_build_addr_expr_1
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/typeck.cc:7324
0xb6f595 maybe_add_lambda_conv_op(tree_node*)
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/lambda.cc:1321
0xca3348 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/pt.cc:19897
0xc7f4b1 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/pt.cc:21787
0xab72f8 tsubst_valid_expression_requirement
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:1995
0xabed6e tsubst_simple_requirement
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:2029
0xabed6e tsubst_requirement
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:2244
0xabed6e tsubst_requires_expr
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:2384
0xabf45a tsubst_requires_expr(tree_node*, tree_node*, int, tree_node*)
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:2408
0xc7d953 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/pt.cc:21819
0xac0851 satisfy_atom
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:3074
0xac0851 satisfy_constraint_r
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:3139
0xac0d90 satisfy_normalized_constraints
/home/apinski/src/upstream-gcc-new/gcc/gcc/cp/constraint.cc:3164
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
