https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106980
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
Last reconfirmed|2022-09-20 00:00:00 |2025-2-14
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Still crashes:
106980.C: In substitution of ‘template<long unsigned int N, class ... Fns>
requires N >= 1 && ((requires(‘type_pack_expansion’ not supported by
simple_type_specifier... fn‘type_pack_expansion’ not supported by
direct_abstract_declarator) {{fn.operator()<size_t(N) - 1>()} -> decltype(auto)
[requires std::same_as<<placeholder>, void>];} && ...)) void unroll(Fns ...)
[with long unsigned int N = 3; Fns = {main()::<lambda()>, main()::<lambda()>,
main()::<lambda()>}]’:
106980.C:23:14: required from here
23 | unroll<3>(
| ~~~~~~~~~^
24 | []<size_t I>() { cout << "hello " << I << endl; },
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
25 | []<size_t I>() { cout << "this " << I << endl; },
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 | []<size_t I>() { cout << "world " << I << endl; } );
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
106980.C:10:122: internal compiler error: Segmentation fault
10 | requires (N >= 1) && (requires( Fns ... fn ) { { fn.template
operator ()<(size_t)N - 1>() } -> std::same_as<void>; } && ...)
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
0x302f187 internal_error(char const*, ...)
/home/mpolacek/src/gcc/gcc/diagnostic-global-context.cc:517
0x11c39a4 crash_signal
/home/mpolacek/src/gcc/gcc/toplev.cc:322
0x7fcf54f4804f ???
/usr/src/debug/glibc-2.40-21.fc41.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
0x444afc hash_table<hash_map<tree_node*, tree_node*,
simple_hashmap_traits<default_hash_traits<tree_node*>, tree_node*>
>::hash_entry, false, xcallocator>::find_slot_with_hash(tree_node* const&,
unsigned int, insert_option)
/home/mpolacek/src/gcc/gcc/hash-table.h:1039
0x4436dc hash_map<tree_node*, tree_node*,
simple_hashmap_traits<default_hash_traits<tree_node*>, tree_node*>
>::put(tree_node* const&, tree_node* const&)
/home/mpolacek/src/gcc/gcc/hash-map.h:170
0x75f1c6 register_local_specialization(tree_node*, tree_node*)
/home/mpolacek/src/gcc/gcc/cp/pt.cc:2012
0x792481 gen_elem_of_pack_expansion_instantiation
/home/mpolacek/src/gcc/gcc/cp/pt.cc:13286
0x795cae tsubst_pack_expansion(tree_node*, tree_node*, int, tree_node*)
/home/mpolacek/src/gcc/gcc/cp/pt.cc:14039
0x792c5f tsubst_fold_expr_pack
/home/mpolacek/src/gcc/gcc/cp/pt.cc:13404
0x793203 tsubst_unary_right_fold
/home/mpolacek/src/gcc/gcc/cp/pt.cc:13520
0x7c85d7 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
/home/mpolacek/src/gcc/gcc/cp/pt.cc:22217
0x4bf52c satisfy_atom
/home/mpolacek/src/gcc/gcc/cp/constraint.cc:2430
0x4bf942 satisfy_constraint_r
/home/mpolacek/src/gcc/gcc/cp/constraint.cc:2495
0x4be477 satisfy_conjunction
/home/mpolacek/src/gcc/gcc/cp/constraint.cc:2194
0x4bf8d8 satisfy_constraint_r
/home/mpolacek/src/gcc/gcc/cp/constraint.cc:2491
0x4bf9f3 satisfy_normalized_constraints
/home/mpolacek/src/gcc/gcc/cp/constraint.cc:2520
0x4c097d satisfy_declaration_constraints
/home/mpolacek/src/gcc/gcc/cp/constraint.cc:2740
0x4c09ff constraint_satisfaction_value
/home/mpolacek/src/gcc/gcc/cp/constraint.cc:2761
0x4c0bc9 constraints_satisfied_p(tree_node*, tree_node*)
/home/mpolacek/src/gcc/gcc/cp/constraint.cc:2798
0x7cceb7 fn_type_unification(tree_node*, tree_node*, tree_node*, tree_node*
const*, unsigned int, tree_node*, unification_kind_t, int, conversion**, bool,
bool)
/home/mpolacek/src/gcc/gcc/cp/pt.cc:23211
