https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110552
Bug ID: 110552
Summary: ICE on valid code in maybe_instantiate_noexcept
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eric.niebler at gmail dot com
Target Milestone: ---
Created attachment 55469
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55469&action=edit
self-contained source file
Compile the attached source with -std=c++20. Result:
/home/eniebler/hello_world.cpp: In substitution of ‘template<class
_EnvProvider> requires tag_invocable<stdexec::__env::get_env_t, const
_EnvProvider&> constexpr
stdexec::__tag_invoke::tag_invoke_result_t<stdexec::__env::get_env_t, const
_EnvProvider&> stdexec::__env::get_env_t::operator()(const _EnvProvider&) const
[with _EnvProvider = stdexec::__basic_sender<<lambda(_Data, _Children
...)>::<lambda(_Cvref, _Fun&&)> >]’:
/home/eniebler/hello_world.cpp:2221:16: required from here
/home/eniebler/hello_world.cpp:1465:59: internal compiler error: in
maybe_instantiate_noexcept, at cp/pt.cc:26753
1465 | requires(_Tag __tag, _Args&&... __args) { tag_invoke((_Tag&&)
__tag, (_Args&&) __args...); };
|
~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0xace10a maybe_instantiate_noexcept(tree_node*, int)
../../gcc/cp/pt.cc:26753
0x96272f mark_used(tree_node*, int)
../../gcc/cp/decl2.cc:5720
0x864a35 build_over_call
../../gcc/cp/call.cc:10394
0x867e0b build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../../gcc/cp/call.cc:5038
0xb304ff finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/cp/semantics.cc:2924
0xacc4e5 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*)
../../gcc/cp/pt.cc:21338
0xabb964 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc/cp/pt.cc:19888
0x8c3193 tsubst_valid_expression_requirement
../../gcc/cp/constraint.cc:2002
0x8cc3c0 tsubst_simple_requirement
../../gcc/cp/constraint.cc:2036
0x8cc3c0 tsubst_requirement
../../gcc/cp/constraint.cc:2233
0x8cc3c0 tsubst_requires_expr
../../gcc/cp/constraint.cc:2363
0x8cc8aa tsubst_requires_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc/cp/constraint.cc:2382
0xac96c7 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*)
../../gcc/cp/pt.cc:21749
0xabb964 tsubst_expr(tree_node*, tree_node*, int, tree_node*)
../../gcc/cp/pt.cc:19888
0x8cde63 satisfy_atom
../../gcc/cp/constraint.cc:3041
0x8cde63 satisfy_constraint_r
../../gcc/cp/constraint.cc:3106
0x8ce723 satisfy_normalized_constraints
../../gcc/cp/constraint.cc:3131
0x8caefd satisfy_declaration_constraints
../../gcc/cp/constraint.cc:3352
0x8caefd constraint_satisfaction_value
../../gcc/cp/constraint.cc:3373
0x8ce78f constraints_satisfied_p(tree_node*, tree_node*)
../../gcc/cp/constraint.cc:3410
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.
See https://godbolt.org/z/1511TYvch for a demo of the bug on compiler explorer.
