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* [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
@ 2021-12-14 7:51 asolokha at gmx dot com
2021-12-14 7:59 ` [Bug c++/103706] " pinskia at gcc dot gnu.org
` (12 more replies)
0 siblings, 13 replies; 14+ messages in thread
From: asolokha at gmx dot com @ 2021-12-14 7:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
Bug ID: 103706
Summary: [11/12 Regression] ICE: tree check: accessed elt 1 of
'tree_vec' with 0 elts in hash, at
cp/constraint.cc:2503
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
g++ 12.0.0 20211212 snapshot (g:0b52083ea2c2dd9897031fdc3802a68fd4aa45ef) ICEs
when compiling the following testcase, extracted from
test/SemaTemplate/concepts.cpp, w/ -std=c++20:
namespace PackInTypeConstraint {
template<typename T, typename U> concept C = sizeof(T) == sizeof(int);
template<typename ...T> void g5() {
([]() -> C<T> auto{
return T();
}(), ...);
}
template void g5<int, int, int>();
}
% g++-12.0.0 -std=c++20 -c gpb6lyci.cpp
gpb6lyci.cpp: In instantiation of 'void PackInTypeConstraint::g5() [with T =
{int, int, int}]':
gpb6lyci.cpp:9:35: required from here
gpb6lyci.cpp:6:15: internal compiler error: tree check: accessed elt 1 of
'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
6 | return T();
| ^
0x869dcd tree_vec_elt_check_failed(int, int, char const*, int, char const*)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/tree.c:8903
0x996fa5 tree_vec_elt_check(tree_node*, int, char const*, int, char const*)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/tree.h:3662
0x996fa5 sat_hasher::hash(sat_entry*)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/constraint.cc:2503
0x992c43 hash_table<sat_hasher, false, xcallocator>::find_slot(sat_entry*
const&, insert_option)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/hash-table.h:435
0x992c43 satisfaction_cache::satisfaction_cache(tree_node*, tree_node*,
sat_info)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/constraint.cc:2597
0x995e2e satisfy_atom
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/constraint.cc:2913
0x995e2e satisfy_constraint_r
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/constraint.cc:3022
0x9966d3 satisfy_normalized_constraints
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/constraint.cc:3047
0x99437f satisfy_nondeclaration_constraints
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/constraint.cc:3137
0x99437f constraint_satisfaction_value
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/constraint.cc:3289
0x996794 constraints_satisfied_p(tree_node*, tree_node*)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/constraint.cc:3321
0xb10490 do_auto_deduction(tree_node*, tree_node*, tree_node*, int,
auto_deduction_context, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/pt.c:30019
0xbbcd18 check_return_expr(tree_node*, bool*)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/typeck.c:10423
0xb64f7f finish_return_stmt(tree_node*)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/semantics.c:1193
0xb2bdd8 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/pt.c:18235
0xb2bd7b tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/pt.c:18582
0xb419e6 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/pt.c:18211
0xb419e6 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/pt.c:19583
0xb17eb2 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/pt.c:21074
0xb1638a tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/var/tmp/portage/sys-devel/gcc-12.0.0_p20211212/work/gcc-12-20211212/gcc/cp/pt.c:20412
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
@ 2021-12-14 7:59 ` pinskia at gcc dot gnu.org
2021-12-14 8:08 ` asolokha at gmx dot com
` (11 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-12-14 7:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2021-12-14
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
template<typename T, typename U> concept C = sizeof(T) == 0;
template<typename T> void g5() {
[]() -> C<T> auto{ return T(); }();
}
template void g5<int>();
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
2021-12-14 7:59 ` [Bug c++/103706] " pinskia at gcc dot gnu.org
@ 2021-12-14 8:08 ` asolokha at gmx dot com
2021-12-14 8:09 ` pinskia at gcc dot gnu.org
` (10 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: asolokha at gmx dot com @ 2021-12-14 8:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
So it's a duplicate of PR99811.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
2021-12-14 7:59 ` [Bug c++/103706] " pinskia at gcc dot gnu.org
2021-12-14 8:08 ` asolokha at gmx dot com
@ 2021-12-14 8:09 ` pinskia at gcc dot gnu.org
2021-12-14 8:09 ` pinskia at gcc dot gnu.org
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-12-14 8:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Arseny Solokha from comment #2)
> So it's a duplicate of PR99811.
it is a dup of bug 103341.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (2 preceding siblings ...)
2021-12-14 8:09 ` pinskia at gcc dot gnu.org
@ 2021-12-14 8:09 ` pinskia at gcc dot gnu.org
2022-01-31 16:28 ` ppalka at gcc dot gnu.org
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-12-14 8:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 103341.
*** This bug has been marked as a duplicate of bug 103341 ***
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (3 preceding siblings ...)
2021-12-14 8:09 ` pinskia at gcc dot gnu.org
@ 2022-01-31 16:28 ` ppalka at gcc dot gnu.org
2022-01-31 16:28 ` ppalka at gcc dot gnu.org
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ppalka at gcc dot gnu.org @ 2022-01-31 16:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ppalka at gcc dot gnu.org
Known to work| |10.3.0
Resolution|DUPLICATE |---
Status|RESOLVED |NEW
Known to fail| |11.2.0, 12.0
--- Comment #5 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Reopening since this PR is concerning constrained lambdas and PR103341 is about
constrained variable templates, and we still ICE on the testcase here even
after r12-6919.
Started with r11-7454.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (4 preceding siblings ...)
2022-01-31 16:28 ` ppalka at gcc dot gnu.org
@ 2022-01-31 16:28 ` ppalka at gcc dot gnu.org
2022-02-08 13:48 ` cvs-commit at gcc dot gnu.org
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ppalka at gcc dot gnu.org @ 2022-01-31 16:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |11.3
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (5 preceding siblings ...)
2022-01-31 16:28 ` ppalka at gcc dot gnu.org
@ 2022-02-08 13:48 ` cvs-commit at gcc dot gnu.org
2022-02-08 13:48 ` cvs-commit at gcc dot gnu.org
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-02-08 13:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Patrick Palka <ppalka@gcc.gnu.org>:
https://gcc.gnu.org/g:34ba3d9a2bf72742b1c150a2dd17d10e3e3f0964
commit r12-7101-g34ba3d9a2bf72742b1c150a2dd17d10e3e3f0964
Author: Patrick Palka <ppalka@redhat.com>
Date: Tue Feb 8 08:46:13 2022 -0500
c++: constrained auto in lambda using outer tparms [PR103706]
Here we're crashing during satisfaction of the lambda's placeholder type
constraints because the constraints depend on the template arguments
from the enclosing scope, which aren't part of the lambda's DECL_TI_ARGS.
This patch fixes this by making do_auto_deduction consider the
"regenerating" template arguments of a lambda for satisfaction,
mirroring what's done in satisfy_declaration_constraints.
PR c++/103706
gcc/cp/ChangeLog:
* constraint.cc (satisfy_declaration_constraints): Use
lambda_regenerating_args instead.
* cp-tree.h (lambda_regenerating_args): Declare.
* pt.cc (lambda_regenerating_args): Define, split out from
satisfy_declaration_constraints.
(do_auto_deduction): Use lambda_regenerating_args to obtain the
full set of outer template arguments for satisfaction when
inside a lambda.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/concepts-lambda18.C: New test.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (6 preceding siblings ...)
2022-02-08 13:48 ` cvs-commit at gcc dot gnu.org
@ 2022-02-08 13:48 ` cvs-commit at gcc dot gnu.org
2022-02-08 13:55 ` [Bug c++/103706] [11 " ppalka at gcc dot gnu.org
` (4 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-02-08 13:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Patrick Palka <ppalka@gcc.gnu.org>:
https://gcc.gnu.org/g:db5f1c17031ad8a898d77121f1e0e0141306e22a
commit r12-7102-gdb5f1c17031ad8a898d77121f1e0e0141306e22a
Author: Patrick Palka <ppalka@redhat.com>
Date: Tue Feb 8 08:46:32 2022 -0500
c++: lambda in pack expansion using pack in constraint [PR103706]
Here when expanding the pack expansion pattern containing a constrained
lambda, the template argument for each Ts is an ARGUMENT_PACK_SELECT,
which we store inside the lambda's LAMBDA_EXPR_REGEN_INFO. Then during
satisfaction of the lambda's constraint C<Ts> the satisfaction cache
uses this argument as part of the key to the corresponding sat_entry, but
iterative_hash_template_arg and template_args_equal deliberately don't
handle ARGUMENT_PACK_SELECT.
Since it's wrong to preserve ARGUMENT_PACK_SELECT inside a hash table
due to its instability (as documented in iterative_hash_template_arg),
this patch helps make sure the satisfaction cache doesn't see such trees
by resolving ARGUMENT_PACK_SELECT arguments before adding them to
LAMBDA_EXPR_REGEN_INFO.
PR c++/103706
gcc/cp/ChangeLog:
* pt.cc (preserve_args): New function.
(tsubst_lambda_expr): Use it when setting LAMBDA_EXPR_REGEN_INFO.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/concepts-lambda19.C: New test.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (7 preceding siblings ...)
2022-02-08 13:48 ` cvs-commit at gcc dot gnu.org
@ 2022-02-08 13:55 ` ppalka at gcc dot gnu.org
2022-02-08 13:55 ` ppalka at gcc dot gnu.org
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ppalka at gcc dot gnu.org @ 2022-02-08 13:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[11/12 Regression] ICE: |[11 Regression] ICE: tree
|tree check: accessed elt 1 |check: accessed elt 1 of
|of 'tree_vec' with 0 elts |'tree_vec' with 0 elts in
|in hash, at |hash, at
|cp/constraint.cc:2503 |cp/constraint.cc:2503
--- Comment #8 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Fixed for GCC 12 so far.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (8 preceding siblings ...)
2022-02-08 13:55 ` [Bug c++/103706] [11 " ppalka at gcc dot gnu.org
@ 2022-02-08 13:55 ` ppalka at gcc dot gnu.org
2022-04-12 23:44 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ppalka at gcc dot gnu.org @ 2022-02-08 13:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ppalka at gcc dot gnu.org
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (9 preceding siblings ...)
2022-02-08 13:55 ` ppalka at gcc dot gnu.org
@ 2022-04-12 23:44 ` cvs-commit at gcc dot gnu.org
2022-04-12 23:44 ` cvs-commit at gcc dot gnu.org
2022-04-12 23:46 ` ppalka at gcc dot gnu.org
12 siblings, 0 replies; 14+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-04-12 23:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Patrick Palka
<ppalka@gcc.gnu.org>:
https://gcc.gnu.org/g:d3950a70da6814206eef1946c289b5652ecc9986
commit r11-9838-gd3950a70da6814206eef1946c289b5652ecc9986
Author: Patrick Palka <ppalka@redhat.com>
Date: Tue Feb 8 08:46:32 2022 -0500
c++: lambda in pack expansion using pack in constraint [PR103706]
Here when expanding the pack expansion pattern containing a constrained
lambda, the template argument for each Ts is an ARGUMENT_PACK_SELECT,
which we store inside the lambda's LAMBDA_EXPR_REGEN_INFO. Then during
satisfaction of the lambda's constraint C<Ts> the satisfaction cache
uses this argument as part of the key to the corresponding sat_entry, but
iterative_hash_template_arg and template_args_equal deliberately don't
handle ARGUMENT_PACK_SELECT.
Since it's wrong to preserve ARGUMENT_PACK_SELECT inside a hash table
due to its instability (as documented in iterative_hash_template_arg),
this patch helps make sure the satisfaction cache doesn't see such trees
by resolving ARGUMENT_PACK_SELECT arguments before adding them to
LAMBDA_EXPR_REGEN_INFO.
PR c++/103706
gcc/cp/ChangeLog:
* pt.c (preserve_args): New function.
(tsubst_lambda_expr): Use it when setting LAMBDA_EXPR_REGEN_INFO.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/concepts-lambda19.C: New test.
(cherry picked from commit db5f1c17031ad8a898d77121f1e0e0141306e22a)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (10 preceding siblings ...)
2022-04-12 23:44 ` cvs-commit at gcc dot gnu.org
@ 2022-04-12 23:44 ` cvs-commit at gcc dot gnu.org
2022-04-12 23:46 ` ppalka at gcc dot gnu.org
12 siblings, 0 replies; 14+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-04-12 23:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Patrick Palka
<ppalka@gcc.gnu.org>:
https://gcc.gnu.org/g:6eb8eb51a827a349cd6acce5f16ffef31d8934b1
commit r11-9842-g6eb8eb51a827a349cd6acce5f16ffef31d8934b1
Author: Patrick Palka <ppalka@redhat.com>
Date: Tue Feb 8 08:46:13 2022 -0500
c++: constrained auto in lambda using outer tparms [PR103706]
Here we're crashing during satisfaction of the lambda's placeholder type
constraints because the constraints depend on the template arguments
from the enclosing scope, which aren't part of the lambda's DECL_TI_ARGS.
This patch fixes this by making do_auto_deduction consider the
"regenerating" template arguments of a lambda for satisfaction,
mirroring what's done in satisfy_declaration_constraints.
PR c++/103706
gcc/cp/ChangeLog:
* constraint.cc (satisfy_declaration_constraints): Use
lambda_regenerating_args instead.
* cp-tree.h (lambda_regenerating_args): Declare.
* pt.c (lambda_regenerating_args): Define, split out from
satisfy_declaration_constraints.
(do_auto_deduction): Use lambda_regenerating_args to obtain the
full set of outer template arguments for satisfaction when
inside a lambda.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/concepts-lambda18.C: New test.
(cherry picked from commit 34ba3d9a2bf72742b1c150a2dd17d10e3e3f0964)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug c++/103706] [11 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503
2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
` (11 preceding siblings ...)
2022-04-12 23:44 ` cvs-commit at gcc dot gnu.org
@ 2022-04-12 23:46 ` ppalka at gcc dot gnu.org
12 siblings, 0 replies; 14+ messages in thread
From: ppalka at gcc dot gnu.org @ 2022-04-12 23:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103706
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #11 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Fixed for GCC 11.3/12.
^ permalink raw reply [flat|nested] 14+ messages in thread
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2021-12-14 7:51 [Bug c++/103706] New: [11/12 Regression] ICE: tree check: accessed elt 1 of 'tree_vec' with 0 elts in hash, at cp/constraint.cc:2503 asolokha at gmx dot com
2021-12-14 7:59 ` [Bug c++/103706] " pinskia at gcc dot gnu.org
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