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* [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
@ 2023-09-21 21:53 bugreport0 at proton dot me
2023-09-21 22:00 ` [Bug c++/111529] [11/12/13/14 Regression] " pinskia at gcc dot gnu.org
` (9 more replies)
0 siblings, 10 replies; 11+ messages in thread
From: bugreport0 at proton dot me @ 2023-09-21 21:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
Bug ID: 111529
Summary: ICE on bool conversion in an unrolled loop condition
inside template lambda nested in another template
scope
Product: gcc
Version: 13.2.0
URL: https://godbolt.org/z/q64oM6bre
Status: UNCONFIRMED
Keywords: c++-lambda, ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: bugreport0 at proton dot me
Target Milestone: ---
template <int x>
void f() {
[](auto c) {
#pragma GCC unroll 9
for (int i = c; i; --i) {
}
};
}
int main() {
f<0>();
}
compiles with -std=c++14 but with -std=c++17 generates
<source>: In instantiation of 'void f() [with int x = 0]':
<source>:11:7: required from here
<source>:5:19: internal compiler error: unexpected expression '(bool)i' of kind
implicit_conv_expr
5 | for (int i = c; i; --i) {
| ^
0x1ce7bde internal_error(char const*, ...)
???:0
0x8f1d4c finish_for_cond(tree_node*, tree_node*, bool, unsigned short)
???:0
0x8d0054 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
???:0
0x8beb17 instantiate_decl(tree_node*, bool, bool)
???:0
0x8d993b instantiate_pending_templates(int)
???:0
0x7d9f35 c_parse_final_cleanups()
???:0
0x98c608 c_common_parse_file()
???:0
Making any explicit conversion on the counter inside the condition breaks
compilation with -std=c++14 too.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13/14 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
@ 2023-09-21 22:00 ` pinskia at gcc dot gnu.org
2023-09-21 22:09 ` bugreport0 at proton dot me
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-09-21 22:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to fail| |11.1.0
Known to work| |10.1.0
Last reconfirmed| |2023-09-21
Ever confirmed|0 |1
Target Milestone|--- |11.5
Summary|ICE on bool conversion in |[11/12/13/14 Regression]
|an unrolled loop condition |ICE on bool conversion in
|inside template lambda |an unrolled loop condition
|nested in another template |inside template lambda
|scope |nested in another template
| |scope
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Slightly more reduced:
```
template <int>
void f() {
[]<int>() {
#pragma GCC unroll 9
for (int i = 1; i; --i) {
}
};
}
int main() {
f<0>();
}
```
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13/14 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
2023-09-21 22:00 ` [Bug c++/111529] [11/12/13/14 Regression] " pinskia at gcc dot gnu.org
@ 2023-09-21 22:09 ` bugreport0 at proton dot me
2023-09-21 22:12 ` pinskia at gcc dot gnu.org
` (7 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: bugreport0 at proton dot me @ 2023-09-21 22:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
--- Comment #2 from Maxim Plyushkin <bugreport0 at proton dot me> ---
It appears that this regression happened between 8.3 and 8.4, not between 10.1
and 11.1.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13/14 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
2023-09-21 22:00 ` [Bug c++/111529] [11/12/13/14 Regression] " pinskia at gcc dot gnu.org
2023-09-21 22:09 ` bugreport0 at proton dot me
@ 2023-09-21 22:12 ` pinskia at gcc dot gnu.org
2023-09-21 22:15 ` pinskia at gcc dot gnu.org
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-09-21 22:12 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work|10.1.0 |
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Maxim Plyushkin from comment #2)
> It appears that this regression happened between 8.3 and 8.4, not between
> 10.1 and 11.1.
Oh the default C++ version changed between 10 and 11 ...
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13/14 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
` (2 preceding siblings ...)
2023-09-21 22:12 ` pinskia at gcc dot gnu.org
@ 2023-09-21 22:15 ` pinskia at gcc dot gnu.org
2023-09-22 13:01 ` cvs-commit at gcc dot gnu.org
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-09-21 22:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |8.3.0
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=89576
Known to fail| |8.4.0
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So it might be the patch which fixed PR 89576 .
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13/14 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
` (3 preceding siblings ...)
2023-09-21 22:15 ` pinskia at gcc dot gnu.org
@ 2023-09-22 13:01 ` cvs-commit at gcc dot gnu.org
2024-05-08 12:16 ` [Bug c++/111529] [11/12/13 " rguenth at gcc dot gnu.org
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2023-09-22 13:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Jason Merrill <jason@gcc.gnu.org>:
https://gcc.gnu.org/g:9c62af101e11e1cce573c2b3d2e18b403412dbc8
commit r14-4229-g9c62af101e11e1cce573c2b3d2e18b403412dbc8
Author: Jason Merrill <jason@redhat.com>
Date: Fri Sep 22 12:10:11 2023 +0100
c++: unroll pragma in templates [PR111529]
We were failing to handle ANNOTATE_EXPR in tsubst_copy_and_build, leading
to
problems with substitution of any wrapped expressions.
Let's also not tell users that lambda templates are available in C++14.
PR c++/111529
gcc/cp/ChangeLog:
* parser.cc (cp_parser_lambda_declarator_opt): Don't suggest
-std=c++14 for lambda templates.
* pt.cc (tsubst_expr): Move ANNOTATE_EXPR handling...
(tsubst_copy_and_build): ...here.
gcc/testsuite/ChangeLog:
* g++.dg/ext/unroll-4.C: New test.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
` (4 preceding siblings ...)
2023-09-22 13:01 ` cvs-commit at gcc dot gnu.org
@ 2024-05-08 12:16 ` rguenth at gcc dot gnu.org
2024-05-24 13:25 ` cvs-commit at gcc dot gnu.org
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-05-08 12:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
Status|NEW |ASSIGNED
Priority|P3 |P2
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
` (5 preceding siblings ...)
2024-05-08 12:16 ` [Bug c++/111529] [11/12/13 " rguenth at gcc dot gnu.org
@ 2024-05-24 13:25 ` cvs-commit at gcc dot gnu.org
2024-05-24 13:26 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2024-05-24 13:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:
https://gcc.gnu.org/g:53cdaa755de57e57ba9e787f232adc3cfde88209
commit r13-8799-g53cdaa755de57e57ba9e787f232adc3cfde88209
Author: Jason Merrill <jason@redhat.com>
Date: Fri Sep 22 12:10:11 2023 +0100
c++: unroll pragma in templates [PR111529]
We were failing to handle ANNOTATE_EXPR in tsubst_copy_and_build, leading
to
problems with substitution of any wrapped expressions.
Let's also not tell users that lambda templates are available in C++14.
PR c++/111529
gcc/cp/ChangeLog:
* parser.cc (cp_parser_lambda_declarator_opt): Don't suggest
-std=c++14 for lambda templates.
* pt.cc (tsubst_expr): Move ANNOTATE_EXPR handling...
(tsubst_copy_and_build): ...here.
gcc/testsuite/ChangeLog:
* g++.dg/ext/unroll-4.C: New test.
(cherry picked from commit 9c62af101e11e1cce573c2b3d2e18b403412dbc8)
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
` (6 preceding siblings ...)
2024-05-24 13:25 ` cvs-commit at gcc dot gnu.org
@ 2024-05-24 13:26 ` cvs-commit at gcc dot gnu.org
2024-05-24 18:38 ` cvs-commit at gcc dot gnu.org
2024-05-24 18:41 ` jason at gcc dot gnu.org
9 siblings, 0 replies; 11+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2024-05-24 13:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
--- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:
https://gcc.gnu.org/g:19827831516023f2dff449af0b228b2d60190a28
commit r12-10468-g19827831516023f2dff449af0b228b2d60190a28
Author: Jason Merrill <jason@redhat.com>
Date: Fri Sep 22 12:10:11 2023 +0100
c++: unroll pragma in templates [PR111529]
We were failing to handle ANNOTATE_EXPR in tsubst_copy_and_build, leading
to
problems with substitution of any wrapped expressions.
Let's also not tell users that lambda templates are available in C++14.
PR c++/111529
gcc/cp/ChangeLog:
* parser.cc (cp_parser_lambda_declarator_opt): Don't suggest
-std=c++14 for lambda templates.
* pt.cc (tsubst_expr): Move ANNOTATE_EXPR handling...
(tsubst_copy_and_build): ...here.
gcc/testsuite/ChangeLog:
* g++.dg/ext/unroll-4.C: New test.
(cherry picked from commit 9c62af101e11e1cce573c2b3d2e18b403412dbc8)
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
` (7 preceding siblings ...)
2024-05-24 13:26 ` cvs-commit at gcc dot gnu.org
@ 2024-05-24 18:38 ` cvs-commit at gcc dot gnu.org
2024-05-24 18:41 ` jason at gcc dot gnu.org
9 siblings, 0 replies; 11+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2024-05-24 18:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:
https://gcc.gnu.org/g:a644775c363979bc25951532819ffa0f244b82f4
commit r11-11448-ga644775c363979bc25951532819ffa0f244b82f4
Author: Jason Merrill <jason@redhat.com>
Date: Fri Sep 22 12:10:11 2023 +0100
c++: unroll pragma in templates [PR111529]
We were failing to handle ANNOTATE_EXPR in tsubst_copy_and_build, leading
to
problems with substitution of any wrapped expressions.
Let's also not tell users that lambda templates are available in C++14.
PR c++/111529
gcc/cp/ChangeLog:
* parser.c (cp_parser_lambda_declarator_opt): Don't suggest
-std=c++14 for lambda templates.
* pt.c (tsubst_expr): Move ANNOTATE_EXPR handling...
(tsubst_copy_and_build): ...here.
gcc/testsuite/ChangeLog:
* g++.dg/ext/unroll-4.C: New test.
(cherry picked from commit 9c62af101e11e1cce573c2b3d2e18b403412dbc8)
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/111529] [11/12/13 Regression] ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope
2023-09-21 21:53 [Bug c++/111529] New: ICE on bool conversion in an unrolled loop condition inside template lambda nested in another template scope bugreport0 at proton dot me
` (8 preceding siblings ...)
2024-05-24 18:38 ` cvs-commit at gcc dot gnu.org
@ 2024-05-24 18:41 ` jason at gcc dot gnu.org
9 siblings, 0 replies; 11+ messages in thread
From: jason at gcc dot gnu.org @ 2024-05-24 18:41 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111529
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 11.5/12.4/13.4/14.
^ permalink raw reply [flat|nested] 11+ messages in thread
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