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* [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index
@ 2021-04-22 8:07 hewillk at gmail dot com
2021-04-22 10:35 ` [Bug c++/100198] " rguenth at gcc dot gnu.org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: hewillk at gmail dot com @ 2021-04-22 8:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198
Bug ID: 100198
Summary: ICE: unexpected expression 'E' of kind
template_parm_index
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hewillk at gmail dot com
Target Milestone: ---
12 Regression extremely related to fixed PR 100109.
template <int... E>
void f() {
([] { enum e { e = E }; }(), ...);
}
template void f<0>();
<source>:3:14: internal compiler error: unexpected expression 'E' of kind
template_parm_index
3 | ([] { enum e { e = E }; }(), ...);
| ^
0x1d02fc9 internal_error(char const*, ...)
???:0
0x7a6f3d build_enumerator(tree_node*, tree_node*, tree_node*, tree_node*,
unsigned int)
???:0
0x92c558 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
???:0
0x91843d tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0x9184e7 tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0x94ba12 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
???:0
0x932f5f tsubst_pack_expansion(tree_node*, tree_node*, int, tree_node*)
???:0
0x91e31f instantiate_decl(tree_node*, bool, bool)
???:0
0x96024b instantiate_pending_templates(int)
???:0
0x7cd029 c_parse_final_cleanups()
???:0
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/100198] ICE: unexpected expression 'E' of kind template_parm_index
2021-04-22 8:07 [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index hewillk at gmail dot com
@ 2021-04-22 10:35 ` rguenth at gcc dot gnu.org
2021-04-22 12:45 ` hewillk at gmail dot com
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-04-22 10:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
would be nice if you'd hinted on whether you think your testcases are valid C++
or not. guessing invalid here
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/100198] ICE: unexpected expression 'E' of kind template_parm_index
2021-04-22 8:07 [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index hewillk at gmail dot com
2021-04-22 10:35 ` [Bug c++/100198] " rguenth at gcc dot gnu.org
@ 2021-04-22 12:45 ` hewillk at gmail dot com
2021-04-22 15:33 ` [Bug c++/100198] [12 Regression] " mpolacek at gcc dot gnu.org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: hewillk at gmail dot com @ 2021-04-22 12:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198
--- Comment #2 from 康桓瑋 <hewillk at gmail dot com> ---
(In reply to Richard Biener from comment #1)
> would be nice if you'd hinted on whether you think your testcases are valid
> C++ or not. guessing invalid here
Oops, I should do that, this is a valid code.
https://godbolt.org/z/Kx67MP85f
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/100198] [12 Regression] ICE: unexpected expression 'E' of kind template_parm_index
2021-04-22 8:07 [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index hewillk at gmail dot com
2021-04-22 10:35 ` [Bug c++/100198] " rguenth at gcc dot gnu.org
2021-04-22 12:45 ` hewillk at gmail dot com
@ 2021-04-22 15:33 ` mpolacek at gcc dot gnu.org
2022-01-17 14:59 ` [Bug c++/100198] [12 Regression] ICE with enum in lambda in pack expansion rguenth at gcc dot gnu.org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2021-04-22 15:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-04-22
Target Milestone|--- |12.0
Summary|ICE: unexpected expression |[12 Regression] ICE:
|'E' of kind |unexpected expression 'E'
|template_parm_index |of kind template_parm_index
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/100198] [12 Regression] ICE with enum in lambda in pack expansion
2021-04-22 8:07 [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index hewillk at gmail dot com
` (2 preceding siblings ...)
2021-04-22 15:33 ` [Bug c++/100198] [12 Regression] " mpolacek at gcc dot gnu.org
@ 2022-01-17 14:59 ` rguenth at gcc dot gnu.org
2022-01-18 23:23 ` jason at gcc dot gnu.org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-01-17 14:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Keywords| |needs-bisection
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/100198] [12 Regression] ICE with enum in lambda in pack expansion
2021-04-22 8:07 [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index hewillk at gmail dot com
` (3 preceding siblings ...)
2022-01-17 14:59 ` [Bug c++/100198] [12 Regression] ICE with enum in lambda in pack expansion rguenth at gcc dot gnu.org
@ 2022-01-18 23:23 ` jason at gcc dot gnu.org
2022-01-28 3:21 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: jason at gcc dot gnu.org @ 2022-01-18 23:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Nested classes/enums like this are broken in pack expansions if they depend on
parameter packs. The patch for PR100109 changed this from rejects-valid to
ice-on-valid, but it isn't something newly broken. I suppose I could change it
back to rejects-valid by reverting the PR100109 patch, but that's just trading
one ICE for another.
This functionality isn't going to be implemented for GCC 12.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/100198] [12 Regression] ICE with enum in lambda in pack expansion
2021-04-22 8:07 [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index hewillk at gmail dot com
` (4 preceding siblings ...)
2022-01-18 23:23 ` jason at gcc dot gnu.org
@ 2022-01-28 3:21 ` cvs-commit at gcc dot gnu.org
2022-01-28 5:09 ` [Bug c++/100198] " jason at gcc dot gnu.org
2022-01-28 5:09 ` jason at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-01-28 3:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <jason@gcc.gnu.org>:
https://gcc.gnu.org/g:4d2efec9f229c2e2e7cb6c3f06beb4c3e9d244a1
commit r12-6909-g4d2efec9f229c2e2e7cb6c3f06beb4c3e9d244a1
Author: Jason Merrill <jason@redhat.com>
Date: Thu Jan 27 17:46:43 2022 -0500
c++: pack in enumerator in lambda [PR100198]
The GCC 8 lambda overhaul fixed most uses of lambdas in pack expansions,
but
local enums and classes within such lambdas that depend on parameter packs
are still broken. For now, give a sorry instead of an ICE or incorrect
error.
PR c++/100198
PR c++/100030
PR c++/100282
gcc/cp/ChangeLog:
* parser.cc (cp_parser_enumerator_definition): Sorry on parameter
pack in lambda.
(cp_parser_class_head): And in class attributes.
* pt.cc (check_for_bare_parameter_packs): Sorry instead of error
in lambda.
gcc/testsuite/ChangeLog:
* g++.dg/cpp0x/lambda/lambda-variadic13.C: Accept the sorry
as well as the correct error.
* g++.dg/cpp0x/lambda/lambda-variadic14.C: Likewise.
* g++.dg/cpp0x/lambda/lambda-variadic14a.C: New test.
* g++.dg/cpp0x/lambda/lambda-variadic15.C: New test.
* g++.dg/cpp0x/lambda/lambda-variadic16.C: New test.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/100198] enum in lambda in pack expansion
2021-04-22 8:07 [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index hewillk at gmail dot com
` (5 preceding siblings ...)
2022-01-28 3:21 ` cvs-commit at gcc dot gnu.org
@ 2022-01-28 5:09 ` jason at gcc dot gnu.org
2022-01-28 5:09 ` jason at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: jason at gcc dot gnu.org @ 2022-01-28 5:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[12 Regression] ICE with |enum in lambda in pack
|enum in lambda in pack |expansion
|expansion |
Keywords|ice-on-valid-code, |rejects-valid
|needs-bisection |
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
ICE regression fixed, leaving the PR open for the rejects-valid bug that is not
a regression.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/100198] enum in lambda in pack expansion
2021-04-22 8:07 [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index hewillk at gmail dot com
` (6 preceding siblings ...)
2022-01-28 5:09 ` [Bug c++/100198] " jason at gcc dot gnu.org
@ 2022-01-28 5:09 ` jason at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: jason at gcc dot gnu.org @ 2022-01-28 5:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|12.0 |---
^ permalink raw reply [flat|nested] 9+ messages in thread
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2021-04-22 8:07 [Bug c++/100198] New: ICE: unexpected expression 'E' of kind template_parm_index hewillk at gmail dot com
2021-04-22 10:35 ` [Bug c++/100198] " rguenth at gcc dot gnu.org
2021-04-22 12:45 ` hewillk at gmail dot com
2021-04-22 15:33 ` [Bug c++/100198] [12 Regression] " mpolacek at gcc dot gnu.org
2022-01-17 14:59 ` [Bug c++/100198] [12 Regression] ICE with enum in lambda in pack expansion rguenth at gcc dot gnu.org
2022-01-18 23:23 ` jason at gcc dot gnu.org
2022-01-28 3:21 ` cvs-commit at gcc dot gnu.org
2022-01-28 5:09 ` [Bug c++/100198] " jason at gcc dot gnu.org
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