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* [Bug c++/97895] New: [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255
@ 2020-11-18 16:34 gscfq@t-online.de
2020-11-18 16:45 ` [Bug c++/97895] " mpolacek at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: gscfq@t-online.de @ 2020-11-18 16:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97895
Bug ID: 97895
Summary: [11 Regression] ICE in do_auto_deduction, at
cp/pt.c:29255
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gscfq@t-online.de
Target Milestone: ---
Changed recently between 20201018 and 20201108 :
$ cat z1.cc
namespace std {
template<typename T> struct initializer_list {
const T *ptr;
decltype(sizeof 0) n;
};
auto a = {};
}
$ g++-11-20201115 -c z1.cc
z1.cc:6:13: internal compiler error: Segmentation fault
6 | auto a = {};
| ^
0xc727ef crash_signal
../../gcc/toplev.c:330
0x7642c1 vec<constructor_elt, va_gc, vl_embed>::end()
../../gcc/vec.h:585
0x7642c1 do_auto_deduction(tree_node*, tree_node*, tree_node*, int,
auto_deduction_context, tree_node*, int)
../../gcc/cp/pt.c:29255
0x6c4cf2 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/cp/decl.c:7570
0x74d7f7 cp_parser_init_declarator
../../gcc/cp/parser.c:21362
0x72f42a cp_parser_simple_declaration
../../gcc/cp/parser.c:13943
0x75307a cp_parser_declaration
../../gcc/cp/parser.c:13640
0x753d34 cp_parser_declaration_seq_opt
../../gcc/cp/parser.c:13485
0x753d34 cp_parser_namespace_body
../../gcc/cp/parser.c:19955
0x753d34 cp_parser_namespace_definition
../../gcc/cp/parser.c:19933
0x752eaf cp_parser_declaration
../../gcc/cp/parser.c:13620
0x75390a cp_parser_translation_unit
../../gcc/cp/parser.c:4806
0x75390a c_parse_file()
../../gcc/cp/parser.c:44595
0x81d252 c_common_parse_file()
../../gcc/c-family/c-opts.c:1196
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/97895] [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255
2020-11-18 16:34 [Bug c++/97895] New: [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255 gscfq@t-online.de
@ 2020-11-18 16:45 ` mpolacek at gcc dot gnu.org
2020-11-19 7:34 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2020-11-18 16:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97895
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
Last reconfirmed| |2020-11-18
Ever confirmed|0 |1
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Target Milestone|--- |11.0
Status|UNCONFIRMED |ASSIGNED
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Mine, started with r11-4547.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/97895] [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255
2020-11-18 16:34 [Bug c++/97895] New: [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255 gscfq@t-online.de
2020-11-18 16:45 ` [Bug c++/97895] " mpolacek at gcc dot gnu.org
@ 2020-11-19 7:34 ` rguenth at gcc dot gnu.org
2020-11-19 18:17 ` mpolacek at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-11-19 7:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97895
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/97895] [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255
2020-11-18 16:34 [Bug c++/97895] New: [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255 gscfq@t-online.de
2020-11-18 16:45 ` [Bug c++/97895] " mpolacek at gcc dot gnu.org
2020-11-19 7:34 ` rguenth at gcc dot gnu.org
@ 2020-11-19 18:17 ` mpolacek at gcc dot gnu.org
2020-11-19 18:58 ` cvs-commit at gcc dot gnu.org
2020-11-19 18:59 ` mpolacek at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2020-11-19 18:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97895
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |arthur.j.odwyer at gmail dot com
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
*** Bug 97883 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/97895] [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255
2020-11-18 16:34 [Bug c++/97895] New: [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255 gscfq@t-online.de
` (2 preceding siblings ...)
2020-11-19 18:17 ` mpolacek at gcc dot gnu.org
@ 2020-11-19 18:58 ` cvs-commit at gcc dot gnu.org
2020-11-19 18:59 ` mpolacek at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-11-19 18:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97895
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Marek Polacek <mpolacek@gcc.gnu.org>:
https://gcc.gnu.org/g:25056bdf94d5f3e66bef039702f7fae799ef16b9
commit r11-5178-g25056bdf94d5f3e66bef039702f7fae799ef16b9
Author: Marek Polacek <polacek@redhat.com>
Date: Wed Nov 18 22:49:59 2020 -0500
c++: Fix crash with broken deduction from {} [PR97895]
Unfortunately, the otherwise beautiful
for (constructor_elt &elt : *CONSTRUCTOR_ELTS (init))
is not immune to an empty constructor, so we have to check
CONSTRUCTOR_ELTS first.
gcc/cp/ChangeLog:
PR c++/97895
* pt.c (do_auto_deduction): Don't crash when the constructor has
zero elements.
gcc/testsuite/ChangeLog:
PR c++/97895
* g++.dg/cpp0x/auto54.C: New test.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/97895] [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255
2020-11-18 16:34 [Bug c++/97895] New: [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255 gscfq@t-online.de
` (3 preceding siblings ...)
2020-11-19 18:58 ` cvs-commit at gcc dot gnu.org
@ 2020-11-19 18:59 ` mpolacek at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2020-11-19 18:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97895
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 6+ messages in thread
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2020-11-18 16:34 [Bug c++/97895] New: [11 Regression] ICE in do_auto_deduction, at cp/pt.c:29255 gscfq@t-online.de
2020-11-18 16:45 ` [Bug c++/97895] " mpolacek at gcc dot gnu.org
2020-11-19 7:34 ` rguenth at gcc dot gnu.org
2020-11-19 18:17 ` mpolacek at gcc dot gnu.org
2020-11-19 18:58 ` cvs-commit at gcc dot gnu.org
2020-11-19 18:59 ` mpolacek at gcc dot gnu.org
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