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* [Bug c++/99745] New: ICE when parameter pack not expanded in bit field
@ 2021-03-24  5:18 hewillk at gmail dot com
  2021-03-24  6:25 ` [Bug c++/99745] " hewillk at gmail dot com
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: hewillk at gmail dot com @ 2021-03-24  5:18 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99745

            Bug ID: 99745
           Summary: ICE when parameter pack not expanded in bit field
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hewillk at gmail dot com
  Target Milestone: ---

https://godbolt.org/z/dz1bcxhYf

template <typename... Ts>
struct S { 
  int a : sizeof(Ts); 
};

S s;


<source>:3:11: internal compiler error: in dependent_type_p, at cp/pt.c:26775
    3 |   int a : sizeof(Ts);
      |           ^~~~~~~~~~
0x1cfa409 internal_error(char const*, ...)
        ???:0
0x6ba5f7 fancy_abort(char const*, int, char const*)
        ???:0
0x8f91c8 dependent_type_p(tree_node*)
        ???:0
0x9c3a1f cxx_sizeof_or_alignof_type(unsigned int, tree_node*, tree_code, bool,
bool)
        ???:0
0x9164a7 tsubst(tree_node*, tree_node*, int, tree_node*)
        ???:0
0x95a1a6 instantiate_class_template(tree_node*)
        ???:0
0x7b2bd0 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
        ???:0
0x8e111d c_parse_file()
        ???:0
0xa5f9c2 c_common_parse_file()
        ???:0
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Bug c++/99745] ICE when parameter pack not expanded in bit field
  2021-03-24  5:18 [Bug c++/99745] New: ICE when parameter pack not expanded in bit field hewillk at gmail dot com
@ 2021-03-24  6:25 ` hewillk at gmail dot com
  2021-03-24 15:48 ` jakub at gcc dot gnu.org
                   ` (6 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: hewillk at gmail dot com @ 2021-03-24  6:25 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99745

--- Comment #1 from 康桓瑋 <hewillk at gmail dot com> ---
Reduce a little:

template <int... Xs>
struct S {
  int x : Xs;
};

S s;


<source>:3:7: internal compiler error: unexpected expression 'Xs' of kind
template_parm_index
    3 |   int x : Xs;
      |       ^

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Bug c++/99745] ICE when parameter pack not expanded in bit field
  2021-03-24  5:18 [Bug c++/99745] New: ICE when parameter pack not expanded in bit field hewillk at gmail dot com
  2021-03-24  6:25 ` [Bug c++/99745] " hewillk at gmail dot com
@ 2021-03-24 15:48 ` jakub at gcc dot gnu.org
  2021-03-25 20:06 ` cvs-commit at gcc dot gnu.org
                   ` (5 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-03-24 15:48 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99745

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2021-03-24
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 50469
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50469&action=edit
gcc11-pr99745.patch

Untested fix.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Bug c++/99745] ICE when parameter pack not expanded in bit field
  2021-03-24  5:18 [Bug c++/99745] New: ICE when parameter pack not expanded in bit field hewillk at gmail dot com
  2021-03-24  6:25 ` [Bug c++/99745] " hewillk at gmail dot com
  2021-03-24 15:48 ` jakub at gcc dot gnu.org
@ 2021-03-25 20:06 ` cvs-commit at gcc dot gnu.org
  2021-03-25 20:07 ` jakub at gcc dot gnu.org
                   ` (4 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-03-25 20:06 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99745

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:0b86a6438191f720bebf880a2b932cd97d10229a

commit r11-7834-g0b86a6438191f720bebf880a2b932cd97d10229a
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Mar 25 21:06:09 2021 +0100

    c++: Diagnose bare parameter packs in bitfield widths [PR99745]

    The following invalid tests ICE because we don't diagnose (and drop) bare
    parameter packs in bitfield widths.

    2021-03-25  Jakub Jelinek  <jakub@redhat.com>

            PR c++/99745
            * decl2.c (grokbitfield): Diagnose bitfields containing bare
parameter
            packs and don't set DECL_BIT_FIELD_REPRESENTATIVE in that case.

            * g++.dg/cpp0x/variadic181.C: New test.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Bug c++/99745] ICE when parameter pack not expanded in bit field
  2021-03-24  5:18 [Bug c++/99745] New: ICE when parameter pack not expanded in bit field hewillk at gmail dot com
                   ` (2 preceding siblings ...)
  2021-03-25 20:06 ` cvs-commit at gcc dot gnu.org
@ 2021-03-25 20:07 ` jakub at gcc dot gnu.org
  2021-03-30 22:41 ` cvs-commit at gcc dot gnu.org
                   ` (3 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-03-25 20:07 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99745

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Bug c++/99745] ICE when parameter pack not expanded in bit field
  2021-03-24  5:18 [Bug c++/99745] New: ICE when parameter pack not expanded in bit field hewillk at gmail dot com
                   ` (3 preceding siblings ...)
  2021-03-25 20:07 ` jakub at gcc dot gnu.org
@ 2021-03-30 22:41 ` cvs-commit at gcc dot gnu.org
  2021-04-20 23:33 ` cvs-commit at gcc dot gnu.org
                   ` (2 subsequent siblings)
  7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-03-30 22:41 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99745

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:f8780caf07340f5d5e55cf5fb1b2be07cabab1ea

commit r10-9622-gf8780caf07340f5d5e55cf5fb1b2be07cabab1ea
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Mar 25 21:06:09 2021 +0100

    c++: Diagnose bare parameter packs in bitfield widths [PR99745]

    The following invalid tests ICE because we don't diagnose (and drop) bare
    parameter packs in bitfield widths.

    2021-03-25  Jakub Jelinek  <jakub@redhat.com>

            PR c++/99745
            * decl2.c (grokbitfield): Diagnose bitfields containing bare
parameter
            packs and don't set DECL_BIT_FIELD_REPRESENTATIVE in that case.

            * g++.dg/cpp0x/variadic181.C: New test.

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Bug c++/99745] ICE when parameter pack not expanded in bit field
  2021-03-24  5:18 [Bug c++/99745] New: ICE when parameter pack not expanded in bit field hewillk at gmail dot com
                   ` (4 preceding siblings ...)
  2021-03-30 22:41 ` cvs-commit at gcc dot gnu.org
@ 2021-04-20 23:33 ` cvs-commit at gcc dot gnu.org
  2021-04-22 16:52 ` cvs-commit at gcc dot gnu.org
  2021-09-11 14:29 ` pinskia at gcc dot gnu.org
  7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-04-20 23:33 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99745

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:4b30a6d214ad94dfdffa93843d628484d2555b51

commit r9-9437-g4b30a6d214ad94dfdffa93843d628484d2555b51
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Mar 25 21:06:09 2021 +0100

    c++: Diagnose bare parameter packs in bitfield widths [PR99745]

    The following invalid tests ICE because we don't diagnose (and drop) bare
    parameter packs in bitfield widths.

    2021-03-25  Jakub Jelinek  <jakub@redhat.com>

            PR c++/99745
            * decl2.c (grokbitfield): Diagnose bitfields containing bare
parameter
            packs and don't set DECL_BIT_FIELD_REPRESENTATIVE in that case.

            * g++.dg/cpp0x/variadic181.C: New test.

    (cherry picked from commit f8780caf07340f5d5e55cf5fb1b2be07cabab1ea)

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Bug c++/99745] ICE when parameter pack not expanded in bit field
  2021-03-24  5:18 [Bug c++/99745] New: ICE when parameter pack not expanded in bit field hewillk at gmail dot com
                   ` (5 preceding siblings ...)
  2021-04-20 23:33 ` cvs-commit at gcc dot gnu.org
@ 2021-04-22 16:52 ` cvs-commit at gcc dot gnu.org
  2021-09-11 14:29 ` pinskia at gcc dot gnu.org
  7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-04-22 16:52 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99745

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-8 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:45f0ddc530eed61c45f1873a9cf7c85eb4f5da10

commit r8-10900-g45f0ddc530eed61c45f1873a9cf7c85eb4f5da10
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Mar 25 21:06:09 2021 +0100

    c++: Diagnose bare parameter packs in bitfield widths [PR99745]

    The following invalid tests ICE because we don't diagnose (and drop) bare
    parameter packs in bitfield widths.

    2021-03-25  Jakub Jelinek  <jakub@redhat.com>

            PR c++/99745
            * decl2.c (grokbitfield): Diagnose bitfields containing bare
parameter
            packs and don't set DECL_BIT_FIELD_REPRESENTATIVE in that case.

            * g++.dg/cpp0x/variadic181.C: New test.

    (cherry picked from commit f8780caf07340f5d5e55cf5fb1b2be07cabab1ea)

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Bug c++/99745] ICE when parameter pack not expanded in bit field
  2021-03-24  5:18 [Bug c++/99745] New: ICE when parameter pack not expanded in bit field hewillk at gmail dot com
                   ` (6 preceding siblings ...)
  2021-04-22 16:52 ` cvs-commit at gcc dot gnu.org
@ 2021-09-11 14:29 ` pinskia at gcc dot gnu.org
  7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-09-11 14:29 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99745

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |8.5

^ permalink raw reply	[flat|nested] 9+ messages in thread

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2021-03-24  6:25 ` [Bug c++/99745] " hewillk at gmail dot com
2021-03-24 15:48 ` jakub at gcc dot gnu.org
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