[Bug c++/66445] New: [5/6 Regression] ICE with lambda in stmt expression in a template

[Bug c++/66445] New: [5/6 Regression] ICE with lambda in stmt expression in a template

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66445

            Bug ID: 66445
           Summary: [5/6 Regression] ICE with lambda in stmt expression in
                    a template
           Product: gcc
           Version: 5.1.1
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org
                CC: jason at gcc dot gnu.org
  Target Milestone: ---

template <typename> void foo ()
{
  auto a = ({ [=] {}; });
}

ICEs with -std=c++11 as well as -std=c++14 starting with r217748.
The diagnostics is:
rh1228916.ii: In function ‘void fn1()’:
rh1228916.ii:3:24: sorry, unimplemented: unexpected AST of kind type_decl
   auto a = ({ [=] {}; });
                        ^
rh1228916.ii:3:24: internal compiler error: in potential_constant_expression_1,
at cp/constexpr.c:4235
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/66445] [5/6 Regression] ICE with lambda in stmt expression in a template
Date: Sat, 06 Jun 2015 20:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf445

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-06-06
   Target Milestone|---                         |5.2
     Ever confirmed|0                           |1

[Bug c++/66445] [5/6 Regression] ICE with lambda in stmt expression in a template

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66445

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Jun 11 15:04:54 2015
New Revision: 224379

URL: https://gcc.gnu.org/viewcvs?rev=224379&root=gcc&view=rev
Log:
        PR c++/66445
        * constexpr.c (potential_constant_expression_1): Handle a
        DECL_EXPR of TYPE_DECL.

Added:
    branches/gcc-5-branch/gcc/testsuite/g++.dg/ext/stmtexpr18.C
Modified:
    branches/gcc-5-branch/gcc/cp/ChangeLog
    branches/gcc-5-branch/gcc/cp/constexpr.c

[Bug c++/66445] [5/6 Regression] ICE with lambda in stmt expression in a template

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66445

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Jun 11 15:45:08 2015
New Revision: 224382

URL: https://gcc.gnu.org/viewcvs?rev=224382&root=gcc&view=rev
Log:
        PR c++/66445
        * constexpr.c (potential_constant_expression_1): Handle a
        DECL_EXPR of TYPE_DECL.

Added:
    trunk/gcc/testsuite/g++.dg/ext/stmtexpr18.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c

[Bug c++/66445] [5/6 Regression] ICE with lambda in stmt expression in a template

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66445

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |megahallon at gmail dot com

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
*** Bug 66517 has been marked as a duplicate of this bug. ***

[Bug c++/66445] [5/6 Regression] ICE with lambda in stmt expression in a template

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66445

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.