[Bug c++/64462] New: ICE while compiling lambda using local constexpr reference variable

[Bug c++/64462] New: ICE while compiling lambda using local constexpr reference variable

[lunow at math dot hu-berlin.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64462

            Bug ID: 64462
           Summary: ICE while compiling lambda using local constexpr
                    reference variable
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: lunow at math dot hu-berlin.de

The following Code triggers the crash (C++11 mode)

int x = 0;
int z;

int main() {
  constexpr int& y = x;
  [=] { z = y; }();
}

$ g++ gccbug.cpp -std=c++11
gccbug.cpp: In lambda function:
gccbug.cpp:7:11: internal compiler error: in cp_build_modify_expr, at
cp/typeck.c:7446
   [=] { z = y; }();
           ^
Please submit a full bug report,
...

[Bug c++/64462] ICE while compiling lambda using local constexpr reference variable

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64462

Ville Voutilainen <ville.voutilainen at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-01-08
                 CC|                            |ville.voutilainen at gmail dot com
      Known to work|                            |5.0
     Ever confirmed|0                           |1
      Known to fail|                            |4.8.2, 4.9.1

--- Comment #1 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
I don't see an ICE with the current trunk.

[Bug c++/64462] ICE while compiling lambda using local constexpr reference variable

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64462

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Thanks Ville. Let's add the testcase and close this.

[Bug c++/64462] ICE while compiling lambda using local constexpr reference variable

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64462

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |5.0

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Done.

[Bug c++/64462] ICE while compiling lambda using local constexpr reference variable

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64462

--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Thu Jan  8 17:48:38 2015
New Revision: 219352

URL: https://gcc.gnu.org/viewcvs?rev=219352&root=gcc&view=rev
Log:
2015-01-08  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/64462
    * g++.dg/cpp0x/constexpr-64462.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-64462.C
Modified:
    trunk/gcc/testsuite/ChangeLog