[Bug c++/60951] New: [4.9 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor

[Bug c++/60951] New: [4.9 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor

[radiantstatue at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60951

            Bug ID: 60951
           Summary: [4.9 Regression][C++11] ICE with braced-init-list
                    assignment and constexpr constructor
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: radiantstatue at gmail dot com

Test case:
struct Foo {
  constexpr Foo(int x = 0) : memb(x) {}
  int memb;
};

struct FooContainer {
  Foo foo[2];
};

void fubar() {
  int nonConst = 0;
  FooContainer fooContainer;
  fooContainer = { { 0, nonConst } };
}

$ g++ -std=c++11 -S testcase.cpp
testcase.cpp: In function ‘void fubar()’:
testcase.cpp:13:37: internal compiler error: in gimplify_init_ctor_preeval, at
gimplify.c:3320
   fooContainer = { { 0, nonConst } };
                                     ^

The error happens if mixed const/non-const expressions are used in the braced
init list.
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From: "radiantstatue at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/60951] [4.9 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor
Date: Thu, 24 Apr 2014 13:14:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id`951

radiantstatue at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|major                       |normal

[Bug c++/60951] [4.9/4.10 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60951

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-04-24
      Known to work|                            |4.8.2
            Summary|[4.9 Regression][C++11] ICE |[4.9/4.10
                   |with braced-init-list       |Regression][C++11] ICE with
                   |assignment and constexpr    |braced-init-list assignment
                   |constructor                 |and constexpr constructor
     Ever confirmed|0                           |1

[Bug c++/60951] [4.9/4.10 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60951

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |jason at gcc dot gnu.org
   Target Milestone|---                         |4.9.1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r208027 aka PR60186 fix.

[Bug c++/60951] [4.9/4.10 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60951

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

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

[Bug c++/60951] [4.9/4.10 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60951

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Apr 30 14:23:11 2014
New Revision: 209933

URL: http://gcc.gnu.org/viewcvs?rev=209933&root=gcc&view=rev
Log:
    PR c++/60951
    * typeck2.c (massage_init_elt): Use maybe_constant_init.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-aggr1.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/typeck2.c

[Bug c++/60951] [4.9/4.10 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60951

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

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

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 4.9.1.

[Bug c++/60951] [4.9/4.10 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60951

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Apr 30 14:23:27 2014
New Revision: 209935

URL: http://gcc.gnu.org/viewcvs?rev=209935&root=gcc&view=rev
Log:
    PR c++/60951
    * typeck2.c (massage_init_elt): Use maybe_constant_init.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/g++.dg/cpp0x/constexpr-aggr1.C
Modified:
    branches/gcc-4_9-branch/gcc/cp/ChangeLog
    branches/gcc-4_9-branch/gcc/cp/typeck2.c

[Bug c++/60951] [4.9/4.10 Regression][C++11] ICE with braced-init-list assignment and constexpr constructor

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60951

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |b.r.longbons at gmail dot com

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
*** Bug 61040 has been marked as a duplicate of this bug. ***