[Bug c++/49598] [C++0x] Ice on lambda with implicit capture by value.

["redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49598

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.07.02 11:25:48
                 CC|                            |jason at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-07-02 11:25:48 UTC ---
The ICE seems to be when initialising the closure type's data member for an
object of reference type implicitly-captured by copy.

Slightly further reduced:

int
main()
{
  int i = 10;
  int& ir = i;

  [=] 
  {
       (void) ir;
  }();
}


(In reply to comment #1)
> With [=, ir] I get a warning:
> lamb3.cpp:10:7: warning: explicit by-copy capture of âirâ redundant with
> by-copy capture default [enabled by default]
> But it compiles.
> 
> With [=, i] I get the ICE.

That's invalid:
"If a lambda-capture includes a capture-default that is =, the lambda-capture
shall not contain this and each identiïer it contains shall be preceded by &."