[Bug libstdc++/56193] ios_base should replace operator void* with explicit operator bool in C++11 onwards.

[3dw4rd at verizon dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56193



--- Comment #1 from Ed Smith-Rowland <3dw4rd at verizon dot net> 2013-02-03 
17:40:16 UTC ---

Created attachment 29343

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29343

Patch including testcase.



Here is a small patch.  I'm not ure the bast place to put the testcase.



Testing is underway.



The change builds and fails to compile the testcase as expected on

x86_64-unknown-linux.