[patch] libstdc++/56193 re-add basic_ios::operator bool()

[Jonathan Wakely]

On 25/09/14 11:24 +0100, Jonathan Wakely wrote:
>On 24/09/14 23:18 +0100, Jonathan Wakely wrote:
>>This changes operator void*() to operator bool(), and ensures we
>>export both from the library.
>>
>>I have a new test for this, but will commit that tomorrow.
>
>Here are the tests.

Argh, I took the { dg-do compile } out then forgot to put it back.
Here it is, tested x86_64-linux and committed to trunk.

I hope I'm done with iostreams for now, at least until next week when
I want to apply the hexfloat patch from earlier this year.

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