[patch] Avoid memory allocations when making futures ready

[Jonathan Wakely]

On 08/08/14 00:07 +0200, Dominique Dhumieres wrote:
>> This patch replaces some reference members with pointers, ...
>> ...
>> Tested x86_64-linux, committed to trunk.
>
>This breaks bootstrap (see https://gcc.gnu.org/ml/gcc-regression/2014-08/):

Fixed by this patch, sorry about that. I was caught out (again) by the
files in libstdc++-v3/src/*/ not being recompiled when headers change.

Tested x86_64-linux with full bootstrap, committed to trunk.

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