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[patch] Minor simplification in <functional>

From: Jonathan Wakely <jwakely at redhat dot com>
To: libstdc++ at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
Date: Wed, 16 Apr 2014 18:46:22 +0100
Subject: [patch] Minor simplification in <functional>
Authentication-results: sourceware.org; auth=none

This avoids a template instantiation when storing a function pointer
in a std::function.

At some point I want to extend the definition of
__is_location_invariant to include trivially-copyable object types.
I suspect this may be why boost::function can perform significantly
better than our std::function in some cases.

Tested x86_64-linux, committed to trunk.

Attachment: patch.txt
Description: Text document

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