Performance issue with COW strings?

[Paolo Carlini]

Dan Kegel wrote:

> We're hot to trot right now, so we'd happily take a quick-and-dirty
> interim patch.
> We'll also gladly take the cleaner patch in a couple weeks.
> Either or both, your call.

Ok. Notice, however, that, strictly speaking, we are not talking about a
"patch": we are talking about the entire libstdc++-v3 in the v7-branch
version: you will just check it out and plug it in the mainline or 4_0
sources.

Paolo.