[Bug libstdc++/64443] New std::string implementation breaks tests on AArch64.

[belagod at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64443

--- Comment #5 from Tejas Belagod <belagod at gcc dot gnu.org> ---
(In reply to Tejas Belagod from comment #3)
> (In reply to Andrew Pinski from comment #1)
> > >This commit seems to be breaking libstdc++-v3 runs on AArch64.
> > 
> > Is this under Linux or with newlib?
> 
> newlib. When run on a fast-model(simulator) they fail by raising an
> exception. I'll post more info on the kind of exception rasied when I've
> investigated a bit more...

It is a memory fault. Looks like an invalid memory read. So, similar to
PR64368, I guess.