Re: [PATCH] [PING^2] Fix for PR libstdc++/60758

[Alexey Merzlyakov <alexey dot merzlyakov at samsung dot com>]

On 20.05.2014 16:25, Richard Earnshaw wrote:
> On 16/05/14 14:56, Alexey Merzlyakov wrote:
> > On 07.05.2014 13:28, Ramana Radhakrishnan wrote:
> > > On 05/07/14 09:19, Yury Gribov wrote:
> > > > -------- Original Message --------
> > > > Subject: [PING] [PATCH] Fix for PR libstdc++/60758
> > > > Date: Thu, 17 Apr 2014 17:48:12 +0400
> > > > From: Alexey Merzlyakov <alexey.merzlyakov@samsung.com>
> > > > To: Ramana Radhakrishnan <ramrad01@arm.com>
> > > > CC: gcc-patches@gcc.gnu.org <gcc-patches@gcc.gnu.org>, Viacheslav
> > > > Garbuzov <v.garbuzov@samsung.com>, Yury Gribov <y.gribov@samsung.com>
> > > >
> > > > Hi,
> > > >
> > > > This fixes infinite backtrace in __cxa_end_cleanup().
> > > > Regtest was finished with no regressions on arm-linux-gnueabi(sf).
> > > >
> > > > The patch posted at:
> > > >      http://gcc.gnu.org/ml/gcc-patches/2014-04/msg00496.html
> > > This is OK to apply if no regressions.
> > >
> > > Thanks,
> > > Ramana
> > >
> > > > Thanks in advance.
> > > >
> > > > Best regards,
> > > > Merzlyakov Alexey
> > I have re-tested it again on arm-linux-gnueabi(sf) - no regressions.
> > The change was committed to mainline as revision 210515.
> >
> > Best regards,
> > Merzlyakov Alexey
> Unfortunately, this breaks thumb1.  Pop instructions there can only
> contain low registers and the PC.
>
> R.

The following PR is opened for this problem:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61223

Thumb1 failure was also detected and reported in pr60758.
I've proposed a thumb1 bugfix there. Regtest for the fix currently is in 
progress.

Best regards,
Merzlyakov Alexey