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RE: [Patch, ARM, ping1] Fix PR target/56846


On Thu, 27 Nov 2014, Thomas Preud'homme wrote:

> Thanks. Ccing release manager for their opinion.

It doesn't look ARM specific and frankly I have not too much expertise
in this area.  The patch has been on trunk for more than two months
though so I guess it is ok to backport.

Richard.

> Best regards,
> 
> Thomas
> 
> > -----Original Message-----
> > From: Jonathan Wakely [mailto:jwakely@redhat.com]
> > Sent: Wednesday, November 26, 2014 5:33 PM
> > To: Thomas Preud'homme
> > Cc: Tony Wang; gcc-patches@gcc.gnu.org; dan@debian.org; aph-
> > gcc@littlepinkcloud.com; Richard Earnshaw; Ramana Radhakrishnan;
> > libstdc++@gcc.gnu.org
> > Subject: Re: [Patch, ARM, ping1] Fix PR target/56846
> > 
> > On 26/11/14 17:23 -0000, Thomas Preud'homme wrote:
> > >Ping?
> > 
> > I'm OK with backporting it if a release manager approves it.
> > 
> > 
> > >> -----Original Message-----
> > >> From: gcc-patches-owner@gcc.gnu.org [mailto:gcc-patches-
> > >> owner@gcc.gnu.org] On Behalf Of Thomas Preud'homme
> > >> Sent: Wednesday, November 19, 2014 6:00 PM
> > >> To: Tony Wang; gcc-patches@gcc.gnu.org; dan@debian.org; aph-
> > >> gcc@littlepinkcloud.com; Richard Earnshaw; Ramana Radhakrishnan;
> > >> libstdc++@gcc.gnu.org
> > >> Subject: RE: [Patch ARM] Fix PR target/56846
> > >>
> > >> > From: gcc-patches-owner@gcc.gnu.org [mailto:gcc-patches-
> > >> > owner@gcc.gnu.org] On Behalf Of Tony Wang
> > >> >
> > >>
> > >> >
> > >> > Hi all,
> > >> >
> > >> > The bug is reported at
> > >> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56846, and itâs about
> > the
> > >> > problem that
> > >> > when exception handler is involved in the function, then
> > >> > _Unwind_Backtrace function will run into deadloop on
> > >> > arm target.
> > >>
> > >> The patch (in r215101) can be backported without any change on 4.8
> > and
> > >> 4.9 branches. I checked in QEMU with and without the patch on both
> > >> branches and it indeed solves the problem.
> > >>
> > >> Testsuite run without regression when compiled with arm-none-eabi
> > >> cross compiler and executed on QEMU emulating Cortex-M3.
> > >>
> > >> I also bootstrapped gcc on x86_64-linux-gnu and run the testsuite
> > >> without
> > >> regressions.
> > >>
> > >> Is it ok for backport?
> > >>
> > >> Best regards,
> > >>
> > >> Thomas
> > >>
> > >>
> > >>
> > >>
> > >
> > >
> > >
> > >
> 
> 
> 
> 
> 

-- 
Richard Biener <rguenther@suse.de>
SUSE LINUX GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendoerffer, HRB 21284
(AG Nuernberg)
Maxfeldstrasse 5, 90409 Nuernberg, Germany

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