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RE: [Patch, ARM, ping1] Fix PR target/56846
- From: "Thomas Preud'homme" <thomas dot preudhomme at arm dot com>
- To: "Tony Wang" <Tony dot Wang at arm dot com>, <gcc-patches at gcc dot gnu dot org>, <dan at debian dot org>, <aph-gcc at littlepinkcloud dot com>, "Richard Earnshaw" <Richard dot Earnshaw at arm dot com>, "Ramana Radhakrishnan" <Ramana dot Radhakrishnan at arm dot com>, <libstdc++ at gcc dot gnu dot org>
- Date: Wed, 26 Nov 2014 17:23:11 -0000
- Subject: RE: [Patch, ARM, ping1] Fix PR target/56846
- Authentication-results: sourceware.org; auth=none
Ping?
> -----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
>
>
>
>