From: Pedro Alves <pedro@codesourcery.com>
To: gdb-patches@sourceware.org
Cc: Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>,
jan.kratochvil@redhat.com
Subject: Re: internal error when setting watchpoints in programs with fork() on ppc
Date: Fri, 04 Nov 2011 22:52:00 -0000 [thread overview]
Message-ID: <201111042252.13043.pedro@codesourcery.com> (raw)
In-Reply-To: <4EB46474.2040206@linux.vnet.ibm.com>
On Friday 04 November 2011 22:17:24, Edjunior Barbosa Machado wrote:
> Hi,
>
> testing upstream gdb, I'm facing this internal error when running gdb.threads/watchpoint-fork.exp testcase (from this non-upstreamed patch http://sourceware.org/ml/gdb-patches/2010-12/msg00043.html, found in gdb from Fedora and enterprise distros) on ppc64, more specifically in the `set follow-fork-mode child' part of the test:
>
> ../../gdb.git/gdb/frame.c:2375: internal-error: frame_cleanup_after_sniffer: Assertion `frame->prologue_cache == NULL' failed.
>
> Actually, noticed that before this error, gdb fails to read r31 due to a wrong pid when issuing ptrace call on fetch_register() from ppc-linux-nat.c. This gdb-follow-child-stale-parent.patch from Jan Kratochvil (http://web.archiveorange.com/archive/v/iRKxrvg3CBOJl9wyV0pi, attached bellow) fixes this issue. Does this look ok for FSF gdb as well?
I really couldn't tell what was the real problem from this description.
--
Pedro Alves
next prev parent reply other threads:[~2011-11-04 22:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-04 22:17 Edjunior Barbosa Machado
2011-11-04 22:52 ` Pedro Alves [this message]
2011-11-06 23:00 ` Jan Kratochvil
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