From: Pedro Alves <pedro@codesourcery.com>
To: gdb@sourceware.org
Cc: Mark Kettenis <mark.kettenis@xs4all.nl>, drow@false.org
Subject: Re: Regression
Date: Tue, 10 Feb 2009 19:18:00 -0000 [thread overview]
Message-ID: <200902101918.13308.pedro@codesourcery.com> (raw)
In-Reply-To: <200902101905.37812.pedro@codesourcery.com>
Extended this a bit more:
On Tuesday 10 February 2009 19:05:37, Pedro Alves wrote:
> The part that's breaking the BSDs is the fact that we now
> remove breakpoints from the inferior.
On Tuesday 10 February 2009 18:39:04, Mark Kettenis wrote:
> Indeed. OpenBSD/i386 (as well as NetBSD, FreeBSD and probably Darwin)
> clears the trace bit before running the signal handler.
We don't see the problem on linux, since there's a stop and
resume *right at the begining* of the signal handler, due to the
single-step entering the signal handler. GDB happens
to re-install breakpoints in the inferior in that resume. This
happens *before* the inferior's flow passing by the instruction
where there's a breakpoint at ("break handle_USR1" is installed
after the prologue).
--
Pedro Alves
next prev parent reply other threads:[~2009-02-10 19:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-10 15:17 Regression Mark Kettenis
2009-02-10 15:27 ` Regression Daniel Jacobowitz
2009-02-10 15:47 ` Regression Mark Kettenis
2009-02-10 16:06 ` Regression Pedro Alves
2009-02-10 16:18 ` Regression Tristan Gingold
2009-02-10 18:00 ` Regression Pedro Alves
2009-02-10 18:40 ` Regression Mark Kettenis
2009-02-10 19:05 ` Regression Pedro Alves
2009-02-10 19:18 ` Pedro Alves [this message]
2009-02-10 19:27 ` Regression Pedro Alves
2009-02-11 15:50 ` Regression Daniel Jacobowitz
-- strict thread matches above, loose matches on Subject: below --
2009-02-10 15:14 Regression Mark Kettenis
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