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Date: Wed, 8 May 2013 14:36:17 -0400
From: Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: printf + pthreads+gdb+mintty = hang?
Message-ID: <20130508183617.GA8072@ednor.casa.cgf.cx>
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References: <5189627F DOT 3050801 AT cs DOT utoronto DOT ca>
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User-Agent: Mutt/1.5.20 (2009-06-14)

On Tue, May 07, 2013 at 04:22:23PM -0400, Ryan Johnson wrote:
>Hi all,
>
>Running the attached STC inside gdb hangs (zero CPU util, have to kill 
>gdb from Task Manager, killing a.exe doesn't cut it).
>
>Compile line used: g++ -Wall -g -mthreads -DBUG bug.cpp
>
>I currently have the following package versions:
>cygwin-1.7.18(0.263/5/3) 2013-04-19
>mintty-1.1.3-1
>gdb-7.6.50-1
>gcc-4.5.3-3
>
>The problem seems to be related to threads calling fprintf inside gdb, 
>it runs fine from the command line, or with printf instead; both fprintf 
>and printf sometimes trigger "warning: SuspendThread failed. (winerr 6)" 
>(not sure if that matters).
>
>Known issue? Easy workaround? New bug?

Known, long-standing issue.  I put a workaround in the latest snapshot.

cgf

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