From: Houder <houder@xs4all.nl>
To: cygwin@cygwin.com
Subject: Re: MinTTY requires gdiplus.dll ? (2)
Date: Fri, 30 Nov 2018 14:06:00 -0000 [thread overview]
Message-ID: <4607f540cb6271db6e372d9e11138159@xs4all.nl> (raw)
In-Reply-To: <20181130131918.GI30649@calimero.vinschen.de>
On 2018-11-30 14:19, Corinna Vinschen wrote:
> On Nov 30 13:42, Houder wrote:
>> On 2018-11-29 20:58, Corinna Vinschen wrote:
>> > On Nov 29 19:41, Houder wrote:
>> [snip]
>>
>> > > --- Process 3112 loaded C:\Windows\System32\winmm.dll at
>> > > 000007fefa040000
>> > > --- Process 3112 loaded C:\Windows\System32\winspool.drv at
>> > > 000007fef9f10000
>> > > --- Process 3112, exception c0000005 at 0000000180044bb3
>> > > --- Process 3112 exited with status 0xc0000005
>> > > Segmentation fault
>> >
>> > I can reproduce this but while it's clear *where* it happens, it's
>> > unclear *when* and *why* it happens.
>> >
>> > It only occurs if mintty is the first process in a process tree. I.e.,
>> > when starting mintty from a shell running in a DOS window, the problem
>> > disappears.
>> >
>> > Worse, the problem also disappears when running mintty under gdb.
>>
>> (I do not understand _exactly_ what you say here)
>>
>> Uhm, if I invoke "gdb /usr/bin/mintty" (so, from the "Dos box") the
>> problem
>> does NOT disappear.
>>
>> That is:
>>
>> 2 threads are created ... and that is it; no MinTTY window showing
>> up!
>
> I'm trying to avoid remote debugging so I rather try to reproduce this
> @work. However, if you're interested in debugging this, set a
> breakpoint to clk_monotonic_t::now() and observe how the call to the
> virtual init() method hangs or crashes. If you find out why, I'd be
> most grateful.
Sorry Corinna, your request is way over my head. I can only confirm,
that gdb
does not return in clock.c
I set a breakpoint as you instructed. Subsequently I entered "run":
Thread 1 hit Breakpoint 1, clk_monotonic_t::now (
this=this@entry=0x1802f91b0
<strace::microseconds()::clock_monotonic>,
clockid=clockid@entry=0, ts=ts@entry=0xffffc7c0)
at
/ext/build/mknetrel/src/cygwin-snapshot-20181129-1/winsup/cygwin/clock.cc
Then I "stepped" through winsup/cygwin/clock.cc
169 in
/ext/build/mknetrel/src/cygwin-snapshot-20181129-1/winsup/cygwin/cloc
k.cc
(gdb)
Here "I lost control" ...
Using https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git, I can
see that
it is "close" to the call of init() in clk_monotonic_t::now().
That is it for the moment. Still curious what Thomas W. has to report
about his
system.
Regards,
Henri
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next prev parent reply other threads:[~2018-11-30 14:06 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-29 18:42 Houder
2018-11-29 19:58 ` Corinna Vinschen
2018-11-29 22:11 ` Thomas Wolff
2018-11-29 22:40 ` Houder
2018-11-29 23:35 ` Houder
2018-11-30 12:17 ` Corinna Vinschen
2018-11-30 12:42 ` Houder
2018-11-30 13:19 ` Corinna Vinschen
2018-11-30 14:06 ` Houder [this message]
2018-12-01 8:57 ` Houder
2018-12-01 9:49 ` Corinna Vinschen
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