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Date: Sat, 08 Sep 2018 22:40:17 +0900
From: Lemures Lemniscati <lemures.lemniscati@gmail.com>
To: "cygwin@cygwin.com" <cygwin@cygwin.com>
Subject: Re: [ANNOUNCEMENT] Updated: ImageMagick-6.9.9.11-1
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Thank you for testing.
Sorry for missending.

> > Could you test with -verbose option?
> >
> > identify -verbose a_depth1.psd
> 
> it stacks. I guess same race internally

They are different, in fact.
Is cygz.dll is causing an issue?

================================
With -verbose option
--------------------------------

> $ gdb identify
> GNU gdb (GDB) (Cygwin 7.12.1-2) 7.12.1
> Copyright (C) 2017 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-pc-cygwin".
> Type "show configuration" for configuration details.
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>.
> Find the GDB manual and other documentation resources online at:
> <http://www.gnu.org/software/gdb/documentation/>.
> For help, type "help".
> Type "apropos word" to search for commands related to "word"...
> Reading symbols from identify...(no debugging symbols found)...done.
> (gdb) run -verbose a_depth1.psd
> Starting program: /usr/bin/identify -verbose a_depth1.psd
> [New Thread 19604.0x326c]
> [New Thread 19604.0x3d58]
> [New Thread 19604.0x38ec]
> [New Thread 19604.0x1fe4]
> [New Thread 19604.0x2dd0]
> [New Thread 19604.0x463c]
Waiting and and Ctrl-C!
> 
> Thread 1 received signal SIGINT, Interrupt.
> 0x00000003cebe92d7 in inflate () from /usr/bin/cygz.dll
> (gdb)
> (gdb) quit
> A debugging session is active.
> 
>         Inferior 1 [process 19604] will be killed.
> 
> Quit anyway? (y or n) y
> 

================================
Without -verbose option
--------------------------------

$ gdb identify
GNU gdb (GDB) (Cygwin 7.12.1-2) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-cygwin".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from identify...(no debugging symbols found)...done.
(gdb) run a_depth1.psd
Starting program: /usr/bin/identify a_depth1.psd
[New Thread 13140.0x5bf0]
[New Thread 13140.0x20c8]
[New Thread 13140.0x2e00]
[New Thread 13140.0x5284]
a_depth1.psd[0] PSD 37x27 37x27+0+0 1-bit Grayscale Gray 256c 492B 0.000u 0:00.005
a_depth1.psd[1] PSD 37x27 37x27+0+0 1-bit Gray 256c 492B 0.000u 0:00.005
[Thread 13140.0x2e00 exited with code 0]
[Thread 13140.0x5284 exited with code 0]
[Inferior 1 (process 13140) exited normally]
(gdb) quit

> $ uname -svrm; cygcheck -c ImageMagick zlib zlib0
> CYGWIN_NT-6.1 2.11.1(0.329/5/3) 2018-09-05 10:24 x86_64
> Cygwin Package Information
> Package              Version        Status
> ImageMagick          6.9.9.11-3     OK
> zlib                 1.2.11-1       OK
> zlib0                1.2.11-1       OK

> $ cygcheck -l zlib0
> /usr/bin/cygz.dll


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