IBM MQ client application fails on latest cygwin

[Takashi Yano]

On Tue, 6 Apr 2021 15:16:56 +0200
Morten Kjærulff wrote:
> I have a non-cygwin IBM MQSeries client application which I call from
> a script. It connects to my z/OS MQ server.
> 
> When I run it from a windows command prompt, it works fine.
> 
> When I run it from mintty, it fails in a strange way.
> On my PC I see
> 2539 (09EB) (RC2539): MQRC_CHANNEL_CONFIG_ERROR
> On z/OS I see
> CSQX575E QMGR CSQXRESP Negotiation failed for channel
> CSQX228E QMGR CSQXRESP Listener unable to start channel,
> channel ????
> TRPTYPE=TCP INDISP=QMGR
> So it seems some garbage has been sent.
> 
> Installing old versions of mintty gives the same result.
> 
> Installing an old version of cygwin seems to resolve the issue:
> 3.2.0-1 fail
> 3.1.7-1 fine
> 
> How can I help?

Could you please try the followings and let me know
the results?

1) Execute 'cmd /c bash' in mintty and run MQ clint.
2) Run cygwin in command prompt and execute 'script', then run MQ client.

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>