Mail Archives: cygwin/2024/03/01/12:49:26

Kate Deplaix via Cygwin <cygwin AT cygwin DOT com> · Fri, 1 Mar 2024 17:48:52 +0000

Hi,

Using cygwin 3.6.0-0.66.gc77a5689f7bd I was indeed unable to reproduce the issue.
However I'm getting a related but slightly different issue now, where a subprocess randomly (but quite reliably over the whole compilation process) fails with make -j (works fine with -j1 once again)

Luckily i was able to make a really small test-case this time:
Using MinGW 11.4.0 with the following test.c file:

#define UNICODE
#define _UNICODE

#include <process.h>
#include <stdio.h>

int main() {
  int ret = _wsystem(L"x86_64-w64-mingw32-gcc -dumpversion");
  if(ret != 0) printf("FOUND %d\n", ret);
}

compile using: x86_64_w64-mingw32-gcc ./test.c
and run using: for i in $(seq 1 100) ; do ./a & done

You should now be able to see at least one FOUND line among the output.

This exact behaviour happens to me everytime I try to compile the OCaml compiler, where a gcc subprocess fails inexplicably.

We've been getting this kind of error once in a while over the years (locally and in CI) but it was never reproducible to this point and it was usually fine if we restarted the compilation.

Kind regards,
________________________________
From: Cygwin <cygwin-bounces+kit-ty-kate=outlook DOT com AT cygwin DOT com> on behalf of David Allsopp via Cygwin <cygwin AT cygwin DOT com>
Sent: 01 March 2024 15:26
To: Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
Cc: cygwin AT cygwin DOT com <cygwin AT cygwin DOT com>
Subject: Re: Regression: Cygwin 3.5.1 freezes when launching several mingw processes in parallel

On Fri, 1 Mar 2024 at 08:03, Takashi Yano via Cygwin <cygwin AT cygwin DOT com> wrote:
> Please try: cygwin 3.6.0-0.66.gc77a5689f7bd (TEST)

I can confirm this fixes the issue for me, thank you!

David

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To:	Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>, David Allsopp <david AT tarides DOT com>
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Subject:	Re: Regression: Cygwin 3.5.1 freezes when launching several mingw
	processes in parallel
Thread-Topic:	Regression: Cygwin 3.5.1 freezes when launching several mingw
	processes in parallel
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Date:	Fri, 1 Mar 2024 17:48:52 +0000
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From:	Kate Deplaix via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Kate Deplaix <kit-ty-kate AT outlook DOT com>
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