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Date: Mon, 9 Feb 2026 16:07:00 +0100
Message-ID: <CAPJSo4VoGnnQBWjdsH2LRsUvXdg0=oV8L3nanGCtA4t=Gxf98g@mail.gmail.com>
Subject: Re: Cygwin 3.7.0 HEAD, posix_spawn() failures on Win10?
To: Dan Shelton <dan DOT f DOT shelton AT gmail DOT com>
Cc: cygwin AT cygwin DOT com
From: Lionel Cons via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Lionel Cons <lionelcons1972 AT gmail DOT com>
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Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>

On Mon, 9 Feb 2026 at 13:23, Dan Shelton via Cygwin <cygwin AT cygwin DOT com> wrote:
>
> On Sat, 31 Jan 2026 at 17:11, Dan Shelton <dan DOT f DOT shelton AT gmail DOT com> wrote:
> >
> > Hello, on Cygwin 3.7.0-0.382.gab4d1afb5e1e.x86_64 on
> > CYGWIN_NT-10.0-19045, is anyone else getting posix_spawn() errors when
> > using clang?
> >
> > I get these errors:
> > 0 [main] clang-21 1687 child_info_fork::abort:
> > \??\C:\cygwin64\bin\cygintl-8.dll: Loaded to different address:
> > parent(0x44D0000) != child(0x1A0000)
> >
> > clang: error: unable to execute command: posix_spawn failed: Resource
> > temporarily unavailable
>
> 7.22AM:
> We updated to cygwin 3.7.0-0.390.gede7cbc9946b.x86_64, the
> posix_spawn() in clang.exe does not work.
>
> Maybe clang is broken?

Try this procedure to rebase all DLLs of all packages:
1. reboot machine
2. open admin terminal, run /usr/bin/rebase-trigger full, close terminal
3. run Cygwin setup.exe, just run it without installing anything. Do not abort!
4. reboot machine

IMO it would be cool if there is a tool which could be called from
powershell or cmd.exe

Lionel

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