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Date: Wed, 31 Jan 2024 15:27:02 -0700
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Subject: Re: Aren't Windows System Error popups meant to be disabled in Cygwin?
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From: Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
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On 2024-01-31 06:40, David Allsopp via Cygwin wrote:
> Starting with this very trivial C program:
> 
> #include <stdio.h>
> #include <zstd.h>
> 
> int main(void) {
>    printf("Zstandard v%d\n", ZSTD_versionNumber());
> }
> 
> and compiling with
> 
> x86_64-w64-mingw32-gcc -o test.exe test.c -lzstd
> 
> when I then run ./test.exe, I get the Windows critical-error-handler
> dialog stating "The code execution cannot proceed because
> libzstd-1.dll was not found. Reinstalling the program may fix this
> problem."
> 
> My question is not how to fix the problem (I'm well aware of that),
> but rather why that message is being displayed at all, and is it a bug
> in Cygwin somewhere? All I could find Googling was previous
> suggestions that Cygwin routinely calls SetErrorMode with, amongst
> other things, SEM_FAILCRITICALERRORS with the intention of suppressing
> this dialog.
> 
> Is that correct, and if so is this just me? :o)
> 
> Windows 10 22H2, Cygwin 3.4.10, running all the commands from mintty.
> I also get the same popup if I run C:\cygwin64\bin\sh -c
> "/cygdrive/c/path/to/test" either from a Command Prompt or even from
> "Start -> Run". Running this via "sh" called from a non-Cygwin process
> (itself invoked from a Command Prompt) which has also called
> SetErrorMode is how I hit this.

Better to let you know that there is a problem, and what the problem is, so you 
can fix it!
I have spent hours trying to track down initialization failures, when daemons 
just ignored that a library they needed was not found or loaded!

Install the following package:

$ cygcheck -f /usr/x86_64-w64-mingw32/sys-root/mingw/bin/libzstd-1.dll
mingw64-x86_64-zstd-1.5.5-1
-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry


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