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Date: Fri, 21 Feb 2025 12:48:52 +0100
To: cygwin@cygwin.com
Subject: Re: cygwin 3.6.0 vs. libbsd 0.11.7-3: -lbsd breaks setproctitle()
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From: Corinna Vinschen via Cygwin <cygwin@cygwin.com>
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Cc: Corinna Vinschen <corinna-cygwin@cygwin.com>
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On Feb 21 12:15, Christian Franke via Cygwin wrote:
> Corinna Vinschen via Cygwin wrote:
> > ...
> > 
> > I just deployed 0.12.2-2 as test.  Apart from setproctitle{_init}, it
> > also drops exporting the following symbols already exported from Cygwin:
> > 
> >      arc4random*
> >      explicit_bzero
> >      fpurge
> >      getprogname
> >      reallocarray
> >      reallocf
> >      setprogname
> >      strlcat
> >      strlcpy
> >      strnstr
> >      wcslcat
> >      wcslcpy
> > 
> > Given cygbsd-0.dll still defines these functions, it should still work
> > with older executables.
> 
> It does, at least with the subset used by stress-ng. A rebuild links and
> runs as expected:
> 
> Build with libbsd 0.11.7-3:
> 
>         DLL Name: cygbsd-0.dll
>         vma:     Ordinal  Hint  Member-Name  Bound-To
>         00b9d480  <none>  000a  arc4random
>         00b9d488  <none>  0022  heapsort
>         00b9d490  <none>  0025  mergesort
>         00b9d498  <none>  002e  radixsort
>         00b9d4a0  <none>  0034  setproctitle
>         00b9d4a8  <none>  0035  setproctitle_init
>         00b9d4b0  <none>  003f  strlcat
>         00b9d4b8  <none>  0040  strlcpy
>         00b9d4c0  <none>  005d  wcslcat
>         00b9d4c8  <none>  005e  wcslcpy
> 
> 
> Build with libbsd 0.12.2-2:
> 
>         DLL Name: cygbsd-0.dll
>         vma:     Ordinal  Hint  Member-Name  Bound-To
>         00ba1490  <none>  0021  heapsort
>         00ba1498  <none>  0024  mergesort
>         00ba14a0  <none>  002d  radixsort
> 
>         DLL Name: cygwin1.dll
>         ...
>         00ba1610  <none>  00c5  arc4random
>         ...
>         00ba20d0  <none>  0544  setproctitle
>         ...
>         00ba22b8  <none>  05b1  strlcat
>         00ba22c0  <none>  05b2  strlcpy
>         ...
>         00ba24c8  <none>  067b  wcslcat
>         00ba24d0  <none>  067c  wcslcpy

Cool, thanks for testing!


Corinna

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