x86_64 ldd hangs running on a DLL

[Brian Inglis]

BLODA? https://cygwin.com/faq/faq.html#faq.using.bloda

On 2023-05-21 14:32, Jon Turney via Cygwin-apps wrote:
> On 18/05/2023 02:46, Rodney Brown via Cygwin wrote:
>> $ uname -a
>> CYGWIN_NT-10.0-19045 X 3.4.6-1.x86_64 2023-02-14 13:23 UTC x86_64 Cygwin
>> $ ldd --version
>> ldd (cygwin) 3.4.6
>>
>> As with "ldd freezes" 
>> https://sourceware.org/legacy-ml/cygwin/2015-07/msg00314.html , cygcheck works,
>> not only for Cygwin DLLs and ldd hangs needing the xterm to be closed, though 
>> it can interrupted when run
>> under strace, or did. Strace now is segfaulting.
> 
> What changed to make it start segfaulting?
> 
>> Did Corinna's fix for i686 not end up in the x86_64 code?
> 
> The claim here seems to be: ldd is broken on x86_64 for all dlls, and has been 
> since 2015, and nobody has noticed.
> 
> While possible, this seems unlikely.
> 
> All I can tell you is that it appears to WFM.  Perhaps you can provide some more 
> details?
> 
>> $ ldd /usr/bin/cygwin1.dll
>>         ntdll.dll => /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll (0x7ffe56090000)
>>         KERNEL32.DLL => /cygdrive/c/WINDOWS/System32/KERNEL32.DLL 
>> (0x7ffe54a90000)
>>         KERNELBASE.dll => /cygdrive/c/WINDOWS/System32/KERNELBASE.dll 
>> (0x7ffe53c40000)
>>         msvcrt.dll => /cygdrive/c/WINDOWS/System32/msvcrt.dll (0x7ffe55750000)
>>         advapi32.dll => /cygdrive/c/WINDOWS/System32/advapi32.dll 
>> (0x7ffe54d90000)
>>         sechost.dll => /cygdrive/c/WINDOWS/System32/sechost.dll (0x7ffe549b0000)
>>         RPCRT4.dll => /cygdrive/c/WINDOWS/System32/RPCRT4.dll (0x7ffe55570000)
>>         CRYPTBASE.DLL => /cygdrive/c/WINDOWS/SYSTEM32/CRYPTBASE.DLL 
>> (0x7ffe53060000)
>>         bcryptPrimitives.dll => 
>> /cygdrive/c/WINDOWS/System32/bcryptPrimitives.dll (0x7ffe53770000)
> 

-- 
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