Re: gcc-multilib and libc

[Adhemerval Zanella <adhemerval.zanella@linaro.org>]

On 03/05/2022 07:56, ANA ALMARZA via Libc-help wrote:
> 
> Hi:
> 
>  
> 
> I’ve installed Debian 11 and gcc-multilib to run my old 32bits application but for some extrange reason esc key doesn’t work. If you press it, even if you don’t need it, the application gets blocked and cursor is up and down with no end.
> 
>  
> 
> If I don’t intall gcc-multilib and copy ld-linux.so.2 to /lib and libm.so.6 -> libm-2.22.so and libc.so.6-> libc-2.22.so to /lib32 the application works perfect.
> 

Which glibc version is installed by gcc-multilib? Is there any debian local
patch applied? Is the glibc 2.22 you are using compiled from source or does
it come from a older debian?

>  
> 
> Is there a way to fix this? Should I consider no to use this application in a short term? We use this app every day and we need it ☹

Does it work with glibc master or at least 2.35?

> 
>  
> 
> If I run file /bin/pragma:
> 
> /bin/pragma: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux 2.2.5, stripped
> 
>  
> 
> If I run ldd /bin/pragma:
> 
> linux-gate.so.1 (0xf7fb1000)
> 
>         libm.so.6 => /lib/libm.so.6 (0xf7f4a000)
> 
>         libc.so.6 => /lib/libc.so.6 (0xf7d9d000)
> 
>         /lib/ld-linux.so.2 (0xf7fb3000)
> 
>  
> 
> Regards.

Is is hard to understand what might be happening without any information on what
the program does exactly.  Which libc function does it call? What strace shows?
If you may provide a test example, it would be also very helpful.