Re: executable stack in gcc shared libs?

[Andrew Haley]

Paweł Sikora wrote:
> Hi all,
> 
> I noticed (readelf -lW/grep) that some gcc libraries require executable stack:
> 
> /usr/lib64/libffi.so.4.0.1 GNU_STACK      0x000000 0x0000000000000000
>                            0x0000000000000000 0x000000 0x000000 RWE 0x8
> /usr/lib64/libgcj.so.8.0.0 GNU_STACK      0x000000 0x0000000000000000
>                            0x0000000000000000 0x000000 0x000000 RWE 0x8
> /usr/lib64/libgmp.so.3.4.2 GNU_STACK      0x000000 0x0000000000000000
>                            0x0000000000000000 0x000000 0x000000 RWE 0x8
> 
> Is this expected marking or just missed `-z noexecstack` for assembly parts?

I don't know for sure about libgmp, but the others don't need execstack.

Andrew.