[PATCH v7 2/4] elf: Do not change stack permission on dlopen/dlmopen

[Stafford Horne]

On Mon, Jan 06, 2025 at 12:15:49PM +0100, Florian Weimer wrote:
> * Stafford Horne:
> 
> > I will look to fixing this by seeing if I can get GCC to not need to
> > have an executable stack for libgcc_s.so.1.  But it will mean
> > running new glibc with old gcc installs may have some issues.
> >
> > If you have any suggestions let me know.
> 
> I think the first step is to figure out if libgcc_s.so.1 actually
> needs an executable stack, or if the markup is incorrect.

Yes, thanks, I already figured it out and replied.  I sent the original mail
just in case it was something that may have been overlooked with dloepn patch.

It seems no issue, when building GCC I noticed:

   ld: warning: __modsi3_s.o: missing .note.GNU-stack section implies executable stack
   ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker

This is caused by a file containing a bunch of math builtin's that don't even
use the stack.  So I added the correct .note and the libgcc_s.so.1 no longer
requires the executable stack.

-Stafford