Re: php73 build failure

[maya%NetBSD.org@localhost]

On Tue, Oct 15, 2019 at 01:27:37PM +0200, Thomas Klausner wrote:
> On Tue, Oct 15, 2019 at 11:21:16AM +0000, maya%NetBSD.org@localhost wrote:
> > Hi wiz, here's a standalone repro.
> > Not many packages use ifuncs.
> 
> Neat, thanks!
> 
> Is this a gcc/ld bug?
>  Thomas

As background:

relro:
resolve all the relocations immediately, mark the table read-only

ifunc:
on your first attempt to run this function, first run the resolver,
decide which function it should resolve to*, then run that function.

* This means modifying the relocation table, which is read-only.
This segfaults.

So, it's entirely in ld.so's interpretation of what bind now and ifunc
mean, but what's the correct way to handle this scenario?