Removal of unexec support from glibc malloc

[Joseph Myers]

On Mon, 18 Jan 2016, Daniel Colascione wrote:

> On 01/18/2016 11:54 AM, Zack Weinberg wrote:
> > On Mon, Jan 18, 2016 at 2:47 PM, Daniel Colascione <dancol@dancol.org> wrote:
> >>
> >> As long as the ABI support is there, we can keep using the "separate
> >> malloc implementation" even if glibc doesn't cooperate by providing
> >> convenient headers to access it.
> > 
> > Clarification: it will not be possible to link new executables against
> > the symbols in question. (This is what a "compat symbol" in glibc is -
> > available only to existing binaries, not to new invocations of ld.)
> 
> Oh, with a linker script or other hackery, I'm sure I could make it
> available to new invocations of ld. It's just bytes.

Being a compat symbol also means that future architecture ports and ABIs 
don't include the functionality at all.

-- 
Joseph S. Myers
joseph@codesourcery.com