[lld] r254003 - Revert "ELF: Make .note.GNU-stack more compatible with traditional linkers."

[Rui Ueyama via llvm-commits]

On Tue, Nov 24, 2015 at 2:37 PM, Joerg Sonnenberger via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> On Tue, Nov 24, 2015 at 02:23:34PM -0800, Rui Ueyama wrote:
> > Omitting PT_GNU_STACK when -z execstack is provided is easy, but it leads
> > to a counter-intuitive behavior on platforms that do not recognize
> > PT_GNU_STACK and stack is not executable by default. (You need to pass -z
> > execstack to make it run on such platforms, but it wouldn't make the
> stack
> > executable.)
>
> That argument makes no sense to me and I am not even sure I understand
> it correctly. A platform (like NetBSD) that doesn't recognize
> PT_GNU_STACK and provides a non-executable stack by default will not be
> affected at all. Yes, it won't do what is intended, but it is no worse
> than the current situation of creating a bogus program header either.
>

Let me rephrase. That you needs to pass "-z execstack" (although you don't
intend to make the stack executable) to make the output compatible with a
platform that rejects executables with PT_GNU_STACK is I think
counter-intuitive.


> Joerg
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