[Bug ld/29072] ld silently make the program stack area executable if nested function is used

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29072

--- Comment #14 from Nick Clifton <nickc at redhat dot com> ---

(In reply to H.J. Lu from comment #12)
> I don't think we should issue a warning in this case:

Why not ?  The original point of this PR was that an application can
gain an executable stack without the programmer being aware of it, simply
because an object file in the link requests one.  Providing a warning,
along with the name of the object file to blame, will allow the builder
to decide if they are OK with this, possibly unexpected, behaviour.


> Shouldn't compiler issue the warning instead?

Maybe - that is up to the compiler designers.  But the purpose of this
warning is to let application builders know that their app now has a
major security risk, and it may be because of an object file in a library
and nothing at all to do with files that they themselves maintain.

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