[Bug sanitizer/87875] Address sanitizer doen't work with nested functions with enabled stack-use-after-return check

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87875

--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #7)
> Not also sure what happens if the executable and libraries don't need
> executable stack and you later dlopen some shared library that needs it
> (e.g. uses nested functions).  Don't remember if ld.so mprotects the main
> stack as well as all others.

Uff, looks complicated. I've just attached patch that greps for '[stack]' and
reads execute flags..