> On Nov 26, 2018, at 4:13 AM, Mark Wielaard <m...@klomp.org> wrote:
>
> With -Wtrampolines a warning is produced whenever gcc generates executable
> code on the stack at runtime to support taking a nested function address
> that is used to call the nested function indirectly when it needs to access
> any variables in its lexical scope.
>
> As a result the stack has to be marked as executable even for targets which
> have a non-executable stack as default.
>
> Define a new target macro TARGET_HAS_DEFAULT_NOEXEC_STACK for those targets
> that have a non-executable default stack based on when they call
> file_end_indicate_exec_stack.
The word "default" suggests this is a constant attribute of the platform. Can
it be variable? Whether the stack is executable or not may depend on
-m<something> switches.
paul
