Well, you'd probably want something other than NPE here -- perhaps a new dedicated exception to signal this condition. And this means the segfault handling now needs to know about this type of situation as well, rather than just NPEs.
On Thu, Sep 10, 2015 at 10:32 AM, Andrew Haley <a...@redhat.com> wrote: > On 09/10/2015 03:26 PM, Vitaly Davidovich wrote: > > Yes, so what happens when that guard page is accessed by a thread after > safepoint? > > A segfault and a null pointer exception. > > Andrew. > >