Fix macOS null pointer dereference
Commit Message
Saagar, could you give this a try?
<https://sourceware.org/bugzilla/show_bug.cgi?id=22960#c4> reports
that macOS gdb crashes with a null pointer dereference in
push_target(struct target_ops *). This commit fixes that.
The problem is that commit f6ac5f3d63e0 ("Convert struct target_ops to
C++") left the darwin_ops global uninitialized.
We don't need that global anymore, we can use the (new)
get_native_target function instead for the same effect.
gdb/ChangeLog:
yyyy-mm-dd Pedro Alves <palves@redhat.com>
* darwin-nat.c (darwin_ops): Delete.
(darwin_attach_pid): Use get_native_target.
---
gdb/darwin-nat.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
Comments
On 05/24/2018 01:44 PM, Pedro Alves wrote:
> Saagar, could you give this a try?
I've merged this, given the discussion on the bug.
Thanks,
Pedro Alves
Great, that’s one less thing we need to worry about now.
Saagar Jha
> On Jun 4, 2018, at 04:32, Pedro Alves <palves@redhat.com> wrote:
>
> On 05/24/2018 01:44 PM, Pedro Alves wrote:
>> Saagar, could you give this a try?
>
> I've merged this, given the discussion on the bug.
>
> Thanks,
> Pedro Alves
@@ -97,9 +97,6 @@ static void darwin_deallocate_exception_ports (darwin_inferior *inf);
static void darwin_setup_exceptions (struct inferior *inf);
static void darwin_deallocate_threads (struct inferior *inf);
-/* Target operations for Darwin. */
-static struct target_ops *darwin_ops;
-
/* Task identifier of gdb. */
static task_t gdb_task;
@@ -1656,6 +1653,7 @@ darwin_attach_pid (struct inferior *inf)
darwin_setup_exceptions (inf);
+ target_ops *darwin_ops = get_native_target ();
if (!target_is_pushed (darwin_ops))
push_target (darwin_ops);
}