PR threads/11692
PR gdb/12203
gdb/
* infrun.c (handle_inferior_event) <new thread>: Don't special
case minus_one_ptid.
<TARGET_WAITKIND_SPURIOUS>: Ditto.
* linux-thread-db.c (thread_get_info_callback): Don't return early
if the thread is zombie.
(thread_from_lwp): Change return type to void. Rewrite stale
comment.
(attach_thread): Don't return early if the thread is zombie,
instead set its "dying" flag.
(thread_db_wait): Don't return TARGET_WAITKIND_SPURIOUS anymore.
(find_new_threads_callback): Don't return early if the thread is
zombie.
gdb/testsuite/
* gdb.threads/create-fail.c: New file.
* gdb.threads/create-fail.exp: New file.