Ensure GC_StackContext_Rep object allocated in GC_new_thread is marked

(fix of commit 7eb49a4e6)

Issue #362 (bdwgc).

The current stack is not scanned until the thread is registered, thus
crtn pointer (to a newly allocated GC_StackContext_Rep object) is to
be retained in the global data roots for a while (and pushed explicitly
if a collection occurs during GC_Thread_Rep object allocation).

* pthread_support.c (saved_crtn): New static variable.
* pthread_support.c (GC_push_thread_structures): Push saved_crtn
symbol.
* pthread_support.c (GC_new_thread): Store crtn to saved_crtn before
allocation of GC_thread object and set saved_crtn back to null after
the allocation; add comment.

0 files changed, 0 insertions, 0 deletions