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-rw-r--r--thread_pthread.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/thread_pthread.c b/thread_pthread.c
index 451f47e07f..5c181556b9 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -1052,7 +1052,7 @@ static void *
thread_start_func_1(void *th_ptr)
{
rb_thread_t *th = th_ptr;
- RB_ALTSTACK_INIT(void *altstack, th->altstack);
+ RB_ALTSTACK_INIT(void *altstack, th->nt->altstack);
#if USE_THREAD_CACHE
thread_start:
#endif
@@ -1208,7 +1208,7 @@ native_thread_create(rb_thread_t *th)
const size_t space = space_size(stack_size);
#ifdef USE_SIGALTSTACK
- th->altstack = rb_allocate_sigaltstack();
+ th->nt->altstack = rb_allocate_sigaltstack();
#endif
th->ec->machine.stack_maxsize = stack_size - space;