From c7e87b21188386b2e9b9f2c8cf3b6c31ffff46c3 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 23 Jan 2024 01:42:32 +0900
Subject: Fix up [Bug #20001]

---
 thread.c | 2 --
 1 file changed, 2 deletions(-)

(limited to 'thread.c')

diff --git a/thread.c b/thread.c
index 27a6ffb955..9314cd5499 100644
--- a/thread.c
+++ b/thread.c
@@ -639,8 +639,6 @@ void rb_ec_clear_current_thread_trace_func(const rb_execution_context_t *ec);
 static int
 thread_start_func_2(rb_thread_t *th, VALUE *stack_start)
 {
-    STACK_GROW_DIR_DETECTION;
-
     RUBY_DEBUG_LOG("th:%u", rb_th_serial(th));
     VM_ASSERT(th != th->vm->ractor.main_thread);
 
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