takano32	2017-07-10 15:57:50 +0900 (Mon, 10 Jul 2017)

  New Revision: 59307

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=59307

  Log:
    a64: fix crash on register stack mark/sweep pass
    
    * thread_pthread.c: move 'register_stack_start' earlier.
      [ruby-core:79928] [Bug #13284] [Fix GH-1625]
    
    Author:    Sergei Trofimovich <slyfox@g...>

  Modified files:
    trunk/thread_pthread.c
Index: thread_pthread.c
===================================================================
--- thread_pthread.c	(revision 59306)
+++ thread_pthread.c	(revision 59307)
@@ -740,6 +740,12 @@ ruby_init_stack(volatile VALUE *addr https://github.com/ruby/ruby/blob/trunk/thread_pthread.c#L740
     )
 {
     native_main_thread.id = pthread_self();
+#ifdef __ia64
+    if (!native_main_thread.register_stack_start ||
+        (VALUE*)bsp < native_main_thread.register_stack_start) {
+        native_main_thread.register_stack_start = (VALUE*)bsp;
+    }
+#endif
 #if MAINSTACKADDR_AVAILABLE
     if (native_main_thread.stack_maxsize) return;
     {
@@ -763,12 +769,6 @@ ruby_init_stack(volatile VALUE *addr https://github.com/ruby/ruby/blob/trunk/thread_pthread.c#L769
         native_main_thread.stack_start = (VALUE *)addr;
     }
 #endif
-#ifdef __ia64
-    if (!native_main_thread.register_stack_start ||
-        (VALUE*)bsp < native_main_thread.register_stack_start) {
-        native_main_thread.register_stack_start = (VALUE*)bsp;
-    }
-#endif
     {
 #if defined(HAVE_GETRLIMIT)
 #if defined(PTHREAD_STACK_DEFAULT)

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