odaira	2016-03-05 03:14:18 +0900 (Sat, 05 Mar 2016)

  New Revision: 54000

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=54000

  Log:
    * thread_pthread.c (getstack): __pi_stacksize returned by
      pthread_getthrds_np() is wrong on AIX. Use
      __pi_stackend - __pi_stackaddr instead.

  Modified files:
    trunk/ChangeLog
    trunk/thread_pthread.c
Index: thread_pthread.c
===================================================================
--- thread_pthread.c	(revision 53999)
+++ thread_pthread.c	(revision 54000)
@@ -619,7 +619,10 @@ get_stack(void **addr, size_t *size) https://github.com/ruby/ruby/blob/trunk/thread_pthread.c#L619
 				   &thinfo, sizeof(thinfo),
 				   &reg, &regsiz));
     *addr = thinfo.__pi_stackaddr;
-    *size = thinfo.__pi_stacksize;
+    /* Must not use thinfo.__pi_stacksize for size.
+       It is around 3KB smaller than the correct size
+       calculated by thinfo.__pi_stackend - thinfo.__pi_stackaddr. */
+    *size = thinfo.__pi_stackend - thinfo.__pi_stackaddr;
     STACK_DIR_UPPER((void)0, (void)(*addr = (char *)*addr + *size));
 #elif defined __HAIKU__
     thread_info info;
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 53999)
+++ ChangeLog	(revision 54000)
@@ -1,3 +1,9 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Sat Mar  5 03:07:40 2016  Rei Odaira  <Rei.Odaira@g...>
+
+	* thread_pthread.c (getstack): __pi_stacksize returned by
+	  pthread_getthrds_np() is wrong on AIX. Use
+	  __pi_stackend - __pi_stackaddr instead.
+
 Fri Mar  4 19:19:42 2016  Koichi Sasada  <ko1@a...>
 
 	* gc.c: use 2 bits with unsigned int for rb_objspace::flags::mode

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