merge revision(s) r45542,r45543: [Backport #9717]

	* gc.c (mark_current_machine_context): Call SET_STACK_END.
	  This reverts a hunk of r40703 by ko1.
	  This fixes [ruby-dev:48098] [Bug #9717].


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47229 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/gc.c b/gc.c
index 5dbf349669..b2d8bfb83e 100644
--- a/gc.c
+++ b/gc.c
@@ -3478,6 +3478,10 @@ mark_current_machine_context(rb_objspace_t *objspace, rb_thread_t *th)
     /* This assumes that all registers are saved into the jmp_buf (and stack) */
     rb_setjmp(save_regs_gc_mark.j);
 
+    /* SET_STACK_END must be called in this function because
+     * the stack frame of this function may contain
+     * callee save registers and they should be marked. */
+    SET_STACK_END;
     GET_STACK_BOUNDS(stack_start, stack_end, 1);
 
     mark_locations_array(objspace, save_regs_gc_mark.v, numberof(save_regs_gc_mark.v));