nobu	2015-08-13 16:22:10 +0900 (Thu, 13 Aug 2015)

  New Revision: 51564

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=51564

  Log:
    thread.c: freeze masks
    
    * thread.c (rb_thread_s_handle_interrupt, rb_uninterruptible):
      freeze mask hashes.

  Modified files:
    trunk/thread.c
Index: thread.c
===================================================================
--- thread.c	(revision 51563)
+++ thread.c	(revision 51564)
@@ -1835,6 +1835,7 @@ rb_thread_s_handle_interrupt(VALUE self, https://github.com/ruby/ruby/blob/trunk/thread.c#L1835
     if (!mask) {
 	return rb_yield(Qnil);
     }
+    OBJ_FREEZE_RAW(mask);
     rb_ary_push(th->pending_interrupt_mask_stack, mask);
     if (!rb_threadptr_pending_interrupt_empty_p(th)) {
 	th->pending_interrupt_queue_checked = 0;
@@ -5288,6 +5289,7 @@ rb_uninterruptible(VALUE (*b_proc)(ANYAR https://github.com/ruby/ruby/blob/trunk/thread.c#L5289
     rb_thread_t *cur_th = GET_THREAD();
 
     rb_hash_aset(interrupt_mask, rb_cObject, sym_never);
+    OBJ_FREEZE_RAW(interrupt_mask);
     rb_ary_push(cur_th->pending_interrupt_mask_stack, interrupt_mask);
 
     return rb_ensure(b_proc, data, rb_ary_pop, cur_th->pending_interrupt_mask_stack);

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