merge revision(s) 51713: [Backport #11492]

	* vm.c (hook_before_rewind): prevent kicking :return event while
	  finishing vm_exec func because invoke_block_from_c() kick a :return
	  event for bmethods.
	  [Bug #11492]

	* test/ruby/test_settracefunc.rb: add a test.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@52308 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 4 deletions

diff --git a/vm.c b/vm.c
index 4ed901659c..32145ce08b 100644
--- a/vm.c
+++ b/vm.c
@@ -1294,7 +1294,7 @@ vm_frametype_name(const rb_control_frame_t *cfp)
 #endif
 
 static void
-hook_before_rewind(rb_thread_t *th, rb_control_frame_t *cfp)
+hook_before_rewind(rb_thread_t *th, rb_control_frame_t *cfp, int will_finish_vm_exec)
 {
     switch (VM_FRAME_TYPE(th->cfp)) {
       case VM_FRAME_MAGIC_METHOD:
@@ -1305,7 +1305,13 @@ hook_before_rewind(rb_thread_t *th, rb_control_frame_t *cfp)
       case VM_FRAME_MAGIC_LAMBDA:
 	if (VM_FRAME_TYPE_BMETHOD_P(th->cfp)) {
 	    EXEC_EVENT_HOOK(th, RUBY_EVENT_B_RETURN, th->cfp->self, 0, 0, Qnil);
-	    EXEC_EVENT_HOOK_AND_POP_FRAME(th, RUBY_EVENT_RETURN, th->cfp->self, th->cfp->me->called_id, th->cfp->me->klass, Qnil);
+
+	    if (!will_finish_vm_exec) {
+		/* kick RUBY_EVENT_RETURN at invoke_block_from_c() for bmethod */
+		EXEC_EVENT_HOOK_AND_POP_FRAME(th, RUBY_EVENT_RETURN, th->cfp->self,
+					      th->cfp->me->called_id,
+					      th->cfp->me->klass, Qnil);
+	    }
 	}
 	else {
 	    EXEC_EVENT_HOOK_AND_POP_FRAME(th, RUBY_EVENT_B_RETURN, th->cfp->self, 0, 0, Qnil);
@@ -1486,7 +1492,7 @@ vm_exec(rb_thread_t *th)
 			if (!catch_iseqval) {
 			    th->errinfo = Qnil;
 			    result = GET_THROWOBJ_VAL(err);
-			    hook_before_rewind(th, th->cfp);
+			    hook_before_rewind(th, th->cfp, TRUE);
 			    vm_pop_frame(th);
 			    goto finish_vme;
 			}
@@ -1629,7 +1635,7 @@ vm_exec(rb_thread_t *th)
 	}
 	else {
 	    /* skip frame */
-	    hook_before_rewind(th, th->cfp);
+	    hook_before_rewind(th, th->cfp, FALSE);
 
 	    if (VM_FRAME_TYPE_FINISH_P(th->cfp)) {
 		vm_pop_frame(th);