commit bbd66119148082b2fa66a0aae866693c9abb0f5a
Author: Stefan Kaes <skaes@railsexpress.de>
Date:   Mon Dec 30 10:54:03 2013 +0100

    fix missing c return event

diff --git a/test/ruby/test_settracefunc.rb b/test/ruby/test_settracefunc.rb
index b106ea5..8a128f5 100644
--- a/test/ruby/test_settracefunc.rb
+++ b/test/ruby/test_settracefunc.rb
@@ -1066,4 +1066,19 @@ class TestSetTraceFunc < Test::Unit::TestCase
       :b_return
     ], events)
   end
+
+  def test_const_missing
+    bug59398 = '[ruby-core:59398]'
+    events = []
+    assert !defined?(MISSING_CONSTANT_59398)
+    TracePoint.new(:c_call, :c_return){|tp|
+      events << tp.event if tp.defined_class == Module && tp.method_id == :const_missing
+    }.enable{
+      MISSING_CONSTANT_59398 rescue nil
+    }
+    assert_equal([
+      :c_call,
+      :c_return
+    ], events, bug59398)
+  end
 end
diff --git a/variable.c b/variable.c
index 350bb58..47b7ea6 100644
--- a/variable.c
+++ b/variable.c
@@ -19,6 +19,7 @@
 #include "constant.h"
 #include "internal.h"
 #include "id.h"
+#include "vm_core.h"
 
 st_table *rb_global_tbl;
 static ID autoload, classpath, tmp_classpath, classid;
@@ -1518,6 +1519,8 @@ const_missing(VALUE klass, ID id)
 VALUE
 rb_mod_const_missing(VALUE klass, VALUE name)
 {
+    rb_thread_t *th = GET_THREAD();
+    EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, rb_cModule, idConst_missing, rb_cModule, Qnil);
     rb_frame_pop(); /* pop frame for "const_missing" */
     uninitialized_constant(klass, rb_to_id(name));