gistfile1.diff

diff --git a/gc.c b/gc.c
index 415cc70..a570ae3 100644
--- a/gc.c
+++ b/gc.c
@@ -6140,7 +6140,7 @@ gc_profile_total_time(VALUE self)
 
     if (objspace->profile.run && objspace->profile.next_index > 0) {
 	size_t i;
-	size_t count = objspace->profile.next_index - 1;
+	size_t count = objspace->profile.next_index;
 
 	for (i = 0; i < count; i++) {
 	    time += objspace->profile.records[i].gc_time;
diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
index dfe5e31..4218dab 100644
--- a/test/ruby/test_gc.rb
+++ b/test/ruby/test_gc.rb
@@ -166,6 +166,16 @@ class TestGc < Test::Unit::TestCase
     eom
   end
 
+  def test_profiler_total_time
+    GC::Profiler.enable
+    GC::Profiler.clear
+
+    GC.start
+    assert_operator(GC::Profiler.total_time, :>, 0)
+  ensure
+    GC::Profiler.disable
+  end
+
   def test_finalizing_main_thread
     assert_in_out_err(%w[--disable-gems], <<-EOS, ["\"finalize\""], [], "[ruby-dev:46647]")
       ObjectSpace.define_finalizer(Thread.main) { p 'finalize' }