ext/stackprof/stackprof.c in stackprof-0.2.14 vs ext/stackprof/stackprof.c in stackprof-0.2.15

@@ -282,10 +282,12 @@
     rb_hash_aset(results, sym_samples, SIZET2NUM(_stackprof.overall_samples));
     rb_hash_aset(results, sym_gc_samples, SIZET2NUM(_stackprof.during_gc));
     rb_hash_aset(results, sym_missed_samples, SIZET2NUM(_stackprof.overall_signals - _stackprof.overall_samples));
     rb_hash_aset(results, sym_metadata, _stackprof.metadata);
 
+    _stackprof.metadata = Qnil;
+
     frames = rb_hash_new();
     rb_hash_aset(results, sym_frames, frames);
     st_foreach(_stackprof.frames, frame_i, (st_data_t)frames);
 
     st_free_table(_stackprof.frames);
@@ -651,9 +653,12 @@
 }
 
 static void
 stackprof_gc_mark(void *data)
 {
+    if (RTEST(_stackprof.metadata))
+	rb_gc_mark(_stackprof.metadata);
+
     if (RTEST(_stackprof.out))
 	rb_gc_mark(_stackprof.out);
 
     if (_stackprof.frames)
 	st_foreach(_stackprof.frames, frame_mark_i, 0);