Collector has a CoverageData

1 files changed, 5 insertions, 1 deletions

diff --git a/coverage/control.py b/coverage/control.py
index cdbd721f..ca0843d7 100644
--- a/coverage/control.py
+++ b/coverage/control.py
@@ -335,6 +335,7 @@ class Coverage(object):
 
     def _init_for_start(self):
         """Initialization for start()"""
+        # Construct the collector.
         concurrency = self.config.concurrency or []
         if "multiprocessing" in concurrency:
             if not patch_multiprocessing:
@@ -400,6 +401,9 @@ class Coverage(object):
                 debug=self._debug,
             )
 
+        if self._collector is not None:
+            self._collector.use_data(self._data)
+
     def start(self):
         """Start measuring code coverage.
 
@@ -564,7 +568,7 @@ class Coverage(object):
         self._init_data(suffix=None)
         self._post_init()
 
-        if self._collector and self._collector.save_data(self._data):
+        if self._collector and self._collector.flush_data():
             self._post_save_work()
 
         return self._data