Issue #4687: Fix accuracy of garbage collection runtimes displayed with

gc.DEBUG_STATS.

Misc/NEWS

@@ -31,6 +31,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #4687: Fix accuracy of garbage collection runtimes displayed with
+  gc.DEBUG_STATS.
+
 - Issue #7192: webbrowser.get("firefox") now wors on Mac OS X, as does
   webbrowser.get("safari").
 

Modules/gcmodule.c

@@ -837,13 +837,13 @@ collect(int generation)
 	}
 
 	if (debug & DEBUG_STATS) {
-		t1 = get_time();
 		PySys_WriteStderr("gc: collecting generation %d...\n",
 				  generation);
 		PySys_WriteStderr("gc: objects in each generation:");
 		for (i = 0; i < NUM_GENERATIONS; i++)
 			PySys_WriteStderr(" %" PY_FORMAT_SIZE_T "d",
 					  gc_list_size(GEN_HEAD(i)));
+		t1 = get_time();
 		PySys_WriteStderr("\n");
 	}