Merged revisions 78641 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r78641 | victor.stinner | 2010-03-04 01:10:12 +0100 (jeu., 04 mars 2010) | 3 lines

  Issue #7494: fix a crash in _lsprof (cProfile) after clearing the profiler,
  reset also the pointer to the current pointer context.
........

Misc/NEWS

@@ -21,6 +21,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #7494: fix a crash in _lsprof (cProfile) after clearing the profiler,
+  reset also the pointer to the current pointer context.
+
 - Issue #4961: Inconsistent/wrong result of askyesno function in tkMessageBox
   with Tcl/Tk-8.5.
 

Modules/_lsprof.c

@@ -303,12 +303,17 @@ static void clearEntries(ProfilerObject *pObj)
 {
 	RotatingTree_Enum(pObj->profilerEntries, freeEntry, NULL);
 	pObj->profilerEntries = EMPTY_ROTATING_TREE;
-	/* release the memory hold by the free list of ProfilerContexts */
+	/* release the memory hold by the ProfilerContexts */
+	if (pObj->currentProfilerContext) {
+		free(pObj->currentProfilerContext);
+		pObj->currentProfilerContext = NULL;
+	}
 	while (pObj->freelistProfilerContext) {
 		ProfilerContext *c = pObj->freelistProfilerContext;
 		pObj->freelistProfilerContext = c->previous;
 		free(c);
 	}
+	pObj->freelistProfilerContext = NULL;
 }
 
 static void