Merge

Lib/threading.py

@@ -1047,21 +1047,18 @@ def _after_fork():
     current = current_thread()
     with _active_limbo_lock:
         for thread in _active.values():
+            # Any lock/condition variable may be currently locked or in an
+            # invalid state, so we reinitialize them.
+            thread._reset_internal_locks()
             if thread is current:
                 # There is only one active thread. We reset the ident to
                 # its new value since it can have changed.
                 ident = get_ident()
                 thread._ident = ident
-                # Any condition variables hanging off of the active thread may
-                # be in an invalid state, so we reinitialize them.
-                thread._reset_internal_locks()
                 new_active[ident] = thread
             else:
                 # All the others are already stopped.
-                # We don't call _Thread__stop() because it tries to acquire
-                # thread._Thread__block which could also have been held while
-                # we forked.
-                thread._stopped = True
+                thread._stop()
 
         _limbo.clear()
         _active.clear()

Lib/urllib/request.py

@@ -1762,7 +1762,6 @@ class URLopener:
 
     def http_error_default(self, url, fp, errcode, errmsg, headers):
         """Default error handler: close the connection and raise IOError."""
-        void = fp.read()
         fp.close()
         raise HTTPError(url, errcode, errmsg, headers, None)
 
@@ -1951,7 +1950,6 @@ class FancyURLopener(URLopener):
             newurl = headers['uri']
         else:
             return
-        void = fp.read()
         fp.close()
 
         # In case the server sent a relative URL, join with original:

Misc/NEWS

@@ -419,6 +419,12 @@ Core and Builtins
 Library
 -------
 
+- Issue #11870: threading: Properly reinitialize threads internal locks and
+  condition variables to avoid deadlocks in child processes.
+
+- Issue #8035: urllib: Fix a bug where the client could remain stuck after a
+  redirection or an error.
+
 - Issue #13560: os.strerror() now uses the current locale encoding instead of
   UTF-8.