Index: Lib/socket.py
===================================================================
--- Lib/socket.py	(révision 87761)
+++ Lib/socket.py	(copie de travail)
@@ -130,7 +130,13 @@
         For IP sockets, the address info is a pair (hostaddr, port).
         """
         fd, addr = self._accept()
-        return socket(self.family, self.type, self.proto, fileno=fd), addr
+        sock = socket(self.family, self.type, self.proto, fileno=fd)
+        # Issue #7995: if no default timeout is set and the listening
+        # socket had a (non-zero) timeout, force the new socket in blocking
+        # mode to override platform-specific socket flags inheritance.
+        if getdefaulttimeout() is None and self.gettimeout():
+            sock.setblocking(True)
+        return sock, addr
 
     def makefile(self, mode="r", buffering=None, *,
                  encoding=None, errors=None, newline=None):
Index: Lib/test/test_socket.py
===================================================================
--- Lib/test/test_socket.py	(révision 87761)
+++ Lib/test/test_socket.py	(copie de travail)
@@ -982,6 +982,23 @@
         def _testInitNonBlocking(self):
             pass
 
+    def testInheritFlags(self):
+        # Issue #7995: when calling accept() on a listening socket with a
+        # timeout, the resulting socket should not be non-blocking.
+        self.serv.settimeout(10)
+        try:
+            conn, addr = self.serv.accept()
+            message = conn.recv(len(MSG))
+        finally:
+            conn.close()
+            self.serv.settimeout(None)
+
+    def _testInheritFlags(self):
+        time.sleep(0.1)
+        self.cli.connect((HOST, self.port))
+        time.sleep(0.5)
+        self.cli.send(MSG)
+
     def testAccept(self):
         # Testing non-blocking accept
         self.serv.setblocking(0)