diff options
Diffstat (limited to 'Lib/subprocess.py')
| -rw-r--r-- | Lib/subprocess.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Lib/subprocess.py b/Lib/subprocess.py index 93635ee61f..e070011d98 100644 --- a/Lib/subprocess.py +++ b/Lib/subprocess.py @@ -135,6 +135,19 @@ if _mswindows: self.hStdError = hStdError self.wShowWindow = wShowWindow self.lpAttributeList = lpAttributeList or {"handle_list": []} + + def copy(self): + attr_list = self.lpAttributeList.copy() + if 'handle_list' in attr_list: + attr_list['handle_list'] = list(attr_list['handle_list']) + + return STARTUPINFO(dwFlags=self.dwFlags, + hStdInput=self.hStdInput, + hStdOutput=self.hStdOutput, + hStdError=self.hStdError, + wShowWindow=self.wShowWindow, + lpAttributeList=attr_list) + else: import _posixsubprocess import select @@ -1102,6 +1115,10 @@ class Popen(object): # Process startup details if startupinfo is None: startupinfo = STARTUPINFO() + else: + # bpo-34044: Copy STARTUPINFO since it is modified above, + # so the caller can reuse it multiple times. + startupinfo = startupinfo.copy() use_std_handles = -1 not in (p2cread, c2pwrite, errwrite) if use_std_handles: |