Remove the subprocess "bad exception data" warning (formerly a print!)
all together and just include the repr of the data in the exception
itself instead of the useless string "Unknown".
This code path is unlikely to even be possible to take given the
nature of the pipe it gets subprocess data from.
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 18e9ed7..fcc3e6e 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -1371,11 +1371,10 @@
exception_name, hex_errno, err_msg = (
errpipe_data.split(b':', 2))
except ValueError:
- warnings.warn(RuntimeWarning(
- 'Bad exception data: %r' % errpipe_data))
exception_name = b'RuntimeError'
hex_errno = b'0'
- err_msg = b'Unknown'
+ err_msg = (b'Bad exception data from child: ' +
+ repr(errpipe_data))
child_exception_type = getattr(
builtins, exception_name.decode('ascii'),
RuntimeError)