commit a58e2c5c4928ae8031ee60a97f2ab4f863aff8cb
author Victor Stinner <victor.stinner@gmail.com> Fri May 20 12:08:12 2016 +0200
committer Victor Stinner <victor.stinner@gmail.com> Fri May 20 12:08:12 2016 +0200
tree 71c839803a4015defda1381fdde2980da720cbcf
parent 7438c612ab02f9dd5c58fef687a5eb4671dfa18c

Issue #26741: POSIX implementation of subprocess.Popen._execute_child() now
sets the returncode attribute using the child process exit status when exec
failed.

Lib/subprocess.py

diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 642c7f2..41a9de1 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -1524,9 +1524,14 @@
 
             if errpipe_data:
                 try:
-                    os.waitpid(self.pid, 0)
+                    pid, sts = os.waitpid(self.pid, 0)
+                    if pid == self.pid:
+                        self._handle_exitstatus(sts)
+                    else:
+                        self.returncode = sys.maxsize
                 except ChildProcessError:
                     pass
+
                 try:
                     exception_name, hex_errno, err_msg = (
                             errpipe_data.split(b':', 2))