Issue #15300: Ensure the temporary test working directories are in the same parent folder when running tests in multiprocess mode from a Python build.
Patch by Chris Jerdonek.
diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index 46c3ac7..a0e08b7 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -572,10 +572,14 @@
output.put((None, None, None, None))
return
# -E is needed by some tests, e.g. test_import
+ # Running the child from the same working directory ensures
+ # that TEMPDIR for the child is the same when
+ # sysconfig.is_python_build() is true. See issue 15300.
popen = Popen(base_cmd + ['--slaveargs', json.dumps(args_tuple)],
stdout=PIPE, stderr=PIPE,
universal_newlines=True,
- close_fds=(os.name != 'nt'))
+ close_fds=(os.name != 'nt'),
+ cwd=support.SAVEDCWD)
stdout, stderr = popen.communicate()
# Strip last refcount output line if it exists, since it
# comes from the shutdown of the interpreter in the subcommand.