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Issue #8766: Initialize _warnings module before importing the first module.

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Fix a crash if an empty directory called "encodings" exists in sys.path.
This commit is contained in:
Victor Stinner 2010-05-19 20:40:50 +00:00
parent 5b08b4d230
commit 7d79b8b771
4 changed files with 36 additions and 13 deletions
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40
Lib/test/test_warnings.py
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@ -738,20 +738,38 @@ class PyEnvironmentVariableTests(EnvironmentVariableTests):
module = py_warnings
class BootstrapTest(unittest.TestCase):
def test_issue_8766(self):
# "import encodings" emits a warning whereas the warnings is not loaded
# or not completly loaded (warnings imports indirectly encodings by
# importing linecache) yet
with support.temp_cwd() as cwd, support.temp_cwd('encodings'):
env = os.environ.copy()
env['PYTHONPATH'] = cwd
# encodings loaded by initfsencoding()
retcode = subprocess.call([sys.executable, '-c', 'pass'], env=env)
self.assertEqual(retcode, 0)
# Use -W to load warnings module at startup
retcode = subprocess.call(
[sys.executable, '-c', 'pass', '-W', 'always'],
env=env)
self.assertEqual(retcode, 0)
def test_main():
py_warnings.onceregistry.clear()
c_warnings.onceregistry.clear()
support.run_unittest(CFilterTests,
PyFilterTests,
CWarnTests,
PyWarnTests,
CWCmdLineTests, PyWCmdLineTests,
_WarningsTests,
CWarningsDisplayTests, PyWarningsDisplayTests,
CCatchWarningTests, PyCatchWarningTests,
CEnvironmentVariableTests,
PyEnvironmentVariableTests
)
support.run_unittest(
CFilterTests, PyFilterTests,
CWarnTests, PyWarnTests,
CWCmdLineTests, PyWCmdLineTests,
_WarningsTests,
CWarningsDisplayTests, PyWarningsDisplayTests,
CCatchWarningTests, PyCatchWarningTests,
CEnvironmentVariableTests, PyEnvironmentVariableTests,
BootstrapTest,
)
if __name__ == "__main__":