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bpo-40826: Fix segfaults issue when close file descriptor 0 on REPL #20549

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bpo-40826: Fix segfaults issue when close file descriptor 0 on REPL #20549

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5f02174
bpo-40826: Update PyOS_InterruptOccurred to handle tstate is NULL
corona10 May 31, 2020
9524994
bpo-40826: Update
corona10 May 31, 2020
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15 changes: 15 additions & 0 deletions Lib/test/test_repl.py
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Original file line number Diff line number Diff line change
Expand Up @@ -93,6 +93,21 @@ def test_multiline_string_parsing(self):
output = kill_python(p)
self.assertEqual(p.returncode, 0)

@cpython_only
@unittest.skipIf(sys.platform =="win32", 'Skip Windows')
def test_close_fd_zero(self):
user_input = '''\
import os
os.close(0)
'''
user_input = dedent(user_input)
user_input = user_input.encode()
p = spawn_repl()
with SuppressCrashReport():
p.stdin.write(user_input)
output = kill_python(p)
self.assertEqual(p.returncode, 0)


if __name__ == "__main__":
unittest.main()
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Core and Builtins/2020-05-31-13-57-36.bpo-40826.TKBXAB.rst
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@@ -0,0 +1,2 @@
Fix segfaults issue when close file descriptor 0 on REPL. Patch by Dong-hee
Na.
8 changes: 6 additions & 2 deletions Modules/signalmodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1782,8 +1782,12 @@ PyOS_FiniInterrupts(void)
int
PyOS_InterruptOccurred(void)
{
PyInterpreterState *interp = _PyInterpreterState_GET();
if (!_Py_ThreadCanHandleSignals(interp)) {
PyThreadState *tstate = _PyThreadState_GET();
if (tstate == NULL) {
// FIXME: PyGILState_GetThisThreadState doesn't support subinterpreters.
tstate = PyGILState_GetThisThreadState();
}
if (!_Py_ThreadCanHandleSignals(tstate->interp)) {
return 0;
}

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