Steve Dower <steve.do...@python.org> added the comment:
This looks like the smallest change I can make to fix it:
diff --git a/Include/internal/pycore_pystate.h
b/Include/internal/pycore_pystate.h
index 0cd5550cfd..9ff740b87b 100644
--- a/Include/internal/pycore_pystate.h
+++ b/Include/internal/pycore_pystate.h
@@ -34,7 +34,11 @@ _Py_IsMainInterpreter(PyThreadState* tstate)
static inline int
_Py_ThreadCanHandleSignals(PyInterpreterState *interp)
{
+#ifndef MS_WINDOWS
return (_Py_IsMainThread() && interp == _PyRuntime.interpreters.main);
+#else
+ return (interp == _PyRuntime.interpreters.main);
+#endif
}
I'll need Victor(?) to confirm whether checking for the main interpreter is
sufficient. We're calling this from a new thread that AFAICT never holds the
GIL, and we pass the main interpreter in explicitly (from trip_signal) so this
check always succeeds (here, but not necessarily in other places where it is
called).
----------
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue42296>
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