Treat the main interpreter specially in resolve_interp().

ericsnowcurrently · ericsnowcurrently · commit cb84c1db26d4 · 2025-10-02T12:04:41.000-06:00
diff --git a/Modules/_interpretersmodule.c b/Modules/_interpretersmodule.c
@@ -755,6 +755,11 @@ resolve_interp(PyObject *idobj, int restricted, int reqready, const char *op)
         }
     }
 
+    if (_Py_IsMainInterpreter(interp)) {
+        assert(_PyInterpreterState_IsReady(interp));
+        return interp;
+    }
+
     if (reqready && !_PyInterpreterState_IsReady(interp)) {
         if (idobj == NULL) {
             PyErr_Format(PyExc_InterpreterError,

Original file line number	Diff line number	Diff line change
`@@ -755,6 +755,11 @@ resolve_interp(PyObject idobj, int restricted, int reqready, const char op)`
`755`	`755`	`}`
`756`	`756`	`}`
`757`	`757`
	`758`	`+ if (_Py_IsMainInterpreter(interp)) {`
	`759`	`+ assert(_PyInterpreterState_IsReady(interp));`
	`760`	`+ return interp;`
	`761`	`+ }`
	`762`	`+`
`758`	`763`	`if (reqready && !_PyInterpreterState_IsReady(interp)) {`
`759`	`764`	`if (idobj == NULL) {`
`760`	`765`	`PyErr_Format(PyExc_InterpreterError,`