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Allow reentrant ctypes OUT construction #9620

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Merged
youknowone merged 1 commit into from
Nov 4, 2026
Merged

Allow reentrant ctypes OUT construction #9620

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11 changes: 6 additions & 5 deletions crates/vm/src/stdlib/_ctypes/function.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1312,11 +1312,12 @@ fn get_buffer_addr(obj: &PyObject) -> Option<usize> {
/// Create OUT buffer for a parameter type
fn create_out_buffer(arg_type: &Py<PyType>, vm: &VirtualMachine) -> PyResult<PyObjectRef> {
// For POINTER(T) types, create T instance (the pointed-to type)
if arg_type.fast_issubclass(PyCPointer::static_type())
&& let Some(stg_info) = arg_type.stg_info_opt()
&& let Some(ref proto) = stg_info.proto
{
return proto.as_object().call((), vm);
if arg_type.fast_issubclass(PyCPointer::static_type()) {
// Constructing the pointed-to type can re-enter pointer type setup.
let proto = arg_type.stg_info_opt().and_then(|info| info.proto.clone());
if let Some(proto) = proto {
return proto.as_object().call((), vm);
}
}
// Not a pointer type or no proto, create instance directly
arg_type.as_object().call((), vm)
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