Remove subclass type flags

bschoenmaeckers · bschoenmaeckers · commit 4e4f7df6bd26 · 2026-05-06T16:35:21.000+02:00
diff --git a/crates/capi/src/object.rs b/crates/capi/src/object.rs
@@ -2,16 +2,7 @@ use crate::PyObject;
 use crate::pystate::with_vm;
 use core::ffi::{c_int, c_uint, c_ulong};
 use rustpython_vm::builtins::PyType;
-use rustpython_vm::{AsObject, Context, Py};
-
-const PY_TPFLAGS_LONG_SUBCLASS: u32 = 1 << 24;
-const PY_TPFLAGS_LIST_SUBCLASS: u32 = 1 << 25;
-const PY_TPFLAGS_TUPLE_SUBCLASS: u32 = 1 << 26;
-const PY_TPFLAGS_BYTES_SUBCLASS: u32 = 1 << 27;
-const PY_TPFLAGS_UNICODE_SUBCLASS: u32 = 1 << 28;
-const PY_TPFLAGS_DICT_SUBCLASS: u32 = 1 << 29;
-const PY_TPFLAGS_BASE_EXC_SUBCLASS: u32 = 1 << 30;
-const PY_TPFLAGS_TYPE_SUBCLASS: u32 = 1 << 31;
+use rustpython_vm::{AsObject, Py};
 
 pub type PyTypeObject = Py<PyType>;
 
@@ -31,39 +22,8 @@ pub unsafe extern "C" fn Py_IS_TYPE(op: *mut PyObject, ty: *mut PyTypeObject) ->
 
 #[unsafe(no_mangle)]
 pub unsafe extern "C" fn PyType_GetFlags(ptr: *const PyTypeObject) -> c_ulong {
-    let ctx = Context::genesis();
-    let zoo = &ctx.types;
-    let exp_zoo = &ctx.exceptions;
-
     let ty = unsafe { &*ptr };
-    let mut flags = ty.slots.flags.bits() as u32;
-
-    if ty.is_subtype(zoo.int_type) {
-        flags |= PY_TPFLAGS_LONG_SUBCLASS;
-    }
-    if ty.is_subtype(zoo.list_type) {
-        flags |= PY_TPFLAGS_LIST_SUBCLASS
-    }
-    if ty.is_subtype(zoo.tuple_type) {
-        flags |= PY_TPFLAGS_TUPLE_SUBCLASS;
-    }
-    if ty.is_subtype(zoo.bytes_type) {
-        flags |= PY_TPFLAGS_BYTES_SUBCLASS;
-    }
-    if ty.is_subtype(zoo.str_type) {
-        flags |= PY_TPFLAGS_UNICODE_SUBCLASS;
-    }
-    if ty.is_subtype(zoo.dict_type) {
-        flags |= PY_TPFLAGS_DICT_SUBCLASS;
-    }
-    if ty.is_subtype(exp_zoo.base_exception_type) {
-        flags |= PY_TPFLAGS_BASE_EXC_SUBCLASS;
-    }
-    if ty.is_subtype(zoo.type_type) {
-        flags |= PY_TPFLAGS_TYPE_SUBCLASS;
-    }
-
-    flags as c_ulong
+    ty.slots.flags.bits() as u32 as c_ulong
 }
 
 #[unsafe(no_mangle)]
