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-rw-r--r--py/runtime.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/py/runtime.c b/py/runtime.c
index d6ef6f9be2..0d1381cff8 100644
--- a/py/runtime.c
+++ b/py/runtime.c
@@ -89,6 +89,9 @@ void rt_init(void) {
mp_map_add_qstr(&map_builtins, MP_QSTR_TypeError, mp_obj_new_exception(MP_QSTR_TypeError));
mp_map_add_qstr(&map_builtins, MP_QSTR_SyntaxError, mp_obj_new_exception(MP_QSTR_SyntaxError));
mp_map_add_qstr(&map_builtins, MP_QSTR_ValueError, mp_obj_new_exception(MP_QSTR_ValueError));
+ // Somehow CPython managed to have OverflowError not inherit from ValueError ;-/
+ // TODO: For MICROPY_CPYTHON_COMPAT==0 use ValueError to avoid exc proliferation
+ mp_map_add_qstr(&map_builtins, MP_QSTR_OverflowError, mp_obj_new_exception(MP_QSTR_OverflowError));
mp_map_add_qstr(&map_builtins, MP_QSTR_OSError, mp_obj_new_exception(MP_QSTR_OSError));
mp_map_add_qstr(&map_builtins, MP_QSTR_AssertionError, mp_obj_new_exception(MP_QSTR_AssertionError));