QUERY · ISSUE
Overflow converting -2147483648 to int when using MPZ
py-core
When MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_MPZ, calling mp_obj_get_int() for a Python variable that contains the value -2147483648 results in an overflow converting long int to machine word error.
If MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_LONGLONG instead, the conversion works OK.
Is the MPZ overflow check incorrect?
CANDIDATE · ISSUE
Can't convert -0x80000000 to int32 with mp_obj_int_get_checked
Hello,
correct me if im wrong, but
mp_int_t in = -0x80000000;
mp_obj_t i = mp_obj_new_int_from_ll(in);
mp_int_t out = mp_obj_int_get_checked(i);
throws
OverflowError: overflow converting long int to machine word
I would expect this conversion to be valid since -0x80000000 is in the range of a int32.
This works:
mp_int_t in = -0x7FFFFFFF;
mp_obj_t i = mp_obj_new_int_from_ll(in);
mp_int_t out = mp_obj_int_get_checked(i);
Sebastian