Bytes type fails len when parallel

[benwilliamgraham]

import numba

@numba.njit(parallel=True)
def f(x):
    return len(x)

print(f(b"abcd"))

Bytes type fails in array analysis when in parallel with the following error. It appears to do so because it inherits from ArrayCompatible. Here is the resulting error:

numba.core.errors.LoweringError: Failed in nopython mode pipeline (step: native lowering)
No definition for lowering readonly bytes(uint8, 1d, C).shape

File "test.py", line 6:
def f(x):
    return len(x)
    ^
During: lowering "x_shape.0 = getattr(value=x, attr=shape)" at /tmp/test.py (6)

[stuartarchibald]

Thanks for the report. As discussed at the Numba meeting today, the comment here: #8285 (comment) covers the reasons and potential fix.