codon.jit does not support nonlocal

import codon
@codon.jit
def test():
    a = 1
    def P():
        nonlocal a
        print(a)
    P()
    a = 5
    P()


if __name__ == "__main__":
    test()

The error message is：

Assert failed:	unknown type: (null)
Expression:	0
Source:		/github/workspace/codon/sir/llvm/llvisitor.cpp:1510
Aborted

• python == 3.6
• codon-jit == 1.1
• codon == 0.15.3

But codon run xx.py support nonlocal

Yes. It might be a bug of codon.jit