Strange behavior associated with a segmentation fault

[iSunfield]

I am struggling with strange behavior related to a segmentation fault while trying to implement a derived class to hold data in an Array. Could I get some advice? I've extracted the minimal code that reproduces the error, and below I present code snippets that cause the segmentation fault and those that do not.

The following code results in a segmentation fault

class Base:
    InBuffer : Array[UInt[64]]
    OutBufferA : Array[UInt[64]]
    OutBufferB : Array[UInt[64]]

    def __init__(self,BufferSize:int):
        self.OutBufferA = Array[UInt[64]](BufferSize)
        self.OutBufferB = Array[UInt[64]](BufferSize)
        self.InBuffer = Array[UInt[64]](10)
    
    def Exe(self,Id:int):
        pass

class TestMod(Base):
    def __init__(self,BufferSize:int):
        super().__init__(BufferSize)
        
    def Exe(self,Id:int):
        print(Id)       


if __name__ == "__main__":
    In : Array[UInt[64]]
    line : str

    In = Array[UInt[64]](2 ** 17)
    TestM : TestMod

    TestM = TestMod(2 ** 17)
    TestM.InBuffer = In

    TestM.Exe(1)

    with open("TestDt.txt","r") as fin:
        for line in fin:
           pass

    TestM.Exe(2)

result:
  run: line 19: 1594182 Segmentation fault 

Commenting out

#TestM.InBuffer = In

or

Commenting out read file code

#with open("TestDt.txt","r") as fin:
#     for line in fin:
#       pass

resolves the segmentation fault.

result:
1
2
 *  Terminal will be reused by tasks, press any key to close it. 

"TestDt.txt" is below.

8,
+0.000000000 ,+0.000000000 ,+0.000000000 ,+0.000000000 ,+0.000000000 ,+0.000000000 ,+0.000000000 ,+0.000000000 ,

[arshajii]

Thanks for the report, @iSunfield -- this looks like an issue with inheritance. We'll take a look and follow up ASAP. If you use static inheritance via class TestMod(Static[Base]) it seems to work.