panic when iterating over static arrays

[charles-cooper]

Version Information

• vyper Version (output of vyper --version): 762eec6

What's your issue about?

following contract panics when compiling:

X: constant(uint24[4]) = [1,2,3,4]

@external
def foo():
    x: uint24 = 0
    for s: uint24 in X:
        x += s

error looks like

Error compiling: tmp/foo.vy
AssertionError

During handling of the above exception, another exception occurred:

vyper.exceptions.CodegenPanic: unhandled exception , parse_For

  contract "tmp/foo.vy:6", function "foo", line 6:4 
       5     x: uint24 = 0
  ---> 6     for s: uint24 in X:
  -----------^
       7         x += s


This is an unhandled internal compiler error. Please create an issue on Github to notify the developers!
https://github.com/vyperlang/vyper/issues/new?template=bug.md

How can it be fixed?

Fill this in if you know how to fix it.