Struct field called number leads to ICE

[cburgdorf]

What is wrong?

The following leads to a compiler error:

struct Foo:
  pub number: u256

contract Meh:

  pub fn yay() -> Foo:
    return Foo(number:2)

Leads to ICE

Error: ParserError: Cannot use builtin function name "number" as identifier name.
  --> input.yul:18:36:
   |
18 |             function $$foo$Foo.new(number) -> return_val {
   |                                    ^^^^^^


Error: ParserError: Expected keyword "data" or "object" or "}".
  --> input.yul:18:36:
   |
18 |             function $$foo$Foo.new(number) -> return_val {
   |                                    ^^^^^^


thread 'main' panicked at 'Yul compilation failed with the above errors', crates/driver/src/lib.rs:179:17
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

You've hit an internal compiler error. This is a bug in the Fe compiler.
Fe is still under heavy development, and isn't yet ready for production use.

If you would, please report this bug at the following URL:
  https://github.com/ethereum/fe/issues/new

How can it be fixed

Needs to be investivated