Modular•12mo ago

Raise returns a string?

I'm running this code:

fn test() raises -> StringRef:
    raise Error("Test")


fn main() raises:
    let res = test()

    print(res)  # prints "Test"

fn test() raises -> StringRef:
    raise Error("Test")


fn main() raises:
    let res = test()

    print(res)  # prints "Test"

It seems like if I raise an error on a function that returns a String then the error value becomes the return value... Is that expected behavior?

3 Replies

Michael K•12mo ago

You should filed a bug report (https://github.com/modularml/mojo/issues). The behavious seems specific to raising in a fn that returns a StringRef. Other return types raise appropriately and the print statement is never reached.

Igor•12mo ago

https://github.com/modularml/mojo/issues/926

GitHub

[BUG]: raises returns a StringRef · Issue #926 · modularml/mojo

Bug description When you have a function that returns a StringRef and it raises an error the function will return the value of that error. Is this expected behavior? Steps to reproduce fn test() ra...

Jack Clayton•12mo ago

Thanks very much for the report this is currently being worked on

Gaming

Programming

Raise returns a string?