Simple golang program doesn't run

Question

Here is a simple golang script T1.go:

package main

import \"fmt\"

func main() {
    fmt.Println(\"Hello world\")
}

run it with go r

Answer 1

Your Hex dump shows that you are using Carriage Return characters (U+000D) instead of LineFeeds (U+000A) in the T1.go file. Using only CR as End-of-line is an old Mac way of doing it.

The specification states that a new line is a single line feed character. Since this is not found, the parser assumes it is all written on the same line. In such a case, the compiler requires that you actually type out the semi-colons.

Solution

Change your CR to LF and it should work.

If you use Notepad++, you can do this conversion in the menu Edit - EOL Conversion - Unix/OSX Format.

go fmt does not convert CR to LF, while it does convert CRLF to LF.
The same goes for dos2unix. In your case, it should work with mac2unix.

Answer 2

Sounds like a bug in the 1.2rc1 version. Try the 1.2rc2 and see if the problem is still there.