Comment by gnomewascool

What the OP meant is that there are (multiple!) open source C compilers, which you agree is the case.

Questions about the standard/specification are a different matter:

1. Whether the language has one? (Many languages, both open source and proprietary don't! I believe mojo doesn't have one?)

2. Whether it's available for free (gratis)?

3. Whether it's under a free (libre) license that allows redistribution with modifications?