The unsafe version of the formatting function.

This is currently an unsafe function because the types of all arguments aren't verified by immediate callers of this function. This currently does not validate that the correct types of arguments are specified for each format specifier, nor that each argument itself contains the right function for formatting the right type value. Because of this, the function is marked as unsafe if this is being called manually.

Thankfully the rust compiler provides the macro format! which will perform all of this validation at compile-time and provides a safe interface for invoking this function.

Arguments

• fmts - the precompiled format string to emit.
• args - the list of arguments to the format string. These are only the positional arguments (not named)

Note that this function assumes that there are enough arguments for the format string.