Historically, compiler certification is a bad joke. It amounts to concerted testing at best, and wishful thinking in most cases. Few (remotely useful) compile

Historically, compiler certification is a bad joke. It amounts to concerted testing at best, and wishful thinking in most cases. Few (remotely useful) compilers have been verified in any mathematical sense, and even then there is generally a wide gulf between what is proved and what we would intuitively expect a truly correct compiler to do.