[the_svd_doctor]

Right but some code will stop compiling, no?

[jcalvinowens]

Yes. But such code can be fixed without functional changes.

I'm not denying that there are codebases where trying this would result in an Armageddon of refactoring, but I would venture that's the exception rather than the rule.

Most C programmers use "const char*" for string literals, and have for a long time.