[hgs3]

C2Y, the next C revision, introduced "enable safe programming" into the C standard charter [1]. The C committee is eager for proposals like this.

Adding a new feature, like slices, as a Clang extension would be considerably faster than creating a new dialect or language, and it would be immediately usable by every C codebase building with Clang. Even if the feature is "slow" to be incorporated into the standard, it would still be accessible as a compiler extension in the interim.

[1] https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3223.pdf