On: Catch-23: The New C Standard Sets the World on Fir...

[adgjlsfhk1]

> you have to be careful to test your code on different compiler settings.

The problem is you have to test your code on compilers that don't exist yet with compiler settings that do different things from any compiler that ever might exist.

[coliveira → adgjlsfhk1]

This has always been the case. If you write code that has UB, new compilers can do something yet undefined, by definition.