Re:C++17 and its Technical Specifications
by sbmassey on Thursday March 03, 2016 @08:41PM
(#11221467)
How about wrapping the return value in a templated error class that the caller has to explicitly unwrap with an error handler to be able to use?
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That will help if there is a value to return - but then it's not much better than just returning something invalid, like a NULL pointer. If the only return value is success/failure you need compiler support (1) to ensure it's not ignored.
(1) There are clever hacks to mimic this behavior to some extent, but I don't even want to go there. If you really want this feature - just use a language that has it.