On Saturday, 27 May 2017 at 20:24:26 UTC, Moritz Maxeiner wrote:
On Saturday, 27 May 2017 at 19:26:50 UTC, Ola Fosheim Grøstad wrote:
On Saturday, 27 May 2017 at 19:01:12 UTC, Moritz Maxeiner wrote:
Here, `bar`, takes a (pointer to a) class instance as parameter `foo`. `foo` is a single pointer, i.e. 8 bytes on a 64bit OS, with *no* special semantics.

Does the language spec say anything about the size of class references?

Yes, is is defined as `ptrsize` and must have the exact same size as a pointer to a struct and - more importantly - a pointer to a stack frame[1].

Huh? You are talking about lambdas?

Didnt find anything on class references in that Intel specific ABI, which appears to be optional anyway.


Yes, see above link. Unless you make *all* stack frame pointers smart pointers (which makes no sense whatsoever), class instances cannot be smart pointers in the language as it is specified right now.

I don't understand. Why are frame pointers relevant for class references?



Sure, and the definition requires it.

Why?



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