Richard Smith 1b335402d1 Allow incomplete return types in function declarations. (#3875) ...

Move completeness check to the point where the function is defined or
first called. This means we also defer deciding whether the function has
a return slot until that point. Instead of storing a return slot per
function, store the location of the return storage, which may or may not
be used, and compute and store a separate flag saying whether to use it
at the point of first use or definition.

This is the final piece in supporting simple `Make` functions in classes
as a replacement for constructors.

2024-04-11 07:23:56 +00:00

..

in_place_tuple_init.carbon

Allow incomplete return types in function declarations. (#3875)

2024-04-11 07:23:56 +00:00