[Issue 4621] Destructors are inherently un- at safe

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4621



--- Comment #6 from Michel Fortin <michel.fortin at michelf.com> 2010-08-11 16:20:44 EDT ---
It could be an attribute, or it could be something else.

For instance, instead of having just destructors, we could have destructors
(~this) and finalizers (~~this). A struct with neither can go anywhere, a
struct with a destructor but no finalizer cannot go on the GC-heap,  a struct
with only a finalizer can go anywhere (the finalizer is used as the
destructor), and a struct with both can go anywhere. The finalizer cannot be
made @safe.

Doing this with structs would probably mean allowing only finalizers (~~this)
for classes, which according to my syntax suggestion would break existing code
for class destructors. Perhaps the syntax should be different.

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