In trying to implement a COW type, but I'm running into problems with
isUniqueReferenced breaking in even fairly simple cases. For example (with
-O) the code below prints "bar: false", commenting out the print in
test() makes
it print "bar: true", and removing the var parameter var foo: Foo and using
var foo = foo instead breaks it again. Am I doing something wrong here?
class FooStorage { var x: Int = 0 }
struct Foo { var storage = FooStorage() }
func bar(var foo: Foo) {
print("bar: \(isUniquelyReferencedNonObjC(&foo.storage))")
}
func test() {
var foo = Foo()
print("test: \(isUniquelyReferencedNonObjC(&foo.storage))")
bar(foo)
}
test()
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