Issue 5656 change meaning of borrowed self #5827
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signature. In a nutshell, the idea is to (1) report an error if, for a region pointer `'a T`, the lifetime `'a` is longer than any lifetimes that appear in `T` (in other words, if a borrowed pointer outlives any portion of its contents) and then (2) use this to assume that in a function like `fn(self: &'a &'b T)`, the relationship `'a <= 'b` holds. This is needed for rust-lang#5656. Fixes rust-lang#5728.
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See #5656 for details.
r? @pcwalton