|
| 1 | +warning: function cannot return without recursing |
| 2 | + --> $DIR/hrtb-perfect-forwarding.rs:22:1 |
| 3 | + | |
| 4 | +LL | / fn no_hrtb<'b,T>(mut t: T) |
| 5 | +LL | | where T : Bar<&'b isize> |
| 6 | +LL | | { |
| 7 | +LL | | // OK -- `T : Bar<&'b isize>`, and thus the impl above ensures that |
| 8 | +LL | | // `&mut T : Bar<&'b isize>`. |
| 9 | +LL | | no_hrtb(&mut t); |
| 10 | + | | --------------- recursive call site |
| 11 | +LL | | } |
| 12 | + | |_^ cannot return without recursing |
| 13 | + | |
| 14 | + = note: `#[warn(unconditional_recursion)]` on by default |
| 15 | + = help: a `loop` may express intention better if this is on purpose |
| 16 | + |
| 17 | +warning: function cannot return without recursing |
| 18 | + --> $DIR/hrtb-perfect-forwarding.rs:30:1 |
| 19 | + | |
| 20 | +LL | / fn bar_hrtb<T>(mut t: T) |
| 21 | +LL | | where T : for<'b> Bar<&'b isize> |
| 22 | +LL | | { |
| 23 | +LL | | // OK -- `T : for<'b> Bar<&'b isize>`, and thus the impl above |
| 24 | +... | |
| 25 | +LL | | bar_hrtb(&mut t); |
| 26 | + | | ---------------- recursive call site |
| 27 | +LL | | } |
| 28 | + | |_^ cannot return without recursing |
| 29 | + | |
| 30 | + = help: a `loop` may express intention better if this is on purpose |
| 31 | + |
| 32 | +warning: function cannot return without recursing |
| 33 | + --> $DIR/hrtb-perfect-forwarding.rs:39:1 |
| 34 | + | |
| 35 | +LL | / fn foo_hrtb_bar_not<'b,T>(mut t: T) |
| 36 | +LL | | where T : for<'a> Foo<&'a isize> + Bar<&'b isize> |
| 37 | +LL | | { |
| 38 | +LL | | // Not OK -- The forwarding impl for `Foo` requires that `Bar` also |
| 39 | +... | |
| 40 | +LL | | foo_hrtb_bar_not(&mut t); |
| 41 | + | | ------------------------ recursive call site |
| 42 | +LL | | } |
| 43 | + | |_^ cannot return without recursing |
| 44 | + | |
| 45 | + = help: a `loop` may express intention better if this is on purpose |
| 46 | + |
| 47 | +error: higher-ranked subtype error |
| 48 | + --> $DIR/hrtb-perfect-forwarding.rs:46:5 |
| 49 | + | |
| 50 | +LL | foo_hrtb_bar_not(&mut t); |
| 51 | + | ^^^^^^^^^^^^^^^^^^^^^^^^ |
| 52 | + |
| 53 | +warning: function cannot return without recursing |
| 54 | + --> $DIR/hrtb-perfect-forwarding.rs:49:1 |
| 55 | + | |
| 56 | +LL | / fn foo_hrtb_bar_hrtb<T>(mut t: T) |
| 57 | +LL | | where T : for<'a> Foo<&'a isize> + for<'b> Bar<&'b isize> |
| 58 | +LL | | { |
| 59 | +LL | | // OK -- now we have `T : for<'b> Bar&'b isize>`. |
| 60 | +LL | | foo_hrtb_bar_hrtb(&mut t); |
| 61 | + | | ------------------------- recursive call site |
| 62 | +LL | | } |
| 63 | + | |_^ cannot return without recursing |
| 64 | + | |
| 65 | + = help: a `loop` may express intention better if this is on purpose |
| 66 | + |
| 67 | +error: aborting due to previous error |
| 68 | + |
0 commit comments