diff options
Diffstat (limited to 'tests/ui/feature-gates/feature-gate-unsized_locals.stderr')
| -rw-r--r-- | tests/ui/feature-gates/feature-gate-unsized_locals.stderr | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/feature-gates/feature-gate-unsized_locals.stderr b/tests/ui/feature-gates/feature-gate-unsized_locals.stderr new file mode 100644 index 000000000..9aeeb88cf --- /dev/null +++ b/tests/ui/feature-gates/feature-gate-unsized_locals.stderr @@ -0,0 +1,20 @@ +error[E0277]: the size for values of type `(dyn FnOnce() + 'static)` cannot be known at compilation time + --> $DIR/feature-gate-unsized_locals.rs:1:6 + | +LL | fn f(f: dyn FnOnce()) {} + | ^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `(dyn FnOnce() + 'static)` + = help: unsized fn params are gated as an unstable feature +help: you can use `impl Trait` as the argument type + | +LL | fn f(f: impl FnOnce()) {} + | ~~~~ +help: function arguments must have a statically known size, borrowed types always have a known size + | +LL | fn f(f: &dyn FnOnce()) {} + | + + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. |