diff options
Diffstat (limited to 'src/test/ui/dst/dst-bad-coerce3.rs')
-rw-r--r-- | src/test/ui/dst/dst-bad-coerce3.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/ui/dst/dst-bad-coerce3.rs b/src/test/ui/dst/dst-bad-coerce3.rs new file mode 100644 index 000000000..fd5ee3b57 --- /dev/null +++ b/src/test/ui/dst/dst-bad-coerce3.rs @@ -0,0 +1,37 @@ +// Attempt to extend the lifetime as well as unsizing. + +#![feature(unsized_tuple_coercion)] + +struct Fat<T: ?Sized> { + ptr: T +} + +struct Foo; +trait Bar { fn bar(&self) {} } +impl Bar for Foo {} + +fn baz<'a>() { + // With a vec of ints. + let f1 = Fat { ptr: [1, 2, 3] }; + let f2: &Fat<[isize; 3]> = &f1; //~ ERROR `f1` does not live long enough + let f3: &'a Fat<[isize]> = f2; + + // With a trait. + let f1 = Fat { ptr: Foo }; + let f2: &Fat<Foo> = &f1; //~ ERROR `f1` does not live long enough + let f3: &'a Fat<dyn Bar> = f2; + + // Tuple with a vec of ints. + let f1 = ([1, 2, 3],); + let f2: &([isize; 3],) = &f1; //~ ERROR `f1` does not live long enough + let f3: &'a ([isize],) = f2; + + // Tuple with a trait. + let f1 = (Foo,); + let f2: &(Foo,) = &f1; //~ ERROR `f1` does not live long enough + let f3: &'a (dyn Bar,) = f2; +} + +pub fn main() { + baz(); +} |