diff options
Diffstat (limited to 'tests/run-pass-valgrind/unsized-locals/by-value-trait-objects-rust-call2.rs')
-rw-r--r-- | tests/run-pass-valgrind/unsized-locals/by-value-trait-objects-rust-call2.rs | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/tests/run-pass-valgrind/unsized-locals/by-value-trait-objects-rust-call2.rs b/tests/run-pass-valgrind/unsized-locals/by-value-trait-objects-rust-call2.rs new file mode 100644 index 000000000..94df2b0b8 --- /dev/null +++ b/tests/run-pass-valgrind/unsized-locals/by-value-trait-objects-rust-call2.rs @@ -0,0 +1,70 @@ +#![feature(unsized_locals)] +#![feature(unboxed_closures)] +#![feature(tuple_trait)] + +pub trait FnOnce<Args: std::marker::Tuple> { + type Output; + extern "rust-call" fn call_once(self, args: Args) -> Self::Output; +} + +struct A; + +impl FnOnce<(String, Box<str>)> for A { + type Output = String; + extern "rust-call" fn call_once(self, (s1, s2): (String, Box<str>)) -> Self::Output { + assert_eq!(&s1 as &str, "s1"); + assert_eq!(&s2 as &str, "s2"); + format!("hello") + } +} + +struct B(i32); + +impl FnOnce<(String, Box<str>)> for B { + type Output = String; + extern "rust-call" fn call_once(self, (s1, s2): (String, Box<str>)) -> Self::Output { + assert_eq!(&s1 as &str, "s1"); + assert_eq!(&s2 as &str, "s2"); + format!("{}", self.0) + } +} + +struct C(String); + +impl FnOnce<(String, Box<str>)> for C { + type Output = String; + extern "rust-call" fn call_once(self, (s1, s2): (String, Box<str>)) -> Self::Output { + assert_eq!(&s1 as &str, "s1"); + assert_eq!(&s2 as &str, "s2"); + self.0 + } +} + +struct D(Box<String>); + +impl FnOnce<(String, Box<str>)> for D { + type Output = String; + extern "rust-call" fn call_once(self, (s1, s2): (String, Box<str>)) -> Self::Output { + assert_eq!(&s1 as &str, "s1"); + assert_eq!(&s2 as &str, "s2"); + *self.0 + } +} + + +fn main() { + let (s1, s2) = (format!("s1"), format!("s2").into_boxed_str()); + let x = *(Box::new(A) as Box<dyn FnOnce<(String, Box<str>), Output = String>>); + assert_eq!(x.call_once((s1, s2)), format!("hello")); + let (s1, s2) = (format!("s1"), format!("s2").into_boxed_str()); + let x = *(Box::new(B(42)) as Box<dyn FnOnce<(String, Box<str>), Output = String>>); + assert_eq!(x.call_once((s1, s2)), format!("42")); + let (s1, s2) = (format!("s1"), format!("s2").into_boxed_str()); + let x = *(Box::new(C(format!("jumping fox"))) + as Box<dyn FnOnce<(String, Box<str>), Output = String>>); + assert_eq!(x.call_once((s1, s2)), format!("jumping fox")); + let (s1, s2) = (format!("s1"), format!("s2").into_boxed_str()); + let x = *(Box::new(D(Box::new(format!("lazy dog")))) + as Box<dyn FnOnce<(String, Box<str>), Output = String>>); + assert_eq!(x.call_once((s1, s2)), format!("lazy dog")); +} |