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| author | Andre Bogus <bogusandre@gmail.com> | 2016-08-28 20:35:48 +0200 |
|---|---|---|
| committer | Andre Bogus <bogusandre@gmail.com> | 2016-08-28 20:35:48 +0200 |
| commit | 744312754dc3a3c36d2a609bb24889cb1b7994de (patch) | |
| tree | 3e854a71bc5961bb6bf0c58d3087b0ec52a5d6cd | |
| parent | 1fd85b1a80429a5d217424b2e7f51d0082713b9d (diff) | |
| download | rust-744312754dc3a3c36d2a609bb24889cb1b7994de.tar.gz rust-744312754dc3a3c36d2a609bb24889cb1b7994de.zip | |
fixed and extended tests once more
| -rw-r--r-- | src/test/compile-fail/rfc1623.rs | 70 | ||||
| -rw-r--r-- | src/test/run-pass/rfc1623.rs | 5 |
2 files changed, 69 insertions, 6 deletions
diff --git a/src/test/compile-fail/rfc1623.rs b/src/test/compile-fail/rfc1623.rs index 963459b27bf..abdcc02de76 100644 --- a/src/test/compile-fail/rfc1623.rs +++ b/src/test/compile-fail/rfc1623.rs @@ -17,18 +17,82 @@ static NON_ELIDABLE_FN : &fn(&u8, &u8) -> &u8 = //~^ ERROR: missing lifetime specifier &(non_elidable as fn(&u8, &u8) -> &u8); +struct SomeStruct<'x, 'y, 'z: 'x> { + foo: &'x Foo<'z>, + bar: &'x Bar<'z>, + f: &'y for<'a, 'b: 'a> Fn(&'a Foo<'b>) -> &'a Bar<'b>, +} + +fn id<T>(t: T) -> T { t } + +static SOME_STRUCT : &SomeStruct = SomeStruct { + foo: &Foo { bools: &[false, true] }, + bar: &Bar { bools: &[true, true] }, + f: &id, +}; + +// very simple test for a 'static static with default lifetime +static STATIC_STR : &'static str = "&'static str"; +const CONST_STR : &'static str = "&'static str"; + +// this should be the same as without default: +static EXPLICIT_STATIC_STR : &'static str = "&'static str"; +const EXPLICIT_CONST_STR : &'static str = "&'static str"; + +// a function that elides to an unbound lifetime for both in- and output +fn id_u8_slice(arg: &[u8]) -> &[u8] { arg } + +// one with a function, argument elided +static STATIC_SIMPLE_FN : &'static fn(&[u8]) -> &[u8] = + &(id_u8_slice as fn(&[u8]) -> &[u8]); +const CONST_SIMPLE_FN : &'static fn(&[u8]) -> &[u8] = + &(id_u8_slice as fn(&[u8]) -> &[u8]); + +// this should be the same as without elision +static STATIC_NON_ELIDED_fN : &'static for<'a> fn(&'a [u8]) -> &'a [u8] = + &(id_u8_slice as for<'a> fn(&'a [u8]) -> &'a [u8]); +const CONST_NON_ELIDED_fN : &'static for<'a> fn(&'a [u8]) -> &'a [u8] = + &(id_u8_slice as for<'a> fn(&'a [u8]) -> &'a [u8]); + +// another function that elides, each to a different unbound lifetime +fn multi_args(a: &u8, b: &u8, c: &u8) { } + +static STATIC_MULTI_FN : &'static fn(&u8, &u8, &u8) = + &(multi_args as fn(&u8, &u8, &u8)); +const CONST_MULTI_FN : &'static fn(&u8, &u8, &u8) = + &(multi_args as fn(&u8, &u8, &u8)); + +struct Foo<'a> { + bools: &'a [bool] +} + +static STATIC_FOO : Foo<'static> = Foo { bools: &[true, false] }; +const CONST_FOO : Foo<'static> = Foo { bools: &[true, false] }; + +type Bar<'a> = Foo<'a>; + +static STATIC_BAR : Bar<'static> = Bar { bools: &[true, false] }; +const CONST_BAR : Bar<'static> = Bar { bools: &[true, false] }; + type Baz<'a> = fn(&'a [u8]) -> Option<u8>; fn baz(e: &[u8]) -> Option<u8> { e.first().map(|x| *x) } -static STATIC_BAZ : &Baz<'static> = &(baz as Baz); -const CONST_BAZ : &Baz<'static> = &(baz as Baz); +static STATIC_BAZ : &'static Baz<'static> = &(baz as Baz); +const CONST_BAZ : &'static Baz<'static> = &(baz as Baz); + +static BYTES : &'static [u8] = &[1, 2, 3]; fn main() { let x = &[1u8, 2, 3]; let y = x; - //surprisingly this appears to work, so lifetime < `'static` is valid + //this works, so lifetime < `'static` is valid assert_eq!(Some(1), STATIC_BAZ(y)); assert_eq!(Some(1), CONST_BAZ(y)); + + let y = &[1u8, 2, 3]; + //^~ ERROR: borrowed values does not live long enough + STATIC_BAZ(BYTES); // BYTES has static lifetime + CONST_BAZ(y); // This forces static lifetime, which y has not } diff --git a/src/test/run-pass/rfc1623.rs b/src/test/run-pass/rfc1623.rs index bd0420bb506..0915118ca27 100644 --- a/src/test/run-pass/rfc1623.rs +++ b/src/test/run-pass/rfc1623.rs @@ -68,9 +68,8 @@ fn main() { STATIC_SIMPLE_FN(x); CONST_SIMPLE_FN(x); - let y = &[1u8, 2, 3]; - STATIC_BAZ(BYTES); - //CONST_BAZ(y); // strangely enough, this fails + STATIC_BAZ(BYTES); // neees static lifetime + CONST_BAZ(BYTES); // make sure this works with different lifetimes let a = &1; |
