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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/regions/regions-name-undeclared.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/regions/regions-name-undeclared.rs')
-rw-r--r-- | src/test/ui/regions/regions-name-undeclared.rs | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/test/ui/regions/regions-name-undeclared.rs b/src/test/ui/regions/regions-name-undeclared.rs new file mode 100644 index 000000000..7b6ede193 --- /dev/null +++ b/src/test/ui/regions/regions-name-undeclared.rs @@ -0,0 +1,58 @@ +// edition:2018 +// Check that lifetime resolver enforces the lifetime name scoping +// rules correctly in various scenarios. + +struct Foo<'a> { + x: &'a isize +} + +impl<'a> Foo<'a> { + // &'a is inherited: + fn m1(&self, arg: &'a isize) { } + fn m2(&'a self) { } + fn m3(&self, arg: Foo<'a>) { } + + // &'b is not: + fn m4(&self, arg: &'b isize) { } //~ ERROR undeclared lifetime + fn m5(&'b self) { } //~ ERROR undeclared lifetime + fn m6(&self, arg: Foo<'b>) { } //~ ERROR undeclared lifetime +} + +fn bar<'a>(x: &'a isize) { + // &'a is visible to code: + let y: &'a isize = x; + + // &'a is not visible to *items*: + type X = Option<&'a isize>; //~ ERROR can't use generic parameters from outer item + enum E { + E1(&'a isize) //~ ERROR can't use generic parameters from outer item + } + struct S { + f: &'a isize //~ ERROR can't use generic parameters from outer item + } + fn f(a: &'a isize) { } //~ ERROR can't use generic parameters from outer item + + // &'a CAN be declared on functions and used then: + fn g<'a>(a: &'a isize) { } // OK + fn h(a: Box<dyn for<'a> FnOnce(&'a isize)>) { } // OK +} + +// Test nesting of lifetimes in fn type declarations +fn fn_types(a: &'a isize, //~ ERROR undeclared lifetime + b: Box<dyn for<'a> FnOnce(&'a isize, + &'b isize, //~ ERROR undeclared lifetime + Box<dyn for<'b> FnOnce(&'a isize, + &'b isize)>, + &'b isize)>, //~ ERROR undeclared lifetime + c: &'a isize) //~ ERROR undeclared lifetime +{ +} + +struct Bug {} +impl Bug { + async fn buggy(&self) -> &'a str { //~ ERROR use of undeclared lifetime name `'a` + todo!() + } +} + +pub fn main() {} |