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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:42 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 02:49:42 +0000 |
commit | 837b550238aa671a591ccf282dddeab29cadb206 (patch) | |
tree | 914b6b8862bace72bd3245ca184d374b08d8a672 /tests/ui/fn/fn-item-lifetime-bounds.rs | |
parent | Adding debian version 1.70.0+dfsg2-1. (diff) | |
download | rustc-837b550238aa671a591ccf282dddeab29cadb206.tar.xz rustc-837b550238aa671a591ccf282dddeab29cadb206.zip |
Merging upstream version 1.71.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/fn/fn-item-lifetime-bounds.rs')
-rw-r--r-- | tests/ui/fn/fn-item-lifetime-bounds.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tests/ui/fn/fn-item-lifetime-bounds.rs b/tests/ui/fn/fn-item-lifetime-bounds.rs new file mode 100644 index 000000000..68a1d0ce9 --- /dev/null +++ b/tests/ui/fn/fn-item-lifetime-bounds.rs @@ -0,0 +1,37 @@ +// check-pass +// known-bug: #84533 + +// Should fail. Lifetimes are checked correctly when `foo` is called, but NOT +// when only the lifetime parameters are instantiated. + +use std::marker::PhantomData; + +#[allow(dead_code)] +fn foo<'b, 'a>() -> PhantomData<&'b &'a ()> { + PhantomData +} + +#[allow(dead_code)] +#[allow(path_statements)] +fn caller<'b, 'a>() { + foo::<'b, 'a>; +} + +// In contrast to above, below code correctly does NOT compile. +// fn caller<'b, 'a>() { +// foo::<'b, 'a>(); +// } + +// error: lifetime may not live long enough +// --> src/main.rs:22:5 +// | +// 21 | fn caller<'b, 'a>() { +// | -- -- lifetime `'a` defined here +// | | +// | lifetime `'b` defined here +// 22 | foo::<'b, 'a>(); +// | ^^^^^^^^^^^^^^^ requires that `'a` must outlive `'b` +// | +// = help: consider adding the following bound: `'a: 'b` + +fn main() {} |