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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-infer-reborrow-ref-mut-recurse.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-infer-reborrow-ref-mut-recurse.rs')
-rw-r--r-- | src/test/ui/regions/regions-infer-reborrow-ref-mut-recurse.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/regions/regions-infer-reborrow-ref-mut-recurse.rs b/src/test/ui/regions/regions-infer-reborrow-ref-mut-recurse.rs new file mode 100644 index 000000000..31a48b4ad --- /dev/null +++ b/src/test/ui/regions/regions-infer-reborrow-ref-mut-recurse.rs @@ -0,0 +1,18 @@ +// run-pass +#![allow(dead_code)] +// Test an edge case in region inference: the lifetime of the borrow +// of `*x` must be extended to at least 'a. + +// pretty-expanded FIXME #23616 + +fn foo<'a,'b>(x: &'a &'b mut isize) -> &'a isize { + let y = &*x; // should be inferred to have type &'a &'b mut isize... + + // ...because if we inferred, say, &'x &'b mut isize where 'x <= 'a, + // this reborrow would be illegal: + &**y +} + +pub fn main() { + /* Just want to know that it compiles. */ +} |