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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/borrowck/borrowck-borrow-of-mut-base-ptr-safe.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/borrowck/borrowck-borrow-of-mut-base-ptr-safe.rs')
-rw-r--r-- | src/test/ui/borrowck/borrowck-borrow-of-mut-base-ptr-safe.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/borrowck-borrow-of-mut-base-ptr-safe.rs b/src/test/ui/borrowck/borrowck-borrow-of-mut-base-ptr-safe.rs new file mode 100644 index 000000000..5ef282c0c --- /dev/null +++ b/src/test/ui/borrowck/borrowck-borrow-of-mut-base-ptr-safe.rs @@ -0,0 +1,21 @@ +// run-pass +#![allow(dead_code)] +#![allow(unused_mut)] +#![allow(unused_variables)] +// Test that freezing an `&mut` pointer while referent is +// frozen is legal. +// +// Example from compiler/rustc_borrowck/borrowck/README.md + +// pretty-expanded FIXME #23616 + +fn foo<'a>(mut t0: &'a mut isize, + mut t1: &'a mut isize) { + let p: &isize = &*t0; // Freezes `*t0` + let mut t2 = &t0; + let q: &isize = &**t2; // Freezes `*t0`, but that's ok... + let r: &isize = &*t0; // ...after all, could do same thing directly. +} + +pub fn main() { +} |