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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/mut/mut-pattern-internal-mutability.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/mut/mut-pattern-internal-mutability.rs')
-rw-r--r-- | tests/ui/mut/mut-pattern-internal-mutability.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/mut/mut-pattern-internal-mutability.rs b/tests/ui/mut/mut-pattern-internal-mutability.rs new file mode 100644 index 000000000..bcee878e3 --- /dev/null +++ b/tests/ui/mut/mut-pattern-internal-mutability.rs @@ -0,0 +1,15 @@ +fn main() { + let foo = &mut 1; + + let &mut x = foo; + x += 1; //~ ERROR cannot assign twice to immutable variable `x` + + // explicitly mut-ify internals + let &mut mut x = foo; + x += 1; + + // check borrowing is detected successfully + let &mut ref x = foo; + *foo += 1; //~ ERROR cannot assign to `*foo` because it is borrowed + drop(x); +} |