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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/cannot-mutate-captured-non-mut-var.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/cannot-mutate-captured-non-mut-var.rs')
-rw-r--r-- | tests/ui/cannot-mutate-captured-non-mut-var.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/cannot-mutate-captured-non-mut-var.rs b/tests/ui/cannot-mutate-captured-non-mut-var.rs new file mode 100644 index 000000000..952dab25b --- /dev/null +++ b/tests/ui/cannot-mutate-captured-non-mut-var.rs @@ -0,0 +1,15 @@ +#![feature(unboxed_closures, tuple_trait)] + +use std::io::Read; + +fn to_fn_once<A:std::marker::Tuple,F:FnOnce<A>>(f: F) -> F { f } + +fn main() { + let x = 1; + to_fn_once(move|| { x = 2; }); + //~^ ERROR: cannot assign to `x`, as it is not declared as mutable + + let s = std::io::stdin(); + to_fn_once(move|| { s.read_to_end(&mut Vec::new()); }); + //~^ ERROR: cannot borrow `s` as mutable, as it is not declared as mutable +} |