From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/ui/mut/mut-pattern-internal-mutability.rs | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 src/test/ui/mut/mut-pattern-internal-mutability.rs (limited to 'src/test/ui/mut/mut-pattern-internal-mutability.rs') diff --git a/src/test/ui/mut/mut-pattern-internal-mutability.rs b/src/test/ui/mut/mut-pattern-internal-mutability.rs new file mode 100644 index 000000000..bcee878e3 --- /dev/null +++ b/src/test/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); +} -- cgit v1.2.3