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/borrowck/mut-borrow-of-mut-ref.rs | 37 +++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 src/test/ui/borrowck/mut-borrow-of-mut-ref.rs (limited to 'src/test/ui/borrowck/mut-borrow-of-mut-ref.rs') diff --git a/src/test/ui/borrowck/mut-borrow-of-mut-ref.rs b/src/test/ui/borrowck/mut-borrow-of-mut-ref.rs new file mode 100644 index 000000000..7cdb16b28 --- /dev/null +++ b/src/test/ui/borrowck/mut-borrow-of-mut-ref.rs @@ -0,0 +1,37 @@ +// Suggest not mutably borrowing a mutable reference +#![crate_type = "rlib"] + +pub fn f(b: &mut i32) { + //~^ NOTE the binding is already a mutable borrow + //~| NOTE the binding is already a mutable borrow + h(&mut b); + //~^ ERROR cannot borrow + //~| NOTE cannot borrow as mutable + //~| HELP try removing `&mut` here + g(&mut &mut b); + //~^ ERROR cannot borrow + //~| NOTE cannot borrow as mutable + //~| HELP try removing `&mut` here +} + +pub fn g(b: &mut i32) { //~ NOTE the binding is already a mutable borrow + h(&mut &mut b); + //~^ ERROR cannot borrow + //~| NOTE cannot borrow as mutable + //~| HELP try removing `&mut` here +} + +pub fn h(_: &mut i32) {} + +trait Foo { + fn bar(&mut self); +} + +impl Foo for &mut String { + fn bar(&mut self) {} +} + +pub fn baz(f: &mut String) { //~ HELP consider making the binding mutable + f.bar(); //~ ERROR cannot borrow `f` as mutable, as it is not declared as mutable + //~^ NOTE cannot borrow as mutable +} -- cgit v1.2.3