summaryrefslogtreecommitdiffstats
path: root/src/test/ui/span/mut-arg-hint.rs
diff options
context:
space:
mode:
Diffstat (limited to 'src/test/ui/span/mut-arg-hint.rs')
-rw-r--r--src/test/ui/span/mut-arg-hint.rs22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/span/mut-arg-hint.rs b/src/test/ui/span/mut-arg-hint.rs
new file mode 100644
index 000000000..d7ff1f0de
--- /dev/null
+++ b/src/test/ui/span/mut-arg-hint.rs
@@ -0,0 +1,22 @@
+trait B {
+ fn foo(mut a: &String) {
+ a.push_str("bar"); //~ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
+ }
+}
+
+pub fn foo<'a>(mut a: &'a String) {
+ a.push_str("foo"); //~ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
+}
+
+struct A {}
+
+impl A {
+ pub fn foo(mut a: &String) {
+ a.push_str("foo"); //~ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
+ }
+}
+
+fn main() {
+ foo(&"a".to_string());
+ A::foo(&"a".to_string());
+}