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-rw-r--r--tests/ui/borrowck/borrowck-match-binding-is-assignment.rs41
1 files changed, 41 insertions, 0 deletions
diff --git a/tests/ui/borrowck/borrowck-match-binding-is-assignment.rs b/tests/ui/borrowck/borrowck-match-binding-is-assignment.rs
new file mode 100644
index 000000000..064bf69ae
--- /dev/null
+++ b/tests/ui/borrowck/borrowck-match-binding-is-assignment.rs
@@ -0,0 +1,41 @@
+// Test that immutable pattern bindings cannot be reassigned.
+
+enum E {
+ Foo(isize)
+}
+
+struct S {
+ bar: isize,
+}
+
+pub fn main() {
+ match 1 {
+ x => {
+ x += 1; //~ ERROR [E0384]
+ }
+ }
+
+ match E::Foo(1) {
+ E::Foo(x) => {
+ x += 1; //~ ERROR [E0384]
+ }
+ }
+
+ match (S { bar: 1 }) {
+ S { bar: x } => {
+ x += 1; //~ ERROR [E0384]
+ }
+ }
+
+ match (1,) {
+ (x,) => {
+ x += 1; //~ ERROR [E0384]
+ }
+ }
+
+ match [1,2,3] {
+ [x,_,_] => {
+ x += 1; //~ ERROR [E0384]
+ }
+ }
+}