1 files changed, 62 insertions, 0 deletions
diff --git a/tests/ui/type/type-check/assignment-in-if.rs b/tests/ui/type/type-check/assignment-in-if.rs
new file mode 100644
index 000000000..ada250df2
--- /dev/null
+++ b/tests/ui/type/type-check/assignment-in-if.rs
@@ -0,0 +1,62 @@
+// Test that the parser does not attempt to parse struct literals
+// within assignments in if expressions.
+
+#![allow(unused_parens)]
+
+struct Foo {
+    foo: usize
+}
+
+fn main() {
+    let x = 1;
+    let y: Foo;
+
+    // `x { ... }` should not be interpreted as a struct literal here
+    if x = x {
+        //~^ ERROR mismatched types
+        println!("{}", x);
+    }
+    // Explicit parentheses on the left should match behavior of above
+    if (x = x) {
+        //~^ ERROR mismatched types
+        println!("{}", x);
+    }
+    // The struct literal interpretation is fine with explicit parentheses on the right
+    if y = (Foo { foo: x }) {
+        //~^ ERROR mismatched types
+        println!("{}", x);
+    }
+    // "invalid left-hand side of assignment" error is suppresed
+    if 3 = x {
+        //~^ ERROR mismatched types
+        println!("{}", x);
+    }
+    if (
+        if true {
+            x = 4 //~ ERROR mismatched types
+        } else {
+            x = 5 //~ ERROR mismatched types
+        }
+    ) {
+        println!("{}", x);
+    }
+
+    if x == x && x = x && x == x {
+        //~^ ERROR mismatched types
+        //~| ERROR mismatched types
+        //~| ERROR mismatched types
+        println!("{}", x);
+    }
+
+    if x == x && x == x && x = x {
+        //~^ ERROR mismatched types
+        //~| ERROR mismatched types
+        println!("{}", x);
+    }
+
+    if x = 1 && x == 1 {
+        //~^ ERROR mismatched types
+        //~| ERROR mismatched types
+        println!("{}", x);
+    }
+}