identity_op lint fix for '&' with unsigned types

2017-09-30 11:33:15 +03:00 · 2017-09-30 11:33:15 +03:00 · f68e408cb6
commit f68e408cb6
parent f0aa2c1587
3 changed files with 28 additions and 6 deletions
--- a/tests/ui/identity_op.rs
+++ b/tests/ui/identity_op.rs
@ -27,4 +27,7 @@ fn main() {

    x & NEG_ONE;  //no error, as we skip lookups (for now)
    -1 & x;
+
+    let u : u8 = 0;
+    u & 255;
 }
--- a/tests/ui/identity_op.stderr
+++ b/tests/ui/identity_op.stderr
@ -42,3 +42,9 @@ error: the operation is ineffective. Consider reducing it to `x`
 29 |     -1 & x;
   |     ^^^^^^

+error: the operation is ineffective. Consider reducing it to `u`
+  --> $DIR/identity_op.rs:32:5
+   |
+32 |     u & 255;
+   |     ^^^^^^^
+