Fix label messages for E0133

src/librustc/middle/effect.rs

@@ -66,7 +66,7 @@ impl<'a, 'tcx> EffectCheckVisitor<'a, 'tcx> {
                 struct_span_err!(
                     self.tcx.sess, span, E0133,
                     "{} requires unsafe function or block", description)
-                    .span_label(span, &format!("unsafe call requires unsafe function or block"))
+                    .span_label(span, &description)
                     .emit();
             }
             UnsafeBlock(block_id) => {

src/test/compile-fail/E0133.rs

@@ -13,5 +13,5 @@ unsafe fn f() { return; }
 fn main() {
     f();
     //~^ ERROR E0133
-    //~| NOTE unsafe call requires unsafe function or block
+    //~| NOTE call to unsafe function
 }

src/test/compile-fail/issue-28776.rs

@@ -13,5 +13,5 @@ use std::ptr;
 fn main() {
     (&ptr::write)(1 as *mut _, 42);
     //~^ ERROR E0133
-    //~| NOTE unsafe call requires unsafe function or block
+    //~| NOTE call to unsafe function
 }

src/test/compile-fail/trait-safety-fn-body.rs

@@ -20,7 +20,7 @@ unsafe impl UnsafeTrait for *mut isize {
         // Unsafe actions are not made legal by taking place in an unsafe trait:
         *self += 1;
         //~^ ERROR E0133
-        //~| NOTE unsafe call requires unsafe function or block
+        //~| NOTE dereference of raw pointer
     }
 }
 

src/test/compile-fail/unsafe-const-fn.rs

@@ -18,7 +18,7 @@ const unsafe fn dummy(v: u32) -> u32 {
 
 const VAL: u32 = dummy(0xFFFF);
 //~^ ERROR E0133
-//~| NOTE unsafe call requires unsafe function or block
+//~| NOTE call to unsafe function
 
 fn main() {
     assert_eq!(VAL, 0xFFFF0000);