switch back to 'bytes'

Author: RalfJung

src/librustc_mir/interpret/validity.rs

@@ -788,7 +788,7 @@ impl<'rt, 'mir, 'tcx, M: Machine<'mir, 'tcx>> ValueVisitor<'mir, 'tcx, M>
                                     .unwrap();
                                 self.path.push(PathElem::ArrayElem(i));
 
-                                throw_validation_failure!("uninitialized value", self.path)
+                                throw_validation_failure!("uninitialized bytes", self.path)
                             }
                             // Other errors shouldn't be possible
                             _ => return Err(err),

src/test/ui/consts/const-eval/union-ice.stderr

@@ -27,7 +27,7 @@ LL | |         unsafe { UNION.field3 },
 ...  |
 LL | |     a: 42,
 LL | | };
-   | |__^ type validation failed: encountered uninitialized value at .b[1]
+   | |__^ type validation failed: encountered uninitialized bytes at .b[1]
    |
    = note: The rules on what exactly is undefined behavior aren't clear, so this check might be overzealous. Please open an issue on the rustc repository if you believe it should not be considered undefined behavior.