New upstream version 1.59.0+dfsg1

[rustc.git] / compiler / rustc_mir_dataflow / src / move_paths / builder.rs

diff --git a/compiler/rustc_mir_dataflow/src/move_paths/builder.rs b/compiler/rustc_mir_dataflow/src/move_paths/builder.rs
index e404b49ecb93173f33ca1062399967f3f6a6075b..2e00b4f9a5e7cbb4ba1ad3a7e3d122963d9c99c1 100644 (file)
--- a/compiler/rustc_mir_dataflow/src/move_paths/builder.rs
+++ b/compiler/rustc_mir_dataflow/src/move_paths/builder.rs
@@ -343,19 +343,7 @@ impl<'b, 'a, 'tcx> Gatherer<'b, 'a, 'tcx> {
             | Rvalue::AddressOf(..)
             | Rvalue::Discriminant(..)
             | Rvalue::Len(..)
-            | Rvalue::NullaryOp(NullOp::SizeOf | NullOp::AlignOf, _)
-            | Rvalue::NullaryOp(NullOp::Box, _) => {
-                // This returns an rvalue with uninitialized contents. We can't
-                // move out of it here because it is an rvalue - assignments always
-                // completely initialize their place.
-                //
-                // However, this does not matter - MIR building is careful to
-                // only emit a shallow free for the partially-initialized
-                // temporary.
-                //
-                // In any case, if we want to fix this, we have to register a
-                // special move and change the `statement_effect` functions.
-            }
+            | Rvalue::NullaryOp(NullOp::SizeOf | NullOp::AlignOf, _) => {}
         }
     }
 
@@ -419,6 +407,7 @@ impl<'b, 'a, 'tcx> Gatherer<'b, 'a, 'tcx> {
                 options: _,
                 line_spans: _,
                 destination: _,
+                cleanup: _,
             } => {
                 for op in operands {
                     match *op {