From 39a114e400c17b3e3013804583a5507b749d4a60 Mon Sep 17 00:00:00 2001 From: Oliver Scherer Date: Tue, 18 Aug 2020 13:57:32 +0200 Subject: [PATCH] Explain why we are creating an aggregate constant --- src/librustc_mir/transform/const_prop.rs | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/librustc_mir/transform/const_prop.rs b/src/librustc_mir/transform/const_prop.rs index 7b4582abe5e..4c79c8f28a8 100644 --- a/src/librustc_mir/transform/const_prop.rs +++ b/src/librustc_mir/transform/const_prop.rs @@ -856,6 +856,8 @@ fn replace_with_const( }); if let Some(Some(alloc)) = alloc { + // Assign entire constant in a single statement. + // We can't use aggregates, as we are post-aggregate-lowering. *rval = Rvalue::Use(Operand::Constant(Box::new(Constant { span: source_info.span, user_ty: None, -- 2.44.0