Use a reference wrapper to please GCC 4.8

gcc/rust/ChangeLog: * backend/rust-compile-expr.cc (CompileExpr::visit): Change call. (CompileExpr::resolve_operator_overload): Update function arguments. * backend/rust-compile-expr.h: Change the function's prototype to use a reference wrapper instead of a reference within the optional. Signed-off-by: Pierre-Emmanuel Patry <[email protected]>
Rust-GCC · Nov 20, 2024 · b41ffb2 · b41ffb2
1 parent bd257b0
commit b41ffb2
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Showing 2 changed files with 11 additions and 10 deletions.
diff --git a/gcc/rust/backend/rust-compile-expr.cc b/gcc/rust/backend/rust-compile-expr.cc
@@ -31,6 +31,7 @@
 #include "convert.h"
 #include "print-tree.h"
 #include "rust-system.h"
+#include <functional>
 
 namespace Rust {
 namespace Compile {
@@ -152,8 +153,9 @@ CompileExpr::visit (HIR::ArithmeticOrLogicalExpr &expr)
     {
       auto lang_item_type
 	= LangItem::OperatorToLangItem (expr.get_expr_type ());
-      translated = resolve_operator_overload (lang_item_type, expr, lhs, rhs,
-					      expr.get_lhs (), expr.get_rhs ());
+      translated = resolve_operator_overload (
+	lang_item_type, expr, lhs, rhs, expr.get_lhs (),
+	tl::optional<std::reference_wrapper<HIR::Expr>> (expr.get_rhs ()));
       return;
     }
 
@@ -1476,10 +1478,9 @@ CompileExpr::get_receiver_from_dyn (const TyTy::DynamicObjectType *dyn,
 }
 
 tree
-CompileExpr::resolve_operator_overload (LangItem::Kind lang_item_type,
-					HIR::OperatorExprMeta expr, tree lhs,
-					tree rhs, HIR::Expr &lhs_expr,
-					tl::optional<HIR::Expr &> rhs_expr)
+CompileExpr::resolve_operator_overload (
+  LangItem::Kind lang_item_type, HIR::OperatorExprMeta expr, tree lhs, tree rhs,
+  HIR::Expr &lhs_expr, tl::optional<std::reference_wrapper<HIR::Expr>> rhs_expr)
 {
   TyTy::FnType *fntype;
   bool is_op_overload = ctx->get_tyctx ()->lookup_operator_overload (

diff --git a/gcc/rust/backend/rust-compile-expr.h b/gcc/rust/backend/rust-compile-expr.h
@@ -96,10 +96,10 @@ class CompileExpr : private HIRCompileBase, protected HIR::HIRExpressionVisitor
 			      TyTy::BaseType *receiver, TyTy::FnType *fntype,
 			      tree receiver_ref, location_t expr_locus);
 
-  tree resolve_operator_overload (LangItem::Kind lang_item_type,
-				  HIR::OperatorExprMeta expr, tree lhs,
-				  tree rhs, HIR::Expr &lhs_expr,
-				  tl::optional<HIR::Expr &> rhs_expr);
+  tree resolve_operator_overload (
+    LangItem::Kind lang_item_type, HIR::OperatorExprMeta expr, tree lhs,
+    tree rhs, HIR::Expr &lhs_expr,
+    tl::optional<std::reference_wrapper<HIR::Expr>> rhs_expr);
 
   tree compile_bool_literal (const HIR::LiteralExpr &expr,
 			     const TyTy::BaseType *tyty);