[COMMITTED 07/19] gccrs: ast: Support outer attributes for AST::RangeExpr

[arthur . cohen]

From: Arthur Cohen <arthur.co...@embecosm.com>

gcc/rust/ChangeLog:

        * ast/rust-expr.h (class RangeExpr): Add empty outer attributes and 
allow getting them
        and setting them.
---
 gcc/rust/ast/rust-expr.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/gcc/rust/ast/rust-expr.h b/gcc/rust/ast/rust-expr.h
index 84cdfdb4678..69538df63e5 100644
--- a/gcc/rust/ast/rust-expr.h
+++ b/gcc/rust/ast/rust-expr.h
@@ -3004,6 +3004,10 @@ class RangeExpr : public ExprWithoutBlock
 {
   location_t locus;
 
+  // Some visitors still check for attributes on RangeExprs, and they will need
+  // to be supported in the future - so keep that for now
+  std::vector<Attribute> empty_attributes = {};
+
 protected:
   // outer attributes not allowed before range expressions
   RangeExpr (location_t locus) : locus (locus) {}
@@ -3013,15 +3017,11 @@ public:
 
   std::vector<Attribute> &get_outer_attrs () override final
   {
-    // RangeExpr cannot have any outer attributes
-    rust_assert (false);
+    return empty_attributes;
   }
 
   // should never be called - error if called
-  void set_outer_attrs (std::vector<Attribute> /* new_attrs */) override
-  {
-    rust_assert (false);
-  }
+  void set_outer_attrs (std::vector<Attribute> /* new_attrs */) override {}
 
   Expr::Kind get_expr_kind () const override { return Expr::Kind::Range; }
 };
-- 
2.49.0