Handle IfLetExprConseqElse in DefaultResolver

This relies on the DefaultASTVisitor visitor for IfLetExprConseqElse
performing a virtual call of the visitor for IfLetExpr, which doesn't
hold when DefaultASTVisitor is generated by the X-macro-DSL-system I
have in another patch.

gcc/rust/ChangeLog:

	* resolve/rust-default-resolver.cc (DefaultResolver::visit): Add
	visitor for IfLetExprConseqElse.
	* resolve/rust-default-resolver.h (DefaultResolver::visit):
	Likewise.

Signed-off-by: Owen Avery <[email protected]>

Author: powerboat9

gcc/rust/resolve/rust-default-resolver.cc

@@ -110,6 +110,13 @@ DefaultResolver::visit (AST::IfLetExpr &expr)
   ctx.scoped (Rib::Kind::Normal, expr.get_node_id (), inner_vis);
 }
 
+void
+DefaultResolver::visit (AST::IfLetExprConseqElse &expr)
+{
+  DefaultResolver::visit (static_cast<AST::IfLetExpr &> (expr));
+  visit (expr.get_else_block ());
+}
+
 void
 DefaultResolver::visit (AST::Trait &trait)
 {

gcc/rust/resolve/rust-default-resolver.h

@@ -49,6 +49,7 @@ class DefaultResolver : public AST::DefaultASTVisitor
   void visit (AST::ForLoopExpr &expr) override;
   virtual void visit_if_let_patterns (AST::IfLetExpr &expr);
   void visit (AST::IfLetExpr &expr) override;
+  void visit (AST::IfLetExprConseqElse &expr) override;
   void visit (AST::Trait &) override;
   // used to handle Self insertion in TopLevel
   virtual void maybe_insert_big_self (AST::Impl &) {}