Add virtual destructor to AbstractExpr

gcc/rust/ChangeLog:

	* checks/errors/borrowck/rust-bir.h
	(class AbstractExpr): Add virtual destructor.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>

diff --git a/gcc/rust/checks/errors/borrowck/rust-bir.h b/gcc/rust/checks/errors/borrowck/rust-bir.h
index 3e4ea9a5d902a0ea56ed6dc0dbc0a4504ef2346f..f239465676cfb96e616c0ce95306c64d6abc0523 100644 (file)
--- a/gcc/rust/checks/errors/borrowck/rust-bir.h
+++ b/gcc/rust/checks/errors/borrowck/rust-bir.h
@@ -172,6 +172,8 @@ class AbstractExpr : public Visitable
 public:
   explicit AbstractExpr (ExprKind kind) : kind (kind) {}
   WARN_UNUSED_RESULT ExprKind get_kind () const { return kind; }
+
+  virtual ~AbstractExpr () {}
 };
 
 class InitializerExpr : public VisitableImpl<AbstractExpr, InitializerExpr>