[gcc r15-3897] Add virtual destructor to AbstractExpr

[Marc Poulhi?s via Gcc-cvs]

https://gcc.gnu.org/g:6f76ce80fa25559c9e1bd575190be80c1159d398

commit r15-3897-g6f76ce80fa25559c9e1bd575190be80c1159d398
Author: Owen Avery <powerboat9.ga...@gmail.com>
Date:   Tue Sep 3 16:11:58 2024 -0400

    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.ga...@gmail.com>

Diff:
---
 gcc/rust/checks/errors/borrowck/rust-bir.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/rust/checks/errors/borrowck/rust-bir.h 
b/gcc/rust/checks/errors/borrowck/rust-bir.h
index 4c298f147736..ed1f44686bc3 100644
--- a/gcc/rust/checks/errors/borrowck/rust-bir.h
+++ b/gcc/rust/checks/errors/borrowck/rust-bir.h
@@ -139,6 +139,8 @@ 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>