--- binutils.orig/libiberty/d-demangle.c	2022-11-30 14:25:36.976876338 +0000
+++ binutils-2.36.1/libiberty/d-demangle.c	2022-11-30 14:26:37.546690548 +0000
@@ -380,7 +380,7 @@ dlang_symbol_backref (string *decl, cons
 
   /* Must point to a simple identifier.  */
   backref = dlang_number (backref, &len);
-  if (backref == NULL)
+  if (backref == NULL || strlen (backref) < len) 
     return NULL;
 
   backref = dlang_lname (decl, backref, len);