From 55d8a338e362d3aa4448aa9bae776eb90ca1292a Mon Sep 17 00:00:00 2001
From: "James A. Kupsch" <kupsch@cs.wisc.edu>
Date: Thu, 16 Feb 2023 10:11:59 -0600
Subject: [PATCH] warning fix:  std::iterator is deprecated (#1394)

- replace std::iterator with in class type aliass for required types
---
 symtabAPI/h/Symtab.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/symtabAPI/h/Symtab.h b/symtabAPI/h/Symtab.h
index 7731c1572..bf6d8ab23 100644
--- a/symtabAPI/h/Symtab.h
+++ b/symtabAPI/h/Symtab.h
@@ -558,9 +558,15 @@ class SYMTAB_EXPORT Symtab : public LookupInterface,
        void erase(Symbol* s);
 
        // Iterator for the symbols. Do not use in parallel.
-       class iterator : public std::iterator<std::forward_iterator_tag,Symbol*> {
+       class iterator {
            master_t::iterator m;
        public:
+	   using iterator_category = std::forward_iterator_tag;
+	   using value_type = Symbol*;
+	   using difference_type = std::ptrdiff_t;
+	   using pointer = value_type*;
+	   using reference = value_type&;
+
            iterator(master_t::iterator i) : m(i) {}
            bool operator==(const iterator& x) { return m == x.m; }
            bool operator!=(const iterator& x) { return !operator==(x); }
-- 
2.21.0.windows.1