diff -ur boost_1_79_0/boost/json/impl/array.ipp boost_1_79_0/boost/json/impl/array.ipp
--- boost_1_79_0/boost/json/impl/array.ipp	2022-04-06 17:02:43.000000000 -0400
+++ boost_1_79_0/boost/json/impl/array.ipp	2022-04-13 20:55:20.464359478 -0400
@@ -491,8 +491,11 @@
     auto const p = &(*t_)[0] +
         (pos - &(*t_)[0]);
     destroy(p, p + 1);
-    relocate(p, p + 1, 1);
     --t_->size;
+    if(t_->size > 0)
+        relocate(p, p + 1,
+            t_->size - (p -
+                &(*t_)[0]));
     return p;
 }
 
diff -ur boost_1_79_0/libs/json/test/array.cpp boost_1_79_0/libs/json/test/array.cpp
--- boost_1_79_0/libs/json/test/array.cpp	2022-04-06 17:02:43.000000000 -0400
+++ boost_1_79_0/libs/json/test/array.cpp	2022-04-13 20:53:32.671782680 -0400
@@ -1270,6 +1270,21 @@
     }
 
     void
+    testIssue692()
+    {
+	    array a;
+	    object obj;
+	    obj["test1"] = "hello";
+	    a.push_back(obj);
+	    a.push_back(obj);
+	    a.push_back(obj);
+	    a.push_back(obj);
+	    a.push_back(obj);
+	    while(a.size())
+		    a.erase(a.begin());
+    }
+
+    void
     run()
     {
         testDestroy();
@@ -1283,6 +1298,7 @@
         testExceptions();
         testEquality();
         testHash();
+        testIssue692();
     }
 };