--- old/src/hotspot/share/oops/symbol.hpp	2020-07-08 11:40:15.690535090 -0700
+++ new/src/hotspot/share/oops/symbol.hpp	2020-07-08 11:40:15.410524550 -0700
@@ -125,11 +125,6 @@
     return (int)heap_word_size(byte_size(length));
   }
 
-  void byte_at_put(int index, u1 value) {
-    assert(index >=0 && index < length(), "symbol index overflow");
-    _body[index] = value;
-  }
-
   Symbol(const u1* name, int length, int refcount);
   void* operator new(size_t size, int len) throw();
   void* operator new(size_t size, int len, Arena* arena) throw();