--- pcre3-8.02.orig/pcrecpp.h
+++ pcre3-8.02/pcrecpp.h
@@ -658,6 +658,8 @@
  private:
 
   void Init(const string& pattern, const RE_Options* options);
+  // Old version from PCRE 6.x, for compatibility
+  void Init(const char *pattern, const RE_Options* options);
   void Cleanup();
 
   // Match against "text", filling in "vec" (up to "vecsize" * 2/3) with