type

Author: ahorek

src/main/java/org/jruby/ext/openssl/Cipher.java

@@ -68,6 +68,7 @@
 import org.jruby.runtime.builtin.IRubyObject;
 import org.jruby.runtime.Visibility;
 import org.jruby.util.ByteList;
+import org.jruby.util.TypeConverter;
 
 import static org.jruby.ext.openssl.OpenSSL.*;
 
@@ -1152,6 +1153,7 @@ public IRubyObject update(final ThreadContext context, final IRubyObject arg, IR
         if( buffer == null ) {
             return RubyString.newString(runtime, str);
         } else {
+            buffer = TypeConverter.checkStringType(context.runtime, buffer);
             return ((RubyString) buffer).replace(RubyString.newString(runtime, str));
         }
     }