dnsdist: Keep the buffer's constness when passing it to write()

diff --git a/pdns/tcpiohandler.hh b/pdns/tcpiohandler.hh
index bc4a85f4101292027d738bf57b05ed05d2d73775..3e7f52b081553bc239ff9628f4e608e6692d7b68 100644 (file)
--- a/pdns/tcpiohandler.hh
+++ b/pdns/tcpiohandler.hh
@@ -245,7 +245,7 @@ public:
     }
 
     do {
-      ssize_t res = ::write(d_socket, reinterpret_cast<char*>(&buffer.at(pos)), toWrite - pos);
+      ssize_t res = ::write(d_socket, reinterpret_cast<const char*>(&buffer.at(pos)), toWrite - pos);
       if (res == 0) {
         throw runtime_error("EOF while sending message");
       }