Index: dccp/dccp.cc
--- dccp/dccp.cc.orig
+++ dccp/dccp.cc
@@ -34,7 +34,7 @@
 #include "random.h"
 
 //string representation of types
-char* DCCPAgent::state_str_[DCCP_NUM_STATES] =
+const char* DCCPAgent::state_str_[DCCP_NUM_STATES] =
 {"CLOSED", "LISTEN", "RESPOND", "REQUEST", "OPEN", "CLOSEREQ", "CLOSING"};
 
 int DCCPAgent::hdr_size_[DCCP_NUM_PTYPES] =
@@ -42,10 +42,10 @@ int DCCPAgent::hdr_size_[DCCP_NUM_PTYPES] =
   DCCP_ACK_HDR_SIZE, DCCP_DACK_HDR_SIZE, DCCP_CREQ_HDR_SIZE,
   DCCP_CLOSE_HDR_SIZE, DCCP_RESET_HDR_SIZE };
 
-char* DCCPAgent::ptype_str_[DCCP_NUM_PTYPES] =
+const char* DCCPAgent::ptype_str_[DCCP_NUM_PTYPES] =
 { "REQUEST", "RESPONSE", "DATA", "ACK", "DATAACK", "CLOSEREQ", "CLOSE", "RESET" };
 
-char* DCCPAgent::reset_reason_str_[DCCP_NUM_RESET_REASONS]=
+const char* DCCPAgent::reset_reason_str_[DCCP_NUM_RESET_REASONS]=
 { "Unspecified" , "Closed", "Invalid Packet", "Option Error", "Feature Error",
   "Connection Refused", "Bad Service Name", "Too Busy", "Bad Init Cookie",
   "Unknown", "Unanswered Challenge", "Fruitless Negotiation",
@@ -53,7 +53,7 @@ char* DCCPAgent::reset_reason_str_[DCCP_NUM_RESET_REAS
   "Mandatory Failure"
 };
 
-char* DCCPAgent::feature_location_str_[DCCP_NUM_FEAT_LOCS] =
+const char* DCCPAgent::feature_location_str_[DCCP_NUM_FEAT_LOCS] =
 { "LOCAL", "REMOTE" };
 
 //OTcl linkage for DCCP agent