Index: tool/lemon.c
==================================================================
--- tool/lemon.c
+++ tool/lemon.c
@@ -1303,11 +1303,11 @@
 */
 
 /*
 ** Return a pointer to the next structure in the linked list.
 */
-#define NEXT(A) (*(char**)(((int)A)+offset))
+#define NEXT(A) (*(char**)(((unsigned long)A)+offset))
 
 /*
 ** Inputs:
 **   a:       A sorted, null-terminated linked list.  (May be null).
 **   b:       A sorted, null-terminated linked list.  (May be null).
@@ -1377,15 +1377,15 @@
 char *msort(list,next,cmp)
 char *list;
 char **next;
 int (*cmp)();
 {
-  int offset;
+  unsigned long offset;
   char *ep;
   char *set[LISTSIZE];
   int i;
-  offset = (int)next - (int)list;
+  offset = (unsigned long)next - (unsigned long)list;
   for(i=0; i<LISTSIZE; i++) set[i] = 0;
   while( list ){
     ep = list;
     list = NEXT(list);
     NEXT(ep) = 0;
@@ -1529,11 +1529,11 @@
       case OPT_FDBL:
         dv = strtod(cp,&end);
         if( *end ){
           if( err ){
             fprintf(err,"%sillegal character in floating-point argument.\n",emsg);
-            errline(i,((int)end)-(int)argv[i],err);
+            errline(i,((unsigned long)end)-(unsigned long)argv[i],err);
           }
           errcnt++;
         }
         break;
       case OPT_INT:
@@ -1540,11 +1540,11 @@
       case OPT_FINT:
         lv = strtol(cp,&end,0);
         if( *end ){
           if( err ){
             fprintf(err,"%sillegal character in integer argument.\n",emsg);
-            errline(i,((int)end)-(int)argv[i],err);
+            errline(i,((unsigned long)end)-(unsigned long)argv[i],err);
           }
           errcnt++;
         }
         break;
       case OPT_STR:
@@ -2623,11 +2623,11 @@
   char *tpltname;
   char *cp;
 
   cp = strrchr(lemp->filename,'.');
   if( cp ){
-    sprintf(buf,"%.*s.lt",(int)cp-(int)lemp->filename,lemp->filename);
+    sprintf(buf,"%.*s.lt",(unsigned long)cp-(unsigned long)lemp->filename,lemp->filename);
   }else{
     sprintf(buf,"%s.lt",lemp->filename);
   }
   if( access(buf,004)==0 ){
     tpltname = buf;