Proper fix for SHOW VARS on 64-bit systems

sql/mysqld.cc

@@ -3110,7 +3110,7 @@ struct show_var_st init_vars[]= {
 #endif
   {"interactive_timeout",     (char*) &net_interactive_timeout,     SHOW_LONG},
   {"join_buffer_size",        (char*) &join_buff_size,              SHOW_LONG},
-  {"key_buffer_size",         (char*) &keybuff_size,                SHOW_LONG},
+  {"key_buffer_size",         (char*) &keybuff_size,                SHOW_LONG_AS_LONGLONG},
   {"language",                language,                             SHOW_CHAR},
   {"large_files_support",     (char*) &opt_large_files,             SHOW_BOOL},	
 #ifdef HAVE_MLOCKALL

sql/sql_show.cc

@@ -1145,7 +1145,10 @@ int mysqld_show(THD *thd, const char *wild, show_var_st *variables)
       switch (variables[i].type){
       case SHOW_LONG:
       case SHOW_LONG_CONST:
-        net_store_data(&packet2,(int32) *(ulong*) variables[i].value);
+        net_store_data(&packet2,(uint32) *(ulong*) variables[i].value);
+        break;
+      case SHOW_LONG_AS_LONGLONG:
+        net_store_data(&packet2,(longlong) *(ulong*) variables[i].value);
         break;
       case SHOW_BOOL:
         net_store_data(&packet2,(ulong) *(bool*) variables[i].value ?

sql/structs.h

@@ -125,7 +125,7 @@ typedef struct {
 
 enum SHOW_TYPE { SHOW_LONG,SHOW_CHAR,SHOW_INT,SHOW_CHAR_PTR,SHOW_BOOL,
 		 SHOW_MY_BOOL,SHOW_OPENTABLES,SHOW_STARTTIME,SHOW_QUESTION,
-		 SHOW_LONG_CONST, SHOW_INT_CONST, SHOW_HAVE};
+		 SHOW_LONG_CONST, SHOW_INT_CONST, SHOW_HAVE, SHOW_LONG_AS_LONGLONG};
 
 enum SHOW_COMP_OPTION { SHOW_OPTION_YES, SHOW_OPTION_NO, SHOW_OPTION_DISABLED};