Changed --log-warnings to be integer instead of boolean. Given --skip-log-warnings

will disable warnings, --log-warnings will increment warning level by one, or the
level can be given as an optional argument. Default level is 1.

Changed aborted connection warning to be logged only if the level is > 1.

sql/mysqld.cc

@@ -3944,11 +3944,11 @@ replicating a LOAD DATA INFILE command",
    0, 0, 0, 0},
   {"log-warnings", 'W', "Log some not critical warnings to the log file",
    (gptr*) &global_system_variables.log_warnings,
-   (gptr*) &max_system_variables.log_warnings, 0, GET_BOOL, NO_ARG, 1, 0, 0,
+   (gptr*) &max_system_variables.log_warnings, 0, GET_ULONG, OPT_ARG, 1, 0, 0,
    0, 0, 0},
   {"warnings", 'W', "Deprecated ; Use --log-warnings instead",
    (gptr*) &global_system_variables.log_warnings,
-   (gptr*) &max_system_variables.log_warnings, 0, GET_BOOL, NO_ARG, 1, 0, 0,
+   (gptr*) &max_system_variables.log_warnings, 0, GET_ULONG, OPT_ARG, 1, 0, 0,
    0, 0, 0},
   { "back_log", OPT_BACK_LOG,
     "The number of outstanding connection requests MySQL can have. This comes into play when the main MySQL thread gets very many connection requests in a very short time.",
@@ -4656,6 +4656,14 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
   case 'V':
     print_version();
     exit(0);
+  case 'W':
+    if (!argument)
+      global_system_variables.log_warnings++;
+    else if (argument == disabled_my_option)
+      global_system_variables.log_warnings= 0L;
+    else
+      global_system_variables.log_warnings= atoi(argument);
+    break;
   case 'I':
   case '?':
     usage();

sql/set_var.cc

@@ -133,7 +133,7 @@ sys_var_ulonglong_ptr	sys_key_buffer_size("key_buffer_size",
 					    fix_key_buffer_size);
 sys_var_bool_ptr	sys_local_infile("local_infile",
 					 &opt_local_infile);
-sys_var_thd_bool	sys_log_warnings("log_warnings", &SV::log_warnings);
+sys_var_thd_ulong	sys_log_warnings("log_warnings", &SV::log_warnings);
 sys_var_thd_ulong	sys_long_query_time("long_query_time",
 					     &SV::long_query_time);
 sys_var_thd_bool	sys_low_priority_updates("low_priority_updates",

sql/sql_class.h

@@ -333,8 +333,8 @@ struct system_variables
   ulong query_prealloc_size;
   ulong trans_alloc_block_size;
   ulong trans_prealloc_size;
+  ulong log_warnings;
 
-  my_bool log_warnings;
   my_bool low_priority_updates;
   my_bool new_mode;
   my_bool query_cache_wlock_invalidate;

sql/sql_parse.cc

@@ -742,7 +742,7 @@ pthread_handler_decl(handle_one_connection,arg)
     free_root(&thd->mem_root,MYF(0));
     if (net->error && net->vio != 0)
     {
-      if (!thd->killed && thd->variables.log_warnings)
+      if (!thd->killed && thd->variables.log_warnings > 1)
 	sql_print_error(ER(ER_NEW_ABORTING_CONNECTION),
 			thd->thread_id,(thd->db ? thd->db : "unconnected"),
 			thd->user ? thd->user : "unauthenticated",