correct fix for the old Bug#39955 (warnings in I_S.VARIABLES)

old fix only generated a warning for the *first* row
in the output

mysql-test/r/information_schema.result

@@ -1637,6 +1637,33 @@ drop table if exists t1;drop table if exists t1;
 drop table if exists t1;drop table if exists
 Warnings:
 Warning	1265	Data truncated for column 'VARIABLE_VALUE' at row 1
+select * from information_schema.global_variables where variable_name like 'init%' order by variable_name;
+VARIABLE_NAME	VARIABLE_VALUE
+INIT_CONNECT	drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists t1;
+drop table if exists t1;drop table if exists
+INIT_FILE	
+INIT_SLAVE	
+Warnings:
+Warning	1265	Data truncated for column 'VARIABLE_VALUE' at row #
 set global init_connect="";
 create table t0 select * from information_schema.global_status where VARIABLE_NAME='COM_SELECT';
 SELECT 1;

mysql-test/t/information_schema.test

@@ -1358,6 +1358,8 @@ drop table if exists t1;drop table if exists t1;\
 drop table if exists t1;drop table if exists t1;\
 drop table if exists t1;drop table if exists t1;";
 select * from information_schema.global_variables where variable_name='init_connect';
+--replace_regex /at row [123]/at row #/
+select * from information_schema.global_variables where variable_name like 'init%' order by variable_name;
 set global init_connect="";
 
 #

sql/sql_show.cc

@@ -3111,7 +3111,6 @@ static bool show_status_array(THD *thd, const char *wild,
           break;
         }
         table->field[1]->store(pos, (uint32) (end - pos), charset);
-        thd->count_cuted_fields= CHECK_FIELD_IGNORE;
         table->field[1]->set_notnull();
 
         mysql_mutex_unlock(&LOCK_global_system_variables);
@@ -3121,6 +3120,7 @@ static bool show_status_array(THD *thd, const char *wild,
           res= TRUE;
           goto end;
         }
+        thd->get_stmt_da()->inc_current_row_for_warning();
       }
     }
   }