Detect comment with command using extra delimiter

client/mysqltest.c

@@ -3901,6 +3901,22 @@ void get_query_type(struct st_query* q)
         q->type != Q_DISABLE_PARSING)
       q->type= Q_COMMENT;
   }
+  else if (q->type == Q_COMMENT_WITH_COMMAND &&
+           q->query[q->first_word_len-1] == ';')
+  {
+    /*
+       Detect comment with command using extra delimiter
+       Ex --disable_query_log;
+                             ^ Extra delimiter causing the command
+                               to be skipped
+    */
+    save= q->query[q->first_word_len-1];
+    q->query[q->first_word_len-1]= 0;
+    type= find_type(q->query, &command_typelib, 1+2);
+    q->query[q->first_word_len-1]= save;
+    if (type > 0)
+      die("Extra delimiter \";\" found");
+  }
   DBUG_VOID_RETURN;
 }
 

mysql-test/include/have_lowercase0.inc

 --require r/lowercase0.require
---disable_query_log;
+--disable_query_log
 show variables like "lower_case_%";
---enable_query_log;
+--enable_query_log

mysql-test/r/mysqltest.result

@@ -152,6 +152,7 @@ mysqltest: At line 1: End of line junk detected: "6"
 mysqltest: At line 1: End of line junk detected: "6"
 mysqltest: At line 1: Missing delimiter
 mysqltest: At line 1: Extra delimiter ";" found
+mysqltest: At line 1: Extra delimiter ";" found
 MySQL
 "MySQL"
 MySQL: The world''s most popular open source database

mysql-test/t/mysqltest.test

@@ -369,6 +369,8 @@ select 3 from t1 ;
 #
 --error 1
 --exec echo "--sleep 4;" | $MYSQL_TEST 2>&1
+--error 1
+--exec echo "--disable_query_log;" | $MYSQL_TEST 2>&1
 
 
 # Allow trailing # comment
@@ -592,7 +594,7 @@ while ($num)
    --source var/tmp/sourced1.sql
    dec $num;
 }
---enable_abort_on_error;
+--enable_abort_on_error
 --enable_query_log
 
 # ----------------------------------------------------------------------------