MDEV-12390 Wrong error line numbers reported with sql_mode=IGNORE_SPACE

mysql-test/r/sql_mode.result

@@ -759,3 +759,24 @@ a	b
 1	NULL
 1	NULL
 DROP TABLE t1;
+#
+# MDEV-12390 Wrong error line numbers reported with sql_mode=IGNORE_SPACE
+#
+SET sql_mode=IGNORE_SPACE;
+CREATE PROCEDURE p1()
+BEGIN
+SELECT 1+1;
+syntax error;
+END;
+$$
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'error;
+END' at line 4
+SET sql_mode=DEFAULT;
+CREATE PROCEDURE p1()
+BEGIN
+SELECT 1+1;
+syntax error;
+END;
+$$
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'error;
+END' at line 4

mysql-test/t/sql_mode.test

@@ -527,3 +527,30 @@ ALTER TABLE t1 ADD b INT;
 EXECUTE stmt;
 SELECT * FROM t1;
 DROP TABLE t1;
+
+--echo #
+--echo # MDEV-12390 Wrong error line numbers reported with sql_mode=IGNORE_SPACE
+--echo #
+
+SET sql_mode=IGNORE_SPACE;
+DELIMITER $$;
+--error ER_PARSE_ERROR
+CREATE PROCEDURE p1()
+BEGIN
+  SELECT 1+1;
+  syntax error;
+END;
+$$
+DELIMITER ;$$
+
+
+SET sql_mode=DEFAULT;
+DELIMITER $$;
+--error ER_PARSE_ERROR
+CREATE PROCEDURE p1()
+BEGIN
+  SELECT 1+1;
+  syntax error;
+END;
+$$
+DELIMITER ;$$

sql/sql_lex.cc

@@ -1448,7 +1448,10 @@ static int lex_one_token(YYSTYPE *yylval, THD *thd)
           below by checking start != lex->ptr.
         */
         for (; state_map[(uchar) c] == MY_LEX_SKIP ; c= lip->yyGet())
-          ;
+        {
+          if (c == '\n')
+            lip->yylineno++;
+        }
       }
       if (start == lip->get_ptr() && c == '.' &&
           ident_map[(uchar) lip->yyPeek()])