merge with 3.23 to get:

- Fix for empty table/column names


mysql-test/t/create.test:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/ha_innodb.cc:
  Auto merged
sql/table.cc:
  Auto merged
tests/grant.pl:
  Auto merged
sql/filesort.cc:
  merge with 3.23
sql/sql_table.cc:
  merge with 3.23
tests/grant.res:
  merge with 3.23

1 files changed, 6 insertions, 1 deletions

diff --git a/sql/table.cc b/sql/table.cc
index 1635c85eca8..d1e2c86e5ab 100644
--- a/sql/table.cc
+++ b/sql/table.cc
@@ -1164,6 +1164,8 @@ bool check_db_name(char *name)
 bool check_table_name(const char *name, uint length)
 {
   const char *end= name+length;
+  if (!length || length > NAME_LEN)
+    return 1;
 
   while (name != end)
   {
@@ -1187,6 +1189,8 @@ bool check_table_name(const char *name, uint length)
 
 bool check_column_name(const char *name)
 {
+  const char *start= name;
+
   while (*name)
   {
 #if defined(USE_MB) && defined(USE_MB_IDENT)
@@ -1204,7 +1208,8 @@ bool check_column_name(const char *name)
       return 1;
     name++;
   }
-  return 0;
+  /* Error if empty or too long column name */
+  return (name == start || (uint) (name - start) > NAME_LEN);
 }
 
 /*