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MDEV-11551 Server crashes in Field::is_real_null

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sometimes table->s->stored_fields is less than table->s->null_fields
This commit is contained in:
Sergei Golubchik
2017-01-12 00:33:21 +01:00
parent 7e2f9d092d
commit 5dfab33c4e
3 changed files with 25 additions and 1 deletions
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2
sql/sql_trigger.cc
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@ -1082,7 +1082,7 @@ bool Table_triggers_list::prepare_record_accessors(TABLE *table)
&& (table->s->stored_fields != table->s->null_fields))
{
int null_bytes= (table->s->stored_fields - table->s->null_fields + 7)/8;
int null_bytes= (table->s->fields - table->s->null_fields + 7)/8;
if (!(extra_null_bitmap= (uchar*)alloc_root(&table->mem_root, null_bytes)))
return 1;
if (!(record0_field= (Field **)alloc_root(&table->mem_root,