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-rw-r--r--sql/sql_type.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/sql_type.cc b/sql/sql_type.cc
index 6a1ccbbbd22..8ee4572a422 100644
--- a/sql/sql_type.cc
+++ b/sql/sql_type.cc
@@ -9258,7 +9258,7 @@ Type_handler_general_purpose_int::partition_field_append_value(
const
{
DBUG_ASSERT(item_expr->cmp_type() == INT_RESULT);
- StringBuffer<21> tmp;
+ StringBuffer<LONGLONG_BUFFER_SIZE> tmp;
longlong value= item_expr->val_int();
tmp.set(value, system_charset_info);
return str->append(tmp);