diff options
Diffstat (limited to 'innobase/include/univ.i')
| -rw-r--r-- | innobase/include/univ.i | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/innobase/include/univ.i b/innobase/include/univ.i index e7d93a594c1..4c1ca929aa8 100644 --- a/innobase/include/univ.i +++ b/innobase/include/univ.i @@ -204,8 +204,12 @@ headers may define 'bool' differently. Do not assume that 'bool' is a ulint! */ #endif /* The following number as the length of a logical field means that the field -has the SQL NULL as its value. */ -#define UNIV_SQL_NULL ULINT_UNDEFINED +has the SQL NULL as its value. NOTE that because we assume that the length +of a field is a 32-bit integer when we store it, for example, to an undo log +on disk, we must have also this number fit in 32 bits, also in 64-bit +computers! */ + +#define UNIV_SQL_NULL ULINT32_UNDEFINED /* Lengths which are not UNIV_SQL_NULL, but bigger than the following number indicate that a field contains a reference to an externally |