diff options
Diffstat (limited to 'src/include/utils/typcache.h')
| -rw-r--r-- | src/include/utils/typcache.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/include/utils/typcache.h b/src/include/utils/typcache.h index e2f8c9ce3cf..eb93c1d3b54 100644 --- a/src/include/utils/typcache.h +++ b/src/include/utils/typcache.h @@ -39,7 +39,9 @@ typedef struct TypeCacheEntry * Information obtained from opfamily entries * * These will be InvalidOid if no match could be found, or if the - * information hasn't yet been requested. + * information hasn't yet been requested. Also note that for array and + * composite types, typcache.c checks that the contained types are + * comparable or hashable before allowing eq_opr etc to become set. */ Oid btree_opf; /* the default btree opclass' family */ Oid btree_opintype; /* the default btree opclass' opcintype */ @@ -55,8 +57,8 @@ typedef struct TypeCacheEntry * Pre-set-up fmgr call info for the equality operator, the btree * comparison function, and the hash calculation function. These are kept * in the type cache to avoid problems with memory leaks in repeated calls - * to array_eq, array_cmp, hash_array. There is not currently a need to - * maintain call info for the lt_opr or gt_opr. + * to functions such as array_eq, array_cmp, hash_array. There is not + * currently a need to maintain call info for the lt_opr or gt_opr. */ FmgrInfo eq_opr_finfo; FmgrInfo cmp_proc_finfo; @@ -69,6 +71,9 @@ typedef struct TypeCacheEntry */ TupleDesc tupDesc; + /* Private data, for internal use of typcache.c only */ + int flags; /* flags about what we've computed */ + /* * Private information about an enum type. NULL if not enum or * information hasn't been requested. |