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Fix portability problems recently exposed by regression tests on Alphas.

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1. Distinguish cases where a Datum representing a tuple datatype is an OID
from cases where it is a pointer to TupleTableSlot, and make sure we use
the right typlen in each case.
2. Make fetchatt() and related code support 8-byte by-value datatypes on
machines where Datum is 8 bytes.  Centralize knowledge of the available
by-value datatype sizes in two macros in tupmacs.h, so that this will be
easier if we ever have to do it again.
This commit is contained in:
Tom Lane
2000-12-27 23:59:14 +00:00
parent 97799fc475
commit 8609d4abf2
23 changed files with 497 additions and 660 deletions
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4
src/backend/access/heap/heapam.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.101 2000/12/11 09:14:03 inoue Exp $
* $Header: /cvsroot/pgsql/src/backend/access/heap/heapam.c,v 1.102 2000/12/27 23:59:10 tgl Exp $
*
*
* INTERFACE ROUTINES
@ -537,7 +537,7 @@ fastgetattr(HeapTuple tup, int attnum, TupleDesc tupleDesc,
(
(tupleDesc)->attrs[(attnum) - 1]->attcacheoff >= 0 ?
(
(Datum) fetchatt(&((tupleDesc)->attrs[(attnum) - 1]),
fetchatt((tupleDesc)->attrs[(attnum) - 1],
(char *) (tup)->t_data + (tup)->t_data->t_hoff +
(tupleDesc)->attrs[(attnum) - 1]->attcacheoff)
)