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Support varlena fields with single-byte headers and unaligned storage.

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This commit breaks any code that assumes that the mere act of forming a tuple
(without writing it to disk) does not "toast" any fields.  While all available
regression tests pass, I'm not totally sure that we've fixed every nook and
cranny, especially in contrib.

Greg Stark with some help from Tom Lane
This commit is contained in:
Tom Lane
2007-04-06 04:21:44 +00:00
parent d44163953c
commit 3e23b68dac
38 changed files with 1802 additions and 805 deletions
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6
src/backend/utils/init/flatfiles.c
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@ -23,7 +23,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/backend/utils/init/flatfiles.c,v 1.24 2007/01/05 22:19:43 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/init/flatfiles.c,v 1.25 2007/04/06 04:21:43 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -467,7 +467,7 @@ write_auth_file(Relation rel_authid, Relation rel_authmem)
auth_info[curr_role].rolpassword = DatumGetCString(DirectFunctionCall1(textout, datum));
/* assume passwd has attlen -1 */
off = att_addlength(off, -1, tp + off);
off = att_addlength_pointer(off, -1, tp + off);
}
if (HeapTupleHasNulls(tuple) &&
@ -482,7 +482,7 @@ write_auth_file(Relation rel_authid, Relation rel_authmem)
* rolvaliduntil is timestamptz, which we assume is double
* alignment and pass-by-reference.
*/
off = att_align(off, 'd');
off = att_align_nominal(off, 'd');
datum = PointerGetDatum(tp + off);
auth_info[curr_role].rolvaliduntil = DatumGetCString(DirectFunctionCall1(timestamptz_out, datum));
}