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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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4
src/backend/utils/adt/pg_lzcompress.c
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@@ -166,7 +166,7 @@
*
* Copyright (c) 1999-2007, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/utils/adt/pg_lzcompress.c,v 1.25 2007/02/27 23:48:08 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/pg_lzcompress.c,v 1.26 2007/04/06 04:21:43 tgl Exp $
* ----------
*/
#include "postgres.h"
@@ -618,7 +618,7 @@ pglz_compress(const char *source, int32 slen, PGLZ_Header *dest,
/*
* Success - need only fill in the actual length of the compressed datum.
*/
SET_VARSIZE(dest, result_size + sizeof(PGLZ_Header));
SET_VARSIZE_COMPRESSED(dest, result_size + sizeof(PGLZ_Header));
return true;
}