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Tweak palloc/repalloc to allow zero bytes to be requested, as per recent

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proposal.  Eliminate several dozen now-unnecessary hacks to avoid palloc(0).
(It's likely there are more that I didn't find.)
This commit is contained in:
Tom Lane
2004-06-05 19:48:09 +00:00
parent 24a1e20f14
commit c3a153afed
19 changed files with 113 additions and 113 deletions
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4
src/backend/access/nbtree/nbtree.c
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@ -12,7 +12,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtree.c,v 1.117 2004/06/02 17:28:17 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtree.c,v 1.118 2004/06/05 19:48:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -693,7 +693,7 @@ btvacuumcleanup(PG_FUNCTION_ARGS)
/* No point in remembering more than MaxFSMPages pages */
maxFreePages = MaxFSMPages;
if ((BlockNumber) maxFreePages > num_pages)
maxFreePages = (int) num_pages + 1; /* +1 to avoid palloc(0) */
maxFreePages = (int) num_pages;
freePages = (BlockNumber *) palloc(maxFreePages * sizeof(BlockNumber));
nFreePages = 0;