GIN index build's allocatedMemory counter needs to be long, not uint32.

Else, in a 64-bit machine with maintenance_work_mem set to above 4Gb,
the counter overflows and we never recognize having reached the
maintenance_work_mem limit.  I believe this explains out-of-memory
failure recently reported by Sean Davis.

This is a bug, so backpatch to 8.2.

diff --git a/src/include/access/gin.h b/src/include/access/gin.h
index c37b3672781772d62b79fbe65f46fd2d7766815d..dfd955627843b8a96978842772ecc94ccc6700e2 100644 (file)
--- a/src/include/access/gin.h
+++ b/src/include/access/gin.h
@@ -3,7 +3,7 @@
  *       header file for postgres inverted index access method implementation.
  *
  *     Copyright (c) 2006, PostgreSQL Global Development Group
- *     $PostgreSQL: pgsql/src/include/access/gin.h,v 1.9 2006/10/05 17:57:40 tgl Exp $
+ *     $PostgreSQL: pgsql/src/include/access/gin.h,v 1.9.2.1 2007/11/16 21:50:13 tgl Exp $
  *--------------------------------------------------------------------------
  */
 
@@ -450,7 +450,7 @@ typedef struct
        uint32          maxdepth;
        EntryAccumulator **stack;
        uint32          stackpos;
-       uint32          allocatedMemory;
+       long            allocatedMemory;
 
        uint32          length;
        EntryAccumulator *entryallocator;