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 a6bdf1a6e6a77a1dee52321cd7f6b6970bfdf234..fdc0c0a8e47df1408ffa1a889cb8ff2b7ddf92d1 100644 (file)
--- a/src/include/access/gin.h
+++ b/src/include/access/gin.h
@@ -4,7 +4,7 @@
  *
  * Copyright (c) 2006-2007, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/include/access/gin.h,v 1.14 2007/11/15 21:14:42 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/access/gin.h,v 1.15 2007/11/16 21:50:06 tgl Exp $
  *--------------------------------------------------------------------------
  */
 
@@ -453,7 +453,7 @@ typedef struct
    uint32      maxdepth;
    EntryAccumulator **stack;
    uint32      stackpos;
-   uint32      allocatedMemory;
+   long        allocatedMemory;
 
    uint32      length;
    EntryAccumulator *entryallocator;