From: Date: June 29 2007 1:37pm
Subject: bk commit into 5.0 tree (kaa:1.2405) BUG#29419
List-Archive: http://lists.mysql.com/commits/29938
X-Bug: 29419
Message-Id: <20070629113743.CE29127E49@polly.local>

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5.0 repository of kaa. When kaa does a push these changes will
be propagated to the main repository and, within 24 hours after the
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ChangeSet@stripped, 2007-06-29 15:37:36+04:00, kaa@stripped +1 -0
  Bug #29419 "Specifying a join_buffer > 4GB on 64 bit machines not possible."
  
  Use size_t instead of uint when calculating join buffer size, because uint can be overflown on 64-bit platforms and join_buffer_size > 4 GB.
  
  The test case for this bug is a part of the test suite for bug #5731.

  sql/sql_select.cc@stripped, 2007-06-29 15:37:33+04:00, kaa@stripped +4 -3
    Use size_t instead of uint when calculating join buffer size, because uint can be overflown on 64-bit platforms and join_buffer_size > 4G.

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	kaa
# Host:	polly.local
# Root:	/home/kaa/src/maint/bug5731/my50-bug5731

--- 1.489/sql/sql_select.cc	2007-02-06 16:43:58 +03:00
+++ 1.490/sql/sql_select.cc	2007-06-29 15:37:33 +04:00
@@ -12776,7 +12776,8 @@ static int
 join_init_cache(THD *thd,JOIN_TAB *tables,uint table_count)
 {
   reg1 uint i;
-  uint length,blobs,size;
+  uint length, blobs;
+  size_t size;
   CACHE_FIELD *copy,**blob_ptr;
   JOIN_CACHE  *cache;
   JOIN_TAB *join_tab;
@@ -12892,7 +12893,7 @@ store_record_in_cache(JOIN_CACHE *cache)
   length=cache->length;
   if (cache->blobs)
     length+=used_blob_length(cache->blob_ptr);
-  if ((last_record=(length+cache->length > (uint) (cache->end - pos))))
+  if ((last_record= (length + cache->length > (size_t) (cache->end - pos))))
     cache->ptr_record=cache->records;
 
   /*
@@ -12938,7 +12939,7 @@ store_record_in_cache(JOIN_CACHE *cache)
     }
   }
   cache->pos=pos;
-  return last_record || (uint) (cache->end -pos) < cache->length;
+  return last_record || (size_t) (cache->end - pos) < cache->length;
 }