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.
parent 48dfd5c7
No related merge requests found
......@@ -13014,7 +13014,8 @@ 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;
......@@ -13130,7 +13131,7 @@ 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;
/*
......@@ -13176,7 +13177,7 @@ 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;
}
......
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