Fixed overrun in key cache if one tried to allocate a key cache

of more than 45G with a key_cache_block_size of 1024 or less.

The problem was that some of the arguments to my_multi_malloc() got to be
more than 4G.

Fix:
- Inntroduced my_multi_malloc_large() that can handle big regions.
- Changed MyISAM and Aria key caches to use my_multi_malloc_large().

I didn't change the default my_multi_malloc() as this would be a too big
patch and we don't allocate 4G blocks anywhere else.

1 files changed, 1 insertions, 0 deletions

diff --git a/include/my_sys.h b/include/my_sys.h
index 9913ee8c79b..741116a1dd5 100644
--- a/include/my_sys.h
+++ b/include/my_sys.h
@@ -168,6 +168,7 @@ extern void set_malloc_size_cb(MALLOC_SIZE_CB func);
 	/* defines when allocating data */
 extern void *my_malloc(size_t Size,myf MyFlags);
 extern void *my_multi_malloc(myf MyFlags, ...);
+extern void *my_multi_malloc_large(myf MyFlags, ...);
 extern void *my_realloc(void *oldpoint, size_t Size, myf MyFlags);
 extern void my_free(void *ptr);
 extern void *my_memdup(const void *from,size_t length,myf MyFlags);