mem0mem.c:

  Add more diagnostic code to cath possible memory corruption

innobase/mem/mem0mem.c

@@ -50,7 +50,7 @@ of the blocks stay the same. An exception is, of course, the case
 where the caller requests a memory buffer whose size is
 bigger than the threshold. In that case a block big enough must
 be allocated.
-
+ 
 The heap is physically arranged so that if the current block
 becomes full, a new block is allocated and always inserted in the
 chain of blocks as the last block.
@@ -119,6 +119,10 @@ mem_heap_create_block(
 	ut_ad((type == MEM_HEAP_DYNAMIC) || (type == MEM_HEAP_BUFFER)
 		|| (type == MEM_HEAP_BUFFER + MEM_HEAP_BTR_SEARCH));
 
+	if (heap && heap->magic_n != MEM_BLOCK_MAGIC_N) {
+		mem_analyze_corruption((byte*)heap);
+	}
+
 	/* In dynamic allocation, calculate the size: block header + data. */
 
 	if (init_block != NULL) {
@@ -251,6 +255,10 @@ mem_heap_block_free(
 	ulint	len;
 	ibool	init_block;	
 
+	if (block->magic_n != MEM_BLOCK_MAGIC_N) {
+		mem_analyze_corruption((byte*)block);
+	}
+
 	UT_LIST_REMOVE(list, heap->base, block);
 		
 	type = heap->type;