Fix some more warnings

storage/innobase/btr/btr0sea.cc

@@ -80,11 +80,11 @@ btr_search_sys_t*	btr_search_sys;
 /** If the number of records on the page divided by this parameter
 would have been successfully accessed using a hash index, the index
 is then built on the page, assuming the global limit has been reached */
-#define BTR_SEARCH_PAGE_BUILD_LIMIT	16
+#define BTR_SEARCH_PAGE_BUILD_LIMIT	16U
 
 /** The global limit for consecutive potentially successful hash searches,
 before hash index building is started */
-#define BTR_SEARCH_BUILD_LIMIT		100
+#define BTR_SEARCH_BUILD_LIMIT		100U
 
 /** Compute a hash value of a record in a page.
 @param[in]	rec		index record
@@ -637,7 +637,7 @@ btr_search_update_block_hash_info(
 
 		if ((!block->index)
 		    || (block->n_hash_helps
-			> 2 * page_get_n_recs(block->frame))
+			> 2U * page_get_n_recs(block->frame))
 		    || (block->n_fields != block->curr_n_fields)
 		    || (block->n_bytes != block->curr_n_bytes)
 		    || (block->left_side != block->curr_left_side)) {

storage/innobase/row/row0log.cc

@@ -2538,7 +2538,7 @@ row_log_table_apply_op(
 		rec_init_offsets_temp(mrec, dup->index, offsets,
 				      dup->index->is_instant()
 				      ? static_cast<rec_comp_status_t>(
-					      mrec[-extra_size])
+					      *(mrec - extra_size))
 				      : REC_STATUS_ORDINARY);
 
 		next_mrec = mrec + rec_offs_data_size(offsets);
@@ -2658,7 +2658,7 @@ row_log_table_apply_op(
 			rec_init_offsets_temp(mrec, dup->index, offsets,
 					      dup->index->is_instant()
 					      ? static_cast<rec_comp_status_t>(
-						      mrec[-extra_size])
+						      *(mrec - extra_size))
 					      : REC_STATUS_ORDINARY);
 
 			next_mrec = mrec + rec_offs_data_size(offsets);
@@ -2767,7 +2767,7 @@ row_log_table_apply_op(
 			rec_init_offsets_temp(mrec, dup->index, offsets,
 					      dup->index->is_instant()
 					      ? static_cast<rec_comp_status_t>(
-						      mrec[-extra_size])
+						      *(mrec - extra_size))
 					      : REC_STATUS_ORDINARY);
 
 			next_mrec = mrec + rec_offs_data_size(offsets);