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[v4,01/35] maple_tree: Fix static analyser cppcheck issue

Message ID 20230518145544.1722059-2-Liam.Howlett@oracle.com (mailing list archive)
State New
Headers show
Series Maple tree mas_{next,prev}_range() and cleanup | expand

Commit Message

Liam R. Howlett May 18, 2023, 2:55 p.m. UTC 
Static analyser of the maple tree code noticed that the split variable
is being used to dereference into an array prior to checking the
variable itself.  Fix this issue by changing the order of the statement
to check the variable first.

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Peng Zhang<zhangpeng.00@bytedance.com>
---
 lib/maple_tree.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 110a36479dce..9cf4fca42310 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -1943,8 +1943,9 @@  static inline int mab_calc_split(struct ma_state *mas,
 		 * causes one node to be deficient.
 		 * NOTE: mt_min_slots is 1 based, b_end and split are zero.
 		 */
-		while (((bn->pivot[split] - min) < slot_count - 1) &&
-		       (split < slot_count - 1) && (b_end - split > slot_min))
+		while ((split < slot_count - 1) &&
+		       ((bn->pivot[split] - min) < slot_count - 1) &&
+		       (b_end - split > slot_min))
 			split++;
 	}