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- From 77d935b7ae7871a1940cd827e850e6063044ec45 Mon Sep 17 00:00:00 2001
- From: Tobias Stoeckmann <tobias@stoeckmann.org>
- Date: Mon, 4 May 2020 19:46:45 +0200
- Subject: [PATCH 2/2] Prevent division by zero in linkhash.
- If a linkhash with a size of zero is created, then modulo operations
- are prone to division by zero operations.
- Purely protective measure against bad usage.
- ---
- linkhash.c | 3 +++
- 1 file changed, 3 insertions(+)
- --- a/linkhash.c
- +++ b/linkhash.c
- @@ -10,6 +10,7 @@
- *
- */
-
- +#include <assert.h>
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- @@ -431,6 +432,8 @@ struct lh_table* lh_table_new(int size,
- int i;
- struct lh_table *t;
-
- + /* Allocate space for elements to avoid divisions by zero. */
- + assert(size > 0);
- t = (struct lh_table*)calloc(1, sizeof(struct lh_table));
- if(!t) lh_abort("lh_table_new: calloc failed\n");
- t->count = 0;
|
