Fix use of unitialised values in hash tables.

[tinc] / src / hash.c

diff --git a/src/hash.c b/src/hash.c
index cf5ba90..1d203c5 100644 (file)
--- a/src/hash.c
+++ b/src/hash.c
@@ -55,7 +55,7 @@ hash_t *hash_alloc(size_t n, size_t size) {
        hash_t *hash = xmalloc_and_zero(sizeof *hash);
        hash->n = n;
        hash->size = size;
-       hash->keys = xmalloc(hash->n * hash->size);
+       hash->keys = xmalloc_and_zero(hash->n * hash->size);
        hash->values = xmalloc_and_zero(hash->n * sizeof *hash->values);
        return hash;
 }
@@ -100,6 +100,8 @@ void hash_clear(hash_t *hash) {
 void hash_resize(hash_t *hash, size_t n) {
        hash->keys = xrealloc(hash->keys, n * hash->size);
        hash->values = xrealloc(hash->values, n * sizeof *hash->values);
-       if(n > hash->n)
+       if(n > hash->n) {
+               memset(hash->keys + hash->n * hash->size, 0, (n - hash->n) * hash->size);
                memset(hash->values + hash->n, 0, (n - hash->n) * sizeof *hash->values);
+       }
 }