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Use safer sizeof variant in malloc

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For a local variable:
        TYPE *p;
Allocations like this are "risky":
        p = OPENSSL_malloc(sizeof(TYPE));
if the type of p changes, and the malloc call isn't updated, you
could get memory corruption.  Instead do this:
        p = OPENSSL_malloc(sizeof(*p));
Also fixed a few memset() calls that I noticed while doing this.

Reviewed-by: Richard Levitte <levitte@openssl.org>
This commit is contained in:
Rich Salz 2015-05-01 23:10:31 -04:00 • committed by Rich Salz
parent 8920a7cd04
commit b4faea50c3
142 changed files with 278 additions and 283 deletions
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4
crypto/stack/stack.c
View file

@ -122,7 +122,7 @@ _STACK *sk_deep_copy(_STACK *sk, void *(*copy_func) (void *),
ret->sorted = sk->sorted;
ret->num = sk->num;
ret->num_alloc = sk->num > MIN_NODES ? sk->num : MIN_NODES;
ret->data = OPENSSL_malloc(sizeof(char *) * ret->num_alloc);
ret->data = OPENSSL_malloc(sizeof(*ret->data) * ret->num_alloc);
if (ret->data == NULL) {
OPENSSL_free(ret);
return NULL;
@ -156,7 +156,7 @@ _STACK *sk_new(int (*c) (const void *, const void *))
if ((ret = OPENSSL_malloc(sizeof(_STACK))) == NULL)
goto err;
if ((ret->data = OPENSSL_malloc(sizeof(char *) * MIN_NODES)) == NULL)
if ((ret->data = OPENSSL_malloc(sizeof(*ret->data) * MIN_NODES)) == NULL)
goto err;
for (i = 0; i < MIN_NODES; i++)
ret->data[i] = NULL;