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tools/firewire: nosy-dump: check for allocation failure 

Behavior of null pointer dereference is undefined in the C language.
Portably implement the desired behavior.

Reported-by: Yang Yeping <yangyeping_666@hotmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2012-10-22 15:17:17 +02:00
parent 9489e9dcae
commit 6fa79bcaec
1 changed files with 4 additions and 0 deletions
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4
tools/firewire/nosy-dump.c
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@ -150,6 +150,8 @@ subaction_create(uint32_t *data, size_t length)
/* we put the ack in the subaction struct for easy access. */
sa = malloc(sizeof *sa - sizeof sa->packet + length);
if (!sa)
exit(EXIT_FAILURE);
sa->ack = data[length / 4 - 1];
sa->length = length;
memcpy(&sa->packet, data, length);
@ -180,6 +182,8 @@ link_transaction_lookup(int request_node, int response_node, int tlabel)
}
t = malloc(sizeof *t);
if (!t)
exit(EXIT_FAILURE);
t->request_node = request_node;
t->response_node = response_node;
t->tlabel = tlabel;