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Fix Honeywell-CM921 VLA use ()

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obones 2021-06-14 11:45:49 +02:00 • committed by GitHub
parent 215fd3b567
commit b07bae3dbb
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 2 deletions

4
src/devices/honeywell_cm921.c
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@ -53,9 +53,9 @@ typedef struct {
static data_t *add_hex_string(data_t *data, const char *name, const uint8_t *buf, size_t buf_sz) static data_t *add_hex_string(data_t *data, const char *name, const uint8_t *buf, size_t buf_sz)
{ {
if (buf && buf_sz > 0) { if (buf && buf_sz > 0) {
char tstr[(buf_sz * 2) + 1]; // note: VLA should not be used char tstr[256] = {0};
char *p = tstr; char *p = tstr;
for (unsigned i = 0; i < buf_sz; i++, p+=2) for (unsigned i = 0; (i < buf_sz) && (i < 127); i++, p+=2)
sprintf(p, "%02x", buf[i]); sprintf(p, "%02x", buf[i]);
*p = '\0'; *p = '\0';
data = data_append(data, name, "", DATA_STRING, tstr, NULL); data = data_append(data, name, "", DATA_STRING, tstr, NULL);