Function fromwire

wire/fromwire.c:23–42

}

const u8 *fromwire(const u8 **cursor, size_t *max, void *copy, size_t n)
{
	const u8 *p = *cursor;

	if (*max < n) {
		/* Just make sure we don't leak uninitialized mem! */
		if (copy)
			memset(copy, 0, n);
		if (*cursor)
			SUPERVERBOSE("less than encoding length");
		return fromwire_fail(cursor, max);
	}
	/* ubsan: runtime error: applying zero offset to null pointer */
	if (*cursor)
		*cursor += n;
	*max -= n;
	if (copy && n)
		memcpy(copy, p, n);
	return memcheck(p, n);
}

int fromwire_peektypen(const u8 *cursor, size_t max)
{