Dynamische Header-Strukturen mit flexiblen Array-Mitgliedern nach C99

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
 
typedef struct {
    uint32_t length;
    uint32_t capacity;
    uint8_t payload[];
} DynamicPacket;
 
DynamicPacket* create_packet(uint32_t cap) {
    DynamicPacket* pkt = malloc(sizeof(DynamicPacket) + cap * sizeof(uint8_t));
    if (!pkt) return NULL;
    pkt->length = 0;
    pkt->capacity = cap;
    return pkt;
}