typedef struct AVBPrint_temp {
    char *str;         /** string so far */
    unsigned len;      /** length so far */
    unsigned size;     /** allocated memory */
    unsigned size_max; /** maximum allocated memory */
    char reserved_internal_buffer[1];
};

typedef struct AVBPrint {
    char *str;         /** string so far */
    unsigned len;      /** length so far */
    unsigned size;     /** allocated memory */
    unsigned size_max; /** maximum allocated memory */
    char reserved_internal_buffer[1];
    char reserved_padding[1024 - sizeof(AVBPrint_temp)];
} AVBPrint;