On Thu, Apr 18, 2024 at 3:58 PM Graham Leggett <minf...@sharp.fm> wrote:
>
> On 18 Apr 2024, at 13:15, Yann Ylavic <ylavic....@gmail.com> wrote:
>
>> But let me plead again for a much simpler ->size of type apr_size_t,
>> checked against APR_BUFFER_MAX=APR_SIZE_MAX/2 wherever an apr_buffer_t
>> is initialized, using the high bit of ->size for string vs plain
>> buffer, and then getting rid of off_t/ssize_t plus all the fancy
>> signed arithmetics in the apr_buffer code (we don't care about the
>> sizeof(off_t) or anything like that anymore)..
>
> I looked at it, and it was more confusing.
There is also another completely obvious alternative which is:
typedef struct
{
union {
char *str;
void *mem;
} d;
apr_size_t size;
unsigned int flags;
} apr_buffer_t;
which also makes ->size directly usable without a helper, but you want
the type to be to words only?
If so maybe:
typedef struct
{
union {
char *str;
void *mem;
} d;
#if APR_SIZEOF_VOIDP == 8
# define APR_BUFFER_SIZE_WIDTH 63
#else
# define APR_BUFFER_SIZE_WIDTH 31
#endif
apr_size_t size:APR_BUFFER_SIZE_WIDTH,
zero_terminated:1;
} apr_buffer_t;
One could still use buf->size directly.
Regards;
Yann.
