[Libexif-devel] Re:sizeof(long) == 4?

[Jan P. <pa...@pi...>]

Joerg,

unless you equip libexif with definitions of uint16_t, uint32_t
and int32_t, this "simple" change will break compilability for many
platforms. E.g. MSVC does not know such types (is it in some latest C++
standard?).

 --- Jan

> On Thu, Mar 18, 2004 at 03:45:52PM +0100, Hans Ulrich Niedermann wrote:
> >
> > Definitely. For formats of a fixed size, one should always use
> > u?int(8|16|32)_t. If required, ship a _stdint.h and do some automake
> > and #ifdef magic.
>
> I've looked into exif-utils.h and did small changes to:
>
> typedef char            ExifByte;          /* 1 byte  */
> typedef char *          ExifAscii;
> typedef uint16_t        ExifShort;         /* 2 bytes */
> typedef uint32_t        ExifLong;          /* 4 bytes */
> typedef struct {ExifLong numerator; ExifLong denominator;} ExifRational;
> typedef char            ExifUndefined;     /* 1 byte  */
> typedef int32_t         ExifSLong;         /* 4 bytes */
> typedef struct {ExifSLong numerator; ExifSLong denominator;}
> ExifSRational;
>
>
> Now, all problems should disappear. Only some printf-Statements, which
> need format modifier for eg ExifLong, are throwing warnings. Are there
> any specifier for uint32_t which can be used with printf and friends?
>
> Joerg