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On 15/04/16 12:23, Richard Biener wrote:
On Fri, Apr 15, 2016 at 11:44 AM, Sebastian Huber <sebastian.huber@embedded-brains.de> wrote:>I work currently on a better FreeBSD compatibility for Newlib. For >RTEMS we use the network, USB, SD/MMC stacks from FreeBSD. It would be >nice to use <sys/types.h>, etc. from Newlib directly to compile FreeBSD >user and kernel space files. > >Various FreeBSD source and header files need a typedef __size_t via ><sys/_types.h>. Unfortunately the GCC provided <stddef.h> uses > > #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \ > || defined(__DragonFly__) \ > || defined(__FreeBSD_kernel__) > /* __size_t is a typedef on FreeBSD 5, must not trash it. */ > #elif defined (__VMS__) > /* __size_t is also a typedef on VMS. */ > #else > #define __size_tThis looks odd - maybe it was meant to be a #undef? OTOH there are a whole lot of other similar cases there which do not make sense to me...
No, in case __size_t is defined, then we don't end up in this spot. stddef.h tests for various guard defines and if none of them is defined, then it typedefs size_t and defines all the guard defines to nothing, except for __size_t on some targets.
-- Sebastian Huber, embedded brains GmbH Address : Dornierstr. 4, D-82178 Puchheim, Germany Phone : +49 89 189 47 41-16 Fax : +49 89 189 47 41-09 E-Mail : sebastian.huber@embedded-brains.de PGP : Public key available on request. Diese Nachricht ist keine geschÃftliche Mitteilung im Sinne des EHUG.
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