On Tue, Nov 12, 2013 at 02:42:26PM +0100, Jiri Benc wrote:
> +#define LIST_FOREACH_SAFE(var, tmp, head, field) \
> + for ((var) = ((head)->lh_first), \
> + (tmp) = (var) ? ((var)->field.le_next) : NULL; \
> + (var); \
> + (var) = (tmp), \
> + (tmp) = (var) ? ((var)->field.le_next) : NULL)
> +
Hm...
I get this when cross compiling for m68k:
/home/richard/git/linuxptp/clock.c:117:0: error: "LIST_FOREACH_SAFE" redefined
[-Werror]
/home/richard/x-toolchain-m68k/install/bin/../m68k-uclinux/libc/usr/include/sys/queue.h:358:0:
note: this is the location of the previous definition
cc1: all warnings being treated as errors
That queue.h has the following definition:
#define LIST_FOREACH_SAFE(var, head, field, tvar) \
for ((var) = LIST_FIRST((head)); \
(var) && ((tvar) = LIST_NEXT((var), field), 1); \
(var) = (tvar))
For Xscale ixp, the toolchain header also has this defined already in
the same way.
On my debian system I find
/usr/include/i386-linux-gnu/sys/queue.h
/usr/include/bsd/sys/queue.h
and this second version also defines LIST_FOREACH_SAFE in the same
way.
Can you place the macro in clock.c inside an #ifndef?
Also, can you explain why the definitions are different?
Thanks,
Richard
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