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SubjectRe: compiler warnings and syscall macros
Date
Followup to:  <3F6F6B1B.9040609@nortelnetworks.com>
By author: Chris Friesen <cfriesen@nortelnetworks.com>
In newsgroup: linux.dev.kernel
>
>
> I'm trying to figure something out. For ppc, in asm/unistd.h,
> __syscall_nr is defined as:
>
>
> #define __syscall_nr(nr, type, name, args...) \
> unsigned long __sc_ret, __sc_err; \
> { \
> <snipped for brevity>
> } \
> if (__sc_err & 0x10000000) \
> { \
> errno = __sc_ret; \
> __sc_ret = -1; \
> } \
> return (type) __sc_ret
>
>
> Whenever I use this in my code, I get compiler warnings about the
> statment "__sc_ret = -1" since it is assigning a negative value to an
> unsigned int.

Just do:

__sc_ret = -1UL;

-hpa

--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
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"Unix gives you enough rope to shoot yourself in the foot."
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