Messages in this thread | ![/](/images/icornerl.gif) | | From | "H. Peter Anvin" <> | Subject | Re: compiler warnings and syscall macros | Date | Mon, 22 Sep 2003 15:49:33 -0700 |
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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
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