>
> Also (in a separate patch at the end) is the removal of a whole bunch of:
>
> #ifdef IP2DEBUG_TRACE
> ip2trace(foo);
> #endif
>
> and replacing it with (the Linus-preferred, and far cleaner):
>
> #ifdef IP2DEBUG_TRACE
> void ip2trace(foo)
> #else
> #define ip2trace(foo) do {} while (0)
> #endif
>
Why in Linux we use "do {} while (0)" instead of the
standard "(void)0" ?
(standard = as normal libc in <assert.h>)
do while(0) is used for multiple statment macro to avoid problem
in if-else, not for empty instructions.
giacomo
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This archive was generated by hypermail 2b29 : Wed Nov 07 2001 - 21:00:18 EST