Re: [avr-gcc-list] bug !

[Kang Tin LAI]

"Very sorry" (The US Government said that to The China Government :) to
disturb the list, it was a logic failure of my brain. I forgot that
pointer is also passed by value in this case, not reference. I want to
copy something pointed by m2 to a location pointed by m1, so m1 should
be a pointer to pointer, it is OK now.

I surprise for all people here their responses, the list is quite silent
these days.

Kang Tin LAI wrote:
> 
> void fxn(void *m1, void *m2)
> {
>         m1 = m2;
> }
> 
> -O1 -O2 -O3 or -Os except -O0
> 
> The only generated code is: ret
> 
> Any idea?
> 
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