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<marc.poulh...@kalray.eu>: host zimbra2.kalray.eu[195.135.97.26] said: 550
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--- Begin Message ---
On 8/9/21 6:44 PM, Segher Boessenkool wrote:
>
>
> This is not a documented GCC extension either, and it might even
> conflict with the existing void * extension (allowing arithmetic on it,
> by defining sizeof(void)).  In either case it is not currently defined.
>
>
I'm not sure how you get to this, but all we're doing here is standard C.

x.c:

char
foo (const void *x)
{
   const char *y = (const char *) x;
   return *y;
}

y.c:

void
foo (const void *x, char c)
{
   const char *y = (const char *) x;
   *y = c;
}

wschmidt@rain6p1:~/src$ gcc -c x.c
wschmidt@rain6p1:~/src$ gcc -c y.c
y.c: In function 'foo':
y.c:5:6: error: assignment of read-only location '*y'
    *y = c;
       ^
wschmidt@rain6p1:~/src$



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