https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123569
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
From
https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-counted_005fby-variable-attribute
:
>p->array and p->count can only be changed by changing the whole structure at
>the same time.
So you need to do:
```
int nl = buf->len-1;
char *np = buf->ptr + 1;
*buf = (struct buffer) {np,nl};
```
To get this to be well defined code.
