Re: [Tinycc-devel] tccgen.c: off by one in flexible array members

[Michael Matz]

Hi,

On Fri, 11 Mar 2016, Michael Matz wrote:

> This whole thing also points out some deficiencies of tcc to emit error 
> messages.  For instance it accepts the initialization
>
> void f(void) {
>  struct w q = {"bugs", { 'c' } };
> }
>
> (and sets ref->c to 1), even though this is a non-static initialization, 
> which is wrong (but the size adjustments needs also to be done for static 
> initialization).

And even that is only a GCC extension.  One isn't allowed to initialize 
flex array members, only via malloc and assignments.  (But the GCC 
extension is probably quite prevalent as GCC doesn't even warn about it in 
conformant mode.


Ciao,
Michael.