Re: [Tinycc-devel] spurious "cast expected" error when initialising a struct

[Thomas Preudhomme]

Le 2014-03-31 21:36, address@hidden a écrit :
> On Mon, Mar 31, 2014 at 01:42:36PM +0100, Jay Foad wrote:
> > In this example I get a spurious error, but only when I elide some
> > braces *and* put parentheses around the literal:
> >
> > $ cat a.c
> > struct {
> >   struct {
> >     int i;
> >   } a;
> > } x = {
> >   (3)
> > };
> > $ ./tcc a.c
> > a.c:6: error: cast expected
>
> Some compilers accept it but issues warning (with -Wall).
> The following should always be valid:
>
> struct {
>    struct {
>      int i;
>    } a;
> } x = {
>    {3}
> };

At least according to C99 not all parenthesis are necessary if there is 
no ambiguity. It's a known bug but nobody found time / interest to work 
on this yet. Maybe for tcc 0.9.27 as I remember grischka warning that 
the current code is not adapted to detect this and some important 
changes would be needed.

Best regards,

Thomas