Re: [Tinycc-devel] Add max_align_t to stddef.h and C11

[uso ewin]

On Thu, Jan 10, 2019 at 2:47 PM Christian Jullien <address@hidden> wrote:
>
> Matthias,
>
>
> I'm happy you like my patch. I was waiting for comments before pushing this
> patch.
> As you said, no one protested (or care), so it is committed in mod.
>
> It let you add the logic for the C11.
>
> Christian
>
> -----Original Message-----
> From: Tinycc-devel [mailto:address@hidden
> On Behalf Of uso ewin
> Sent: jeudi 10 janvier 2019 11:13
> To: address@hidden
> Subject: Re: [Tinycc-devel] Add max_align_t to stddef.h and C11
>
> On Tue, Jan 8, 2019 at 6:02 PM Christian Jullien <address@hidden> wrote:
> >
> > > Maybe add a global variable
> >
> > Not global but a new member of TCCState, for example cversion
> >
> > If (s->cversion >= 201112) {
> >   /* Hello C11 */
> > }
> >
> > Diff becomes:
> >
> > address@hidden:~/new-tcc $ git diff
> > diff --git a/libtcc.c b/libtcc.c
> > index df7adab..7883734 100644
> > --- a/libtcc.c
> > +++ b/libtcc.c
> > @@ -1790,8 +1790,16 @@ reparse:
> >              s->static_link = 1;
> >              break;
> >          case TCC_OPTION_std:
> > -           /* silently ignore, a current purpose:
> > -              allow to use a tcc as a reference compiler for "make test"
> */
> > +            if (*optarg == '=') {
> > +                ++optarg;
> > +                if (strcmp(optarg, "c11") == 0) {
> > +                   tcc_undefine_symbol(s, "__STDC_VERSION__");
> > +                   tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
> > +                   s->cversion = 201112;
> > +                }
> > +            }
> > +             /* silently ignore other values, a current purpose:
> > +                allow to use a tcc as a reference compiler for "make
> test"
> > */
> >              break;
> >          case TCC_OPTION_shared:
> >              x = TCC_OUTPUT_DLL;
> > diff --git a/tcc.c b/tcc.c
> > index f780389..2d4e1ea 100644
> > --- a/tcc.c
> > +++ b/tcc.c
> > @@ -33,6 +33,8 @@ static const char help[] =
> >      "  -o outfile  set output filename\n"
> >      "  -run        run compiled source\n"
> >      "  -fflag      set or reset (with 'no-' prefix) 'flag' (see tcc
> -hh)\n"
> > +    "  -std=c99    Conform to the ISO 1999 C standard (default).\n"
> > +    "  -std=c11    Conform to the ISO 2011 C standard.\n"
> >      "  -Wwarning   set or reset (with 'no-' prefix) 'warning' (see tcc
> > -hh)\n"
> >      "  -w          disable all warnings\n"
> >      "  -v -vv      show version, show search paths or loaded files\n"
> > diff --git a/tcc.h b/tcc.h
> > index cc85291..8416cc5 100644
> > --- a/tcc.h
> > +++ b/tcc.h
> > @@ -651,6 +651,7 @@ struct TCCState {
> >      int rdynamic; /* if true, all symbols are exported */
> >      int symbolic; /* if true, resolve symbols in the current module first
> > */
> >      int filetype; /* file type for compilation (NONE,C,ASM) */
> > +    int cversion; /* supported C ISO version, either 0 (199901), 201112,
> > ... */
> >
> >      char *tcc_lib_path; /* CONFIG_TCCDIR or -B option */
> >      char *soname; /* as specified on the command line (-soname) */
> >
> >
> >
> > _______________________________________________
> > Tinycc-devel mailing list
> > address@hidden
> > https://lists.nongnu.org/mailman/listinfo/tinycc-devel
>
> I like the version with cversion in tcc state.
>
> As no one protest, I guess you can push.
> Do you want to patch existing C11 code too ?
> if not I can do it, but I need this patch to be merge.
>
> Matthias,
>
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>
>
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Hi,

I've push the patch to allow _Alignof and _Generic only when -std=c11 is use.

Matthias,