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

[uso ewin]

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,