Re: union member already defined?

[theos <theosjp@xxxxxxxxx>]

hi iriri -

thanks for the hello and welcome.  yes, i find what you guys have been
putting together really amazing.

regarding the union - hmm... interesting.  i've had noticed that the
code compiled when i made the tags unique, but i thought that this cant
be right.

do you know what the motivation was to scope it this way compared to c?

thanks,
theo

On 07/29/2018 09:43 AM, iriri wrote:
> Union tags must be unique within a given namespace.
> 
> type u1 =
>      `A1 int
>      `B1 flt64
> ;;
> 
> type u2 =
>      `A2 flt64
>      `B2 char
> ;;
> 
>   ---- On Sat, 28 Jul 2018 02:21:33 -0700 theos <theosjp@xxxxxxxxx> wrote ----
>   > hi,
>   >
>   > i started to learn myrddin recently and was going through the tutorial.
>   > i am getting - somewhat unexpected - an "already defined" error for the
>   > below union example. this is with the latest version on linux.
>   >
>   > is this supposed to be this way?  and if so what am i doing wrong?
>   >
>   > % mbld -R u2.myr
>   > u2.myr:2: `a already defined on u2.myr:7
>   > FAIL: 6m u2.myr
>   >
>   > % 6m u2.myr
>   > u2.myr:2: `a already defined on u2.myr:7
>   >
>   > % cat u2.myr
>   > type u1 = union
>   >          `a int
>   >          `b flt
>   > ;;
>   >
>   > type u2 = union
>   >          `a flt
>   >          `b char
>   > ;;
>   >
>   > const main = {
>   >
>   > }
>   >
>   > its error-ing out in stab.c - i've poked a bit around in putucon and
>   > gram.y, but had to confess to myself that i dont really know what i am
>   > looking for/at.
>   >
>   > Breakpoint 3, putucon (st=0x5555557d1070, uc=0x5555557dc460) at stab.c:495
>   > 495                     lfatal(old->loc, "`%s already defined on %s:%d",
>   > (gdb) bt
>   > #0  putucon (st=0x5555557d1070, uc=0x5555557dc460) at stab.c:495
>   > #1  0x0000555555578d30 in installucons (st=0x5555557d1070,
>   > t=0x5555557dc6a0) at gram.y:1252
>   > #2  0x0000555555574484 in yyparse () at gram.y:248
>   > #3  0x0000555555563e3b in main (argc=2, argv=0x7fffffffe728) at main.c:276
>   >
>   > thank you,
>   > theo.
>   >
>   >
>   >
> 
> 
>