[fpc-pascal]Strange indexing problem - gdb or fpc?

[Pierre Muller]

At 06:38 22/04/2002 , JOHN COPPENS a écrit:
>Hi...
>
>I'm debugging (trying to) a program, was nearing the problem, and
>found this strange behaviour:
>
>820             rconst[r+1] := x;
>(gdb) print RCONST[0]                  //  Still 0
>$5 = 0
>(gdb) print R
>$6 = 0                                 //   Was initialized like this
>(gdb) print X
>$7 = 0.29999999999999999               //  New value
>(gdb) next                             //  Execute the rconst[r+1] := x
>821             realindex := 1;
>(gdb) print RCONST[0]
>$8 = 0.29999999999999999               //  Should've been in [1]!!!
>(gdb) print R
>$9 = 0                                 //  R is 0, so r+1 = 1
>(gdb) print X
>$10 = 0.29999999999999999
>
>   realarray = array[1..rmax] of real;
>   rconst: realarray;
>
>BTW, RCONST[1] is 0 after the operation. Any ideas?
>
>Is this because C arrays are 0 based? I checked the Docs, they don't
>mention this problem...

You need to givemore info, so that we can help you out.

1) Could you please send a short complete source 
for your problem so that we can compile it also?
2) On which OS are you working?
3) Which version of GDB do you use?
4) What current language do you use?

I can maybe help (as I wrote the pascal language support for GDB)
after you give us these informations.