ticky

[Simon Peyton-Jones]

more info...

The seg fault was because I was on a 64-bit machine.  StgEntCounter (defined in Rts.h) used some 32-bit fields.  The asm code emitted by CgTicky to statically-allocate the record put the 32-bit words end to end, followed the 64-bit words.  No padding.  (The via-c route generates entirely bogus code for such mixed-size data chunks.)  But the C compiler adds padding.

I fixed this by making the 32-bit words into native words.  Lesson: I guess packing must be done manually if it's to be portable.  Presumably info tables do this.

the other problems are still there.

Simon

| -----Original Message-----
| From: Tim Chevalier [mailto:catamorphism at gmail.com]
| Sent: 04 April 2007 19:21
| To: Simon Peyton-Jones
| Cc: cvs-ghc at haskell.org
| Subject: Re: ticky
|
| On 4/4/07, Simon Peyton-Jones <simonpj at microsoft.com> wrote:
| > Do you think ticky is working in the HEAD?
|
| Well, apparently not! (I swear, it was working when I checked it in...)
|
| > Any chance you could patch it up?
| >
|
| I'll look at it sometime over the next couple days and if I can't fix
| it, I'll at least explain on the mailing list what I think is wrong.
|
| (Note the name change, btw.)
|
| Cheers,
| Tim
|
| --
| Tim Chevalier * chevalier at alum.wellesley.edu * Often in error, never in doubt
| Confused? See http://catamorphism.org/transition.html