OK, thanks. I have been head-down getting ICFP submissions done. Now I'm going on holiday for a week. I don't want to commit stuff just before going away in case I break something. So can we leave this on ice for a week or so
happy easter! Simon | -----Original Message----- | From: Tim Chevalier [mailto:[EMAIL PROTECTED] | Sent: 06 April 2007 05:04 | To: Simon Peyton-Jones | Cc: [email protected] | Subject: Re: ticky | | On 4/5/07, Tim Chevalier <[EMAIL PROTECTED]> wrote: | > Also -- I just noticed that my segfault isn't the same as your | > segfault, apparently, because I'm not using a 64-bit machine (or | > rather, I am, but my OS thinks it's running on a 32-bit machine for | > some reason I don't want to explore). I get a segfault if I run with | > -rstderr, but everything works perfectly if I run with -rfoo.txt (or | > any other output file name I try). I'll look into that, but I'm | > surprised that you were able to eliminate the segfault just by | > changing the word sizes... | | I figured out the segfault I was getting, in any case: in | open_stats_file in RtsFlags.c, the stats file pointer gets set to NULL | if you pass in "stderr" for the filename. But the code in | PrintTickyInfo in Ticky.c doesn't check for NULL before writing to the | stats file. A comment in RtsFlags.c says that stderr as an argument to | -r means to use debugBelch to print out messages. But PrintTickyInfo | prints out a lot of messages, so I'm not sure how to do that simply. | The only thing I can think of is to check for a NULL file pointer in | PrintTickyInfo and bail out if so. At least that avoids the segfault | in this case. I don't entirely understand how this code is supposed to | behave, so I'll wait for comment before making that change. | | I can't debug the segfault you were getting, though, since I don't | have a 64-bit machine... maybe you could check in the code you have so | far and I can (if necessary) go from there? | | Cheers, | Tim | | -- | Tim Chevalier * [EMAIL PROTECTED] * Often in error, never in doubt | Confused? See http://catamorphism.org/transition.html _______________________________________________ Cvs-ghc mailing list [email protected] http://www.haskell.org/mailman/listinfo/cvs-ghc
