Parrot 2.8.0 released | parrot.org Log: irclog.perlgeek.de/parrot/today | Nopaste: nopaste.snit.ch:8001 | smoke GC-related branches and attack GC tickets
Set by moderator on 1 October 2010.
00:02 Andy left
cotto ~~ 00:17
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GeJ sounds awfully quiet today. 03:25
aloha: clock?
aloha GeJ: GeJ: LAX: Wed, 20:24 PDT / CHI: Wed, 22:24 CDT / NYC: Wed, 23:24 EDT / UTC: Thu, 03:24 UTC / LON: Thu, 04:24 BST / BER: Thu, 05:24 CEST / TOK: Thu, 12:24 JST / SYD: Thu, 14:24 EST
GeJ: I give up.
plobsing I wish aloha would actually give up. purl was better.
cotto bacek, ping 03:26
bacek, unping 03:47
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plobsing cotto: is there any documentation on how khairul's instrument code worked? 04:16
I don't understand why it holds on to the information it does. Hauling around and keeping synchronized a separate copy of op_mapping seems wrong. 04:17
dukeleto plobsing: he wrote something about it in his proposal
cotto sure. Let me dig it up. 04:19
parrot.mangkok.com/?page_id=140
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plobsing cotto: thanks 04:23
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bacek_at_work ok 04:32
I moved aloha to physical box.
Bloody VMs aren't reliable at all.
aloha, clock?
aloha bacek_at_work: bacek_at_work: LAX: Wed, 21:32 PDT / CHI: Wed, 23:32 CDT / NYC: Thu, 00:32 EDT / UTC: Thu, 04:32 UTC / LON: Thu, 05:32 BST / BER: Thu, 06:32 CEST / TOK: Thu, 13:32 JST / SYD: Thu, 15:32 EST
bacek_at_work: I give up.
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cotto bacek_at_work, do you have a minute? I have a (likely) profiling runcore bug that's manifesting itself as a gc assert failure and debugging it is turning out to be tricky. 04:59
a reliable way to trigger it is to run /parrot -Rprofiling parrot-nqp.pbc --target=pir --output=compilers/opsc/gen/Ops/Trans/C.pir compilers/opsc/src/Ops/Trans/C.pm 05:00
bacek_at_work cotto, in trunk? 05:22
cotto yes 05:23
bacek_at_work I'll try to check it tonight. After loosing "_at_work" suffix. 05:25
cotto If your robot programming superpowers find see the bug that's great, but I'd also appreciate tips for debugging it. 05:26
sure. thanks
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bacek_at_work cotto, 32bit or 64bits? 05:53
cotto, AddrRegistery got corrupted. There is some crap inside hash 05:55
cotto bacek_at_work, 23-bit 06:02
er, 32
bacek_at_work yeah. I just reproduced it. 06:03
AddrRegistery. Hash inside it.
heh 06:06
no
cotto no?
bacek_at_work src/runcore/profiling.c:328 06:07
Parrot_pmc_gc_register(interp, (PMC *) runcore->profile_filename);
runcore->profile_filename is STRING*
kaboom
cotto When I looked at the code, it appeared that the gc didn't care. I guess ms2 does.
plobsing is there an interface to register strings? should there be? 06:08
bacek_at_work plobsing, I think we do need one. 06:09
cotto I'd hope so. If I don't do anything, the string gets collected.
bacek_at_work cotto, in this case just create String PMC
plobsing cotto: your immediate work around could be to box the string.
cotto How do they get marked in a non-explodey fashion of no interface exists?
06:10 theory left
cotto I'll try that. 06:10
bacek_at_work in theory...
cotto How much work would it be to add an interface for strings? 06:13
bacek_at_work easiest way - switch current interface to PObj. 06:14
hmm. may be no
But basically it's just add few methods to AddrRegistery
cotto That seems to fix it, though I wouldn't call the code pretty. bacek++ 06:22
cstring->STRING->pmc all over the place, and no Parrot_pmc_new_init_str in sight. 06:23
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cotto bacek_at_work, the fix would be to add get_string_keyed and set_string_keyed to AddrRegistry and add code to the gc for a public-facing interface, or would it be more involved than that? 06:25
plobsing you'd need to implement a custom mark. gc doesn't like being told about PMCs that are really STRINGs. 06:27
cotto I just learned that.
plobsing possibly other custom hashy stuff. maybe just a distinct PObj hash key type 06:28
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cotto We have strings now. Why aren't they getting collected? 06:28
plobsing cotto: we have few embedders.
cotto sigh
bacek_at_work cotto, it's unlikely that more stuff will be involved.
plobsing few if any people are putting STRINGs in heap-allocated aggregates 06:29
cotto I'll do that then. That seems like a strange oversight. 06:31
Will AddrRegistry need a separate hash for STRING pointers to live in? 06:36
bacek_at_work cotto, yes 06:37
cotto will everything in the hash get marked automagically or does the gc need to know about it explicitly? 06:39
Clearly I have holes in my understanding of the interaction between this pmc and the gc. I'll have to dig around a bit. 06:41
plobsing src/gc/mark_sweep.c:217
gc relies on gc_registry object to mark itself 06:42
cotto The convenient inheritance of AddrRegistry from Hash kinda breaks down when I want to add another hash.
looks like hashes know how to mark strings. 06:45
I see. STRING marking works fine. STRING registring isn't implemented. 06:46
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cotto anyone care for a patch review? 08:20
simon_ curious: are most lexical analysers for parrot languages written in Perl 6? 08:21
nopaste "cotto" at 192.168.1.3 pasted "add Parrot_str_gc_register et al" (311 lines) at nopaste.snit.ch/24074
cotto simon_, nqp-rx rather than full perl 6, but that's the recommended tool 08:22
winxed rolls its own though
fwiw, that solves problem with the profiling runcore and successfully keeps the string from being collected 08:24
simon_ haha, NQP is an excellent name. thanks. :)
cotto If you want to learn the language, the tests are a good way to get started. 08:28
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bacek cotto, why did you keep AddrRegistery is-a Hash? From my point of view it's better to switch it to has-a Hash. 08:33
cotto no specific reason other than it seemed like slightly less work at the time 08:34
I mostly wanted to see if it'd fix my problem.
bacek fair enough. 08:35
cotto has-a makes more sense
bacek I think you can just drop "extend Hash" and add "ATTR pmc_hash" 08:36
cotto yes 08:37
turns out it's less effort than I thought it'd be 08:38
nopaste "cotto" at 192.168.1.3 pasted "add Parrot_str_gc_register et al, v2" (346 lines) at nopaste.snit.ch/24075
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plobsing cotto: does this mean we've shaved enough yaks to make nqp-rx faster yet? 08:41
cotto there's a bit more hair left, but this will allow the nqp-rx build to be profiled 08:42
I'll call it done when Parrot and nqp-rx's builds work with profiling as the default runcore. 08:43
Crud. A gc test expects AddrRegistry to implement get_iter. 08:45
I wonder if that's needed. t/op/gc.t is the only file with failing tests.
svn-- 09:01
Skipping binary file: 't/op/gc.t'
svn-- 09:02
the inanity infects trac too
bacek karma svn 09:03
aloha svn has karma of -7.
bacek aloha, clock?
aloha bacek: bacek: LAX: Thu, 02:03 PDT / CHI: Thu, 04:03 CDT / NYC: Thu, 05:03 EDT / UTC: Thu, 09:03 UTC / LON: Thu, 10:03 BST / BER: Thu, 11:03 CEST / TOK: Thu, 18:03 JST / SYD: Thu, 20:03 EST
bacek: Dunno.
cotto with purl, we had it down to a much more appropriate level 09:04
bacek -70 :) 09:05
cotto the AddrRegistry stringification test smells unnecessary 09:07
Let's see how Rakudo fares. 09:08
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simon_ does Parrot not have a common standard library? 09:34
plobsing simon_: parrot comes with some libraries. they are standard as far as parrot is standard ;-) 09:38
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simon_ sure :) I was putting emphasis on common rather than standard, hehe. 09:44
plobsing it kinda gets spread out in the installed tree, but is nice and collected under runtime/ in the build tree
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janus \\/win 3 11:30
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dukeleto davidfetter: how goes it? 17:08
davidfetter dukeleto, i'm getting a mite frantic. i need to deliver something that will be public-facing the monday after next 17:09
oh, and this coming tuesday, i need a new story about pl/parrot :P
dukeleto, how's by you? 17:10
dukeleto davidfetter: new story for what?
davidfetter sfpug
dukeleto davidfetter: i am going to write a blog post about using Perl 6 grammars from PL/Parrot
davidfetter i'm supposed to be presenting then
dukeleto davidfetter: i keep writing it in my head but it hasn't escaped yet
davidfetter let it out! 17:11
dukeleto RELEASE THE PARROTS! 17:12
davidfetter release roderick! 17:17
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cotto ~~ 18:49
dukeleto cotto: 'ello 18:51
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cotto dukeleto, h' 19:00
dukeleto cotto: what's cookin' ? 19:01
cotto bacek++ helped me find my bug. The profiling runcore is about to get much more useful. 19:06
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cotto is partcl expected to build with trunk? 19:10
cotto suspects not
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ash_ in the gdb 19:14
is there an easy way to print the type of a PMC?
or some way to tell what the PMC is 19:15
PerlJam ash_: there's a typeof operator of some sort. I forget what it's called precisely. 19:17
ash_ lol, or even more crazy, say i have an arbitrary pointer, but i am pretty sure its a P register of some sort, anyone know how i can tell if it contains the right value in C?
PerlJam (maybe "typeof" or "type" or something)
cotto pmc->vtable->whoami->strstart
ash_ i am in the gdb, so its a bit low
a, thanks
ah*
cotto iirc
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ash_ yay, it didn't print gibberish: $27 = 0x10015253e "PackfileConstantTable" 19:18
well, i found 2 bugs in my code that are related to why the packfileconstanttable tests are failing
but its still giving me segfaults :-(
(gdb) bt 19:19
#0 0x0000000101506170 in ?? ()
#1 0x00000001012aef5c in ffi_call_unix64 ()
#2 0x000000010150d070 in ?? ()
doesn't help
dukeleto ash_: you need a build with debug symbols 19:22
ash_: looks like you might need libffi with debug symbols to get a useful backtrace
ash_ i have debug symbols 19:23
dukeleto Pacific Northwest Parrot Developers Gathering/Hackathon : calagator.org/events/1250459325
ash_ but libffi drops into asm and does magic jumping
dukeleto ash_: ah, the fun of debugging asm
ash_: what are the nature of the bugs that you found? 19:24
ash_ once you go into a libffi call it's going to mess up the stack trace until you finish the call
dukeleto ash_: why do the packfile tests trigger the bug? 19:25
ash_ one was an offset wasn't correct for a specific NCI signature, the other was me being dumb and not having a break at the end of a switch statement, and it corrected part of the problem, but now the ffi call happens and i get a segfault
i haven't fully identified why it was only packfile, but i do know it was generating the NCI signatures wrong for 2 methods, one in PackfileConstantTable and 1 in PackfileAnnotations, but it even built and ran rakudo fine with this bug... 19:26
dukeleto ash_: it is very possible that rakudo doesn't trigger those code paths 19:27
ash_ ya 19:28
dalek rrot: r49468 | mikehh++ | trunk/src/runcore/profiling.c:
fix codetest failure - trailing whitespace
19:31
dukeleto ash_: are you only getting core dumps on some platforms, or all? 19:38
ash_ segfaults are happening on OS X, i haven't tried linux yet, if i can't figure it out i may try using ubuntu since it has a different version of gdb and freinds
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dukeleto ash_: will getting some smoke reports help you? 19:39
ash_ umm, not yet, if i get it fixed on OS X a smoke report would be good to make sure its working elsewhere 19:43
okay, so its mangling the 2nd parameter on calls to "get_or_create_constant" that are dispatched via: Parrot_mmd_multi_dispatch_from_c_args 19:46
dukeleto ash_: interesting. You might have tickled a bug in parrot that no one else has run into 19:49
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ash_ i am looking to see where the param gets mangled, it might be something i did 19:50
within the nci changes
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ash_ is there anything you need to do to get gcc to not optimize at all? 19:53
doing perl Configure.pl seems to have enabled some optimizations
but in the gdb i keep getting: <value temporarily unavailable, due to optimizations> 19:54
which is annoying when your trying to debug
mikehh All tests PASS (pre/post-config, make corevm/make coretest, smoke (#492) fulltest) at r49468 - Kubuntu 10.10 RC amd64 (g++-4.5) 19:56
plobsing perl Configure.pl --debug maybe?
mikehh perl Configure.pl takes its args from the perl build 19:57
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mikehh so if perl was built with -o2 -g it gets passed to parrot 19:57
plobsing by default of course. there are ways to override it. worst case, use --ccflags='' 19:58
ash_ i did: --optimize="-g -o0"
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ash_ err -O not -o 19:58
mikehh likewise :-} 19:59
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plobsing ash_: check the generated makefile. what flags are being passed to cc? 20:00
GeJ Bonjour everyone. 20:04
davidfetter bonjour GeJ 20:05
cotto hio GeJ 20:06
GeJ heya davidfetter, cotto. 20:11
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shockwave Hello boys and girls. 21:18
I'm in the process of embedding Parrot, and I'm running into a little issue.
Basically, Parrot_pbc_read() always fails for me. I can run the PBC file using ./parrot.exe, but the function above always returns false. 21:19
I'm on Windows 7.
I'm compiling my project using Visual Studio 2010. 21:20
I'm compiling Parrot with mingwin
strawberry Perl.
Does anyone have an idea of where/what I should be looking at to resolve this problem? 21:21
bacek aloha, humans 21:23
21:23 davidfetter is now known as humans
humans aloha bacek 21:24
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bacek :) 21:24
cotto aloha, bacek
bacek cotto, hio. How is your bug in profiling runcore?
cotto just need to get a test passing before I commit the fix 21:25
plobsing shockwave: does it print anything before it returns NULL? looking at the function, it should be.
shockwave @plobsing: This is for a GUI app, so it wouldn't print anything. 21:26
3D game, to be exact. 21:27
plobsing you can replace the standard handles to something meaningful
like a stringbuffer that then populates an error popup
or an error console of some kind 21:28
shockwave @plobsing: Ok, let me go lookup how to do that. brb
cotto either that or remove the test
plobsing but for debugging, the information I *need* is which error message you are getting (because there's between 5 and 10 different possible scenarios) 21:29
cotto is strongly tempted to not implement get_iter for AddrRegistry 21:30
shockwave @plobsing: If I understood you correctly, I need to change the stdoutput/stderror handles to something like a stringbuffer, right? I have no idea how to do that, so I'm looking on docs.parrot.org for any info on it.
plobsing shockwave: so you *can't* run this at the command line? it would be much easier for the moment (although I understand that isn't an interface you would want to ship) 21:31
shockwave oh, gotcha. Let me see if I can actually do that. 21:32
@plobsing: It did run from the command line, but didn't print anything. 21:33
Let me show you the code that I'm using
plobsing and it returned NULL?
shockwave mPackFile = Parrot_pbc_read(mInterp, path.c_str(), debug); 21:34
if (!mPackFile) { return false; }
yeah, it's returning null.
and debug is 0
mInterp is a handle initialized by Parrot_new(NULL);
purl paste 21:35
plobsing ENOPURL 21:36
nopaste "shockwave" at 192.168.1.3 pasted "Code for loading PBC" (33 lines) at nopaste.snit.ch/24090
shockwave That's the simple class I'm using to load the PBC
dukeleto backlogs 21:38
shockwave Like I mentioned before, libparrot is built using the strawberry tools.
plobsing but this is c++. isn't strawberry strictly gcc? 21:39
shockwave I'm not sure if that's causing some incompatibility with the MSVC built stuff.
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shockwave yes 21:39
But, *I* am not using strawberry.
plobsing shockwave: probably, this is a problem.
shockwave I'm only using it to built libparrot. 21:40
plobsing I'm not sure if msvc and gcc use the same abi by default or if they can be made to do so at all.
shockwave I don't mind at all building Parrot with Visual Studio, but I just can't find any docs on how to do it.
plobsing But I do know that parrot's header files will be tuned for the particular compiler with which parrot is being compiled.
shockwave I'm sure the docs are around, somewhere. I just cant find them. 21:41
plobsing I seem to recall breaking one of our smoke builds which was running msvc. So *somebody* knows
you probably need to use activeperl to build it.
tcurtis jnthn: ping
plobsing or some other msvc perl 21:42
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dukeleto shockwave: you might want to look at how PL/Parrot reads PBC 21:42
tcurtis jnthn: shockwave is wanting to know how to build Parrot with Visual Studio. IIRC, you built the R * MSI one month using MSVC, right? 21:43
shockwave dukeleto: PL?
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dukeleto shockwave: pl.parrot.org 21:44
shockwave: PL/Parrot just calls Parrot_load_bytecode
jnthn shockwave: Using the Visual Studio Command Pro,mpt + ActivePerl, it just works out the box for me. 21:45
(e.g. the usual Configure.pl / nmake)
shockwave jnthn: Cool, I'll give it a try.
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shockwave dukeleto: I think the issue I'm having has to do with the different ABIs of MSVC and GCC, which I'm mixing, like plobsing mentioned. 21:46
I'll use ActivePerl. brb 21:47
bacek aloha, nopaste is is nopaste.snit.ch (works with the script in $_PARROT/tools/dev/nopaste.pl) 21:57
aloha bacek: Okay.
bacek aloha, paste is see nopaste
aloha bacek: Okay.
bacek aloha, paste?
aloha bacek: paste is see nopaste
bacek aloha, nopaste?
aloha bacek: nopaste is is nopaste.snit.ch (works with the script in $_PARROT/tools/dev/nopaste.pl)
jnthn shockwave: Don't cross the beams^Wcompilers!
cotto bacek, do you think the addr_registry_2_str test in t/pmc/addrregistry.t is necessary? It looks like it'd be a pain to implement with two hashes. 21:58
shockwave jnthn: Good advice.
I see you wrote: ... mpt + ActivePerl ...
What's mpt?
jnthn drunk typing 21:59
Prompt
:-)
shockwave :)
cotto that sounds a lot worse than duck typing
bacek cotto, I don't have such test in t/pmc/addrregistery... 22:00
cotto t/op/gc.t 22:01
my mistak
e
bacek cotto, it's useless test. Because it tests String PMC not STRING. 22:03
cotto I was hoping you'd say that.
bacek anyway, $dayjob time
see you
cotto have "fun"
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dalek rrot: r49469 | cotto++ | trunk/t/op/gc.t:
[t] remove a useless test that interferes with the next commit
22:10
rrot: r49470 | cotto++ | trunk/src/pmc/addrregistry.pmc:
[pmc] make AddrRegistry able to hold and mark both STRINGs and PMCs
rrot: r49471 | cotto++ | trunk (2 files):
[gc] add internal functions for string registering and unregistering
rrot: r49472 | cotto++ | trunk (2 files):
[extend] add functions for string registering and unregistering for embedded users
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dalek rrot: r49473 | cotto++ | trunk/src/runcore/profiling.c:
[profiling] use the new string registering interface to keep the filename from being prematurely collected
22:26
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shockwave :( 22:33
I built Parrot using ActiveState, but still Parrot_pbc_read() always returns false. 22:34
Also, if that function is print error messages, they won't be seen.
bacek_at_work ~~ 22:35
shockwave I added print lines to stderr, and ran the program from the command line. Since it's a gui program, the cmdline doesnt print anything.
plobsing had mentioned something about redirecting the output. I wonder if he meant by using some Parrot function, or if he meant the pipe redirection? 22:36
cotto parrot builds and installs with the profiling runcore as the default 22:44
bacek_at_work cotto++ # Hooray! 22:45
cotto now for nqp-rx 22:48
dukeleto shockwave: have you tried Parrot_load_bytecode ? 22:50
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shockwave dukeleto: I haven't, but read the description of it here: docs.parrot.org/parrot/latest/html/...d.pod.html 22:52
"Due to the void return type, the behavior of this function on error is unclear."
I think it would probably make sense for the core of Parrot not to print stuff to stdout/stderr. 22:58
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shockwave The assumption that stderr/stdio are available can be untrue, in some cases. Like, in Windows GUI programming. 22:59
I'm looking at Parrot_io_eprintf
That function is used by Parrot_pbc_read() to print errors.
Is there a function to set _PIO_STDERR(interp) to be a file? 23:01
dukeleto shockwave: the parrot embed interface hasn't been used by many people, and lots of the docs are wrong.
shockwave: read the code to be sure
shockwave: and/or please provide doc patches :) 23:03
shockwave: i think i remember running into this problem with PL/Parrot, which is why I used Parrot_load_bytecode
cotto nqp-rx's build works 23:05
shockwave dukeleto: I'll give Parrot_load_bytecode a try. 23:06
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shockwave ok, the docs are wrong. What is the Function to invoke a sub? The docs say Parrot_ext_call 23:16
dukeleto shockwave: yes 23:17
shockwave: PL/Parrot uses Parrot_ext_call 23:18
shockwave: github.com/leto/plparrot/blob/maste...rot.c#L488
shockwave: what were the docs wrong about? 23:19
shockwave dukeleto: Apparently, it's in the extend.h header
It looks like extend.h and embed.h should be merged.
dukeleto shockwave: you usually need extend.h, embed.h and sometimes extend_vtable.h 23:20
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mikehh opbots, names 23:24
nopaste "shockwave" at 192.168.1.3 pasted "Parrot_load_bytecode" (19 lines) at nopaste.snit.ch/24093 23:26
shockwave What I pasted above is even worst. It crashes somewhere there. 23:27
And, since in my project that thing is in a different DLL, I can't debug it.
It is so frustrating that something so basic doesn't work.
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dalek rrot: r49474 | mikehh++ | trunk/src/string/api.c:
fix codetest failure - trailing whitespace
23:29
rrot: r49475 | mikehh++ | trunk/t/op/gc.t:
change plan to reflect removed sub-test
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cotto mikehh++ 23:37
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hatseflats anyone know why parrot installs files in /usr/src? 23:47
dukeleto hatseflats: which OS/platform are you on? parrot doesn't do that for me 23:48
hatseflats: which version of parrot are you using? release or from svn?
hatseflats dukeleto: parrot 2.7.0 dist, on gentoo 23:49
already asked in #gentoo on freenode, no one has replied so far :)
dukeleto hatseflats: in any case, if you do perl Configure.pl --prefix=/foo, you can control where it installs 23:50
hatseflats dukeleto: portage abstracts that procedure, so I figure it's an issue I have to discuss over in their channels, thanks for the help anyway :)
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dukeleto hatseflats: indeed. are you using a gentoo distribution of parrot? do you have a link for it? 23:51
msg shockwave i am not sure many people have used the parrot embed api directly from windows, and i don't think Parrot_ns_find_current_namespace_global is returning a valid sub, which will make Parrot_ext_call blow up 23:53
aloha OK. I'll deliver the message.
hatseflats dukeleto: gentoo-portage.com/dev-lang/parrot
which gets it's sources from parrot.org
mikehh All tests PASS (pre/post-config, make corevm/make coretest, smoke (#493) fulltest) at r49475 - Kubuntu 10.10 RC amd64 (gcc-4.5)
hatseflats funny, looking at the ebuild file, it doesn't seem to install to /usr/src, but the tools indicate the directory in /usr/src is owned by parrot's package 23:54
dukeleto hatseflats: who wrote the ebuild for parrot? 23:58
hatseflats: the ebuild package doesn't seem to be in the parrot source code
hatseflats ebuilds are gentoo specific, hardly any packages provide them because they're constantly updated etc, I don't know what subproject parrot belongs, finding out will require some polling in the gentoo channels 23:59