| Time |
Nick |
Message |
| 00:06 |
|
AlexDaniel` joined #moarvm |
| 00:37 |
|
ilmari[m] joined #moarvm |
| 00:53 |
|
patrickz_ joined #moarvm |
| 00:59 |
|
evalable6 joined #moarvm |
| 01:43 |
AlexDaniel |
huggable: bots |
| 01:43 |
huggable |
AlexDaniel, The #perl6 irc channel normally hosts several helpful bots. I am a bot, and everyone else voiced on this channel is a bot. See the full list here: https://github.com/perl6/doc/issues/711#issuecomment-235414744 |
| 01:44 |
AlexDaniel |
MasterDuke: fwiw, maintainers should be listed for each bot here ↑ |
| 01:47 |
|
domidumont joined #moarvm |
| 01:50 |
|
domidumont1 joined #moarvm |
| 01:55 |
|
domidumont joined #moarvm |
| 01:58 |
|
bisectable6 joined #moarvm |
| 01:58 |
MasterDuke |
ah right, forgot about that |
| 02:56 |
japhb |
AlexDaniel: Should it be more aware of which IRC channel it is speaking on, rather than referring only to #perl6? |
| 02:56 |
AlexDaniel |
huggable: that's just a static factoid, so it's probably ok |
| 02:56 |
huggable |
AlexDaniel, nothing found |
| 02:56 |
AlexDaniel |
japhb: ↑ :) |
| 02:58 |
|
ilbot3 joined #moarvm |
| 02:58 |
|
Topic for #moarvm is now https://github.com/moarvm/moarvm | IRC logs at http://irclog.perlgeek.de/moarvm/today |
| 03:54 |
|
domidumont joined #moarvm |
| 03:56 |
|
domidumont1 joined #moarvm |
| 06:04 |
|
releasable6 joined #moarvm |
| 06:04 |
|
greppable6 joined #moarvm |
| 06:05 |
|
squashable6 joined #moarvm |
| 06:33 |
Geth |
¦ MoarVM: samcv++ created pull request #761: Improvements to ucd2c.pl |
| 06:33 |
Geth |
¦ MoarVM: review: https://github.com/MoarVM/MoarVM/pull/761 |
| 07:10 |
|
geospeck joined #moarvm |
| 07:35 |
|
reportable6 joined #moarvm |
| 07:58 |
|
zakharyas joined #moarvm |
| 08:13 |
|
zakharyas joined #moarvm |
| 08:18 |
|
zakharyas1 joined #moarvm |
| 08:20 |
|
brrt joined #moarvm |
| 08:45 |
brrt |
good * #moarvm |
| 08:45 |
yoleaux |
6 Dec 2017 21:00Z <jnthn> brrt: SEGV in linear scan allocator: https://gist.github.com/MasterDuke17/453236bf30ff65b88fd8b84409368975 |
| 08:45 |
brrt |
ouch, thank you |
| 08:48 |
|
geospeck joined #moarvm |
| 09:02 |
|
domidumont joined #moarvm |
| 09:25 |
brrt |
damnit, that doesn't crash for me |
| 09:25 |
brrt |
and i can't start valgrind :-( |
| 09:26 |
brrt |
i'll try and start a virtual machine then |
| 09:26 |
nwc10 |
brrt: http://paste.scsys.co.uk/566116 |
| 09:27 |
nwc10 |
and only yesterday I was going to "complain that ASAN was getting bored, but then I though "be careful what you wish for" |
| 09:27 |
nwc10 |
does anyone have a colo(u)r pastebot so that I could paste it in all its pavement-pizza glory? |
| 09:29 |
brrt |
that'd be cool, yes |
| 09:31 |
brrt |
oh, that's a pretty good stack trace though |
| 09:31 |
brrt |
that gives me virtually all the necessary information |
| 09:38 |
nwc10 |
I'm probably AFK in about an hour from now, so if you have time to cook up something to (re)test before then, it should be able to |
| 09:38 |
nwc10 |
otherwise, not sure when |
| 09:49 |
|
[Coke] joined #moarvm |
| 09:50 |
|
Util joined #moarvm |
| 09:50 |
brrt |
i'm a bit puzzled still |
| 09:56 |
|
[Coke] joined #moarvm |
| 09:56 |
|
[Coke] joined #moarvm |
| 10:28 |
nwc10 |
oops, be careful what you wish for |
| 10:29 |
nwc10 |
ASAN barfage in JIT code http://paste.scsys.co.uk/566117 |
| 10:29 |
nwc10 |
brrt: is that the same place? |
| 10:30 |
nwc10 |
afk for a bit |
| 10:51 |
|
domidumont joined #moarvm |
| 11:16 |
brrt |
yes, it is |
| 11:16 |
brrt |
same place |
| 11:16 |
brrt |
not sure why still! |
| 11:20 |
lizmat |
brrt: I suspect some initialization issue, as it either happens after ~ 200 msecs, *or* it runs to completion without any issues in about 950 msecs |
| 11:20 |
lizmat |
I have not seen any crashes after 200 msecs |
| 11:22 |
brrt |
hmm, odd |
| 11:22 |
brrt |
anyway, valgrind / ASAN makes it crash quite relaibly |
| 11:22 |
brrt |
the question is, why the use-after-free |
| 11:23 |
brrt |
because the valuerefs are allocated from a single buffer that doesn't grow, and in fact that's not the growing buffer |
| 11:24 |
brrt |
oh, hang on |
| 11:24 |
brrt |
i know why |
| 11:30 |
lizmat |
whee! |
| 11:47 |
brrt |
double-pointer trick wreaks havoc with the realloc |
| 12:27 |
brrt |
that would've been a good title for a blog though |
| 12:29 |
brrt |
meh, i'll be saddened to see it go |
| 12:42 |
Geth |
¦ MoarVM: 5484f048ee | (Bart Wiegmans)++ | src/jit/linear_scan.c |
| 12:42 |
Geth |
¦ MoarVM: [JIT] Don't take a pointer-pointer to a moving object |
| 12:42 |
Geth |
¦ MoarVM: |
| 12:42 |
Geth |
¦ MoarVM: This would cause segmentation faults because the alc->values array |
| 12:42 |
Geth |
¦ MoarVM: (which backed the spillee object) could move in a realloc, and the |
| 12:42 |
Geth |
¦ MoarVM: pointer-pointer to the ValueRef would point inside this object. We |
| 12:42 |
Geth |
¦ MoarVM: don't actually need that, we can get by with two separate pointers |
| 12:42 |
Geth |
¦ MoarVM: and a comma. |
| 12:42 |
Geth |
¦ MoarVM: |
| 12:42 |
Geth |
¦ MoarVM: Note that we'd also assign to the (potentially moved) spillee object, |
| 12:42 |
Geth |
¦ MoarVM: which is what I suspect was the real cause to the SEGV, but ASAN already |
| 12:42 |
Geth |
¦ MoarVM: found the invalid read earlier. |
| 12:43 |
Geth |
¦ MoarVM: review: https://github.com/MoarVM/MoarVM/commit/5484f048ee |
| 12:43 |
brrt |
.tell lizmat jnthn nwc10 fixed |
| 12:43 |
yoleaux |
brrt: I'll pass your message to lizmat. |
| 12:49 |
nwc10 |
brrt: http://paste.scsys.co.uk/566118 -- src/jit/linear_scan.c:720:48: runtime error: member access within null pointer of type 'struct ValueRef |
| 13:07 |
brrt |
fuuuuuuuuu |
| 13:07 |
brrt |
:-( |
| 13:07 |
brrt |
oh, i see |
| 13:07 |
brrt |
yeah |
| 13:07 |
brrt |
hmmm |
| 13:09 |
|
geospeck joined #moarvm |
| 13:16 |
|
domidumont joined #moarvm |
| 13:45 |
Geth |
¦ MoarVM: 924a75d556 | (Bart Wiegmans)++ | src/jit/linear_scan.c |
| 13:45 |
Geth |
¦ MoarVM: [JIT] moreover, don't read a NULL struct |
| 13:45 |
Geth |
¦ MoarVM: |
| 13:45 |
Geth |
¦ MoarVM: If the next pointer is already NULL it makes no sense to read it. |
| 13:45 |
Geth |
¦ MoarVM: review: https://github.com/MoarVM/MoarVM/commit/924a75d556 |
| 13:45 |
brrt |
.ask lizmat if the —asan option is working for you, because, i think i have a way to fix it on OSX |
| 13:45 |
yoleaux |
brrt: I'll pass your message to lizmat. |
| 13:46 |
lizmat |
--asan is not working for me :-) |
| 13:46 |
yoleaux |
13:45Z <brrt> lizmat: if the —asan option is working for you, because, i think i have a way to fix it on OSX |
| 13:47 |
brrt |
okay, then i may have a fix for that as well |
| 13:49 |
Geth |
¦ MoarVM: f2c35e1333 | (Bart Wiegmans)++ | Configure.pl |
| 13:49 |
Geth |
¦ MoarVM: [ASAN] fix flags for darwin |
| 13:49 |
Geth |
¦ MoarVM: |
| 13:49 |
Geth |
¦ MoarVM: Apple is ... exceptional, about how to setup flags for ASAN support |
| 13:49 |
Geth |
¦ MoarVM: review: https://github.com/MoarVM/MoarVM/commit/f2c35e1333 |
| 14:07 |
brrt |
by the way |
| 14:07 |
brrt |
i've been thinking of a way to write a generic 'top-down tree matching funciton |
| 14:33 |
|
zakharyas joined #moarvm |
| 14:52 |
|
squashable6 joined #moarvm |
| 14:54 |
|
reportable6 joined #moarvm |
| 14:54 |
|
releasable6 joined #moarvm |
| 14:54 |
|
arnsholt joined #moarvm |
| 14:54 |
|
buggable joined #moarvm |
| 14:54 |
|
huggable joined #moarvm |
| 14:54 |
|
ilmari joined #moarvm |
| 14:54 |
|
ZofBot joined #moarvm |
| 14:54 |
|
nine joined #moarvm |
| 14:54 |
|
mst joined #moarvm |
| 14:55 |
|
bartolin joined #moarvm |
| 14:55 |
|
japhb joined #moarvm |
| 14:55 |
|
nebuchadnezzar joined #moarvm |
| 14:55 |
|
geospeck joined #moarvm |
| 14:55 |
|
zakharyas joined #moarvm |
| 14:55 |
|
[Coke] joined #moarvm |
| 14:55 |
|
Util joined #moarvm |
| 14:55 |
|
brrt joined #moarvm |
| 14:55 |
|
patrickz_ joined #moarvm |
| 14:55 |
|
BooK joined #moarvm |
| 14:55 |
|
zostay joined #moarvm |
| 14:55 |
|
TimToady joined #moarvm |
| 14:55 |
|
harrow` joined #moarvm |
| 14:55 |
|
jpf joined #moarvm |
| 14:55 |
|
lizmat joined #moarvm |
| 14:55 |
|
samcv joined #moarvm |
| 14:55 |
|
Voldenet joined #moarvm |
| 14:55 |
|
jnthn joined #moarvm |
| 14:55 |
|
dogbert17 joined #moarvm |
| 14:55 |
|
timotimo joined #moarvm |
| 14:55 |
|
krunen joined #moarvm |
| 14:55 |
|
eater joined #moarvm |
| 14:55 |
|
leedo joined #moarvm |
| 14:55 |
|
btyler joined #moarvm |
| 14:55 |
|
camelia joined #moarvm |
| 14:55 |
|
jsimonet joined #moarvm |
| 14:55 |
|
ingy joined #moarvm |
| 15:05 |
|
sivoais joined #moarvm |
| 15:07 |
|
geospeck joined #moarvm |
| 15:09 |
|
geospeck joined #moarvm |
| 15:16 |
|
MasterDuke joined #moarvm |
| 15:16 |
|
ChanServ joined #moarvm |
| 15:17 |
brrt |
anyway, what i wanted to say was |
| 15:17 |
brrt |
the idea was to combine an array with a string that tells me how to interpret the string |
| 15:17 |
brrt |
almost like data and instructions |
| 15:17 |
brrt |
this is a pattern, hmmm |
| 15:20 |
|
sivoais joined #moarvm |
| 15:36 |
|
AlexDaniel` joined #moarvm |
| 16:03 |
|
geospeck joined #moarvm |
| 16:32 |
|
zakharyas joined #moarvm |
| 17:24 |
|
zakharyas joined #moarvm |
| 17:55 |
|
AlexDaniel` joined #moarvm |
| 18:03 |
|
domidumont joined #moarvm |
| 18:06 |
|
domidumont1 joined #moarvm |
| 18:38 |
|
AlexDaniel` joined #moarvm |
| 18:43 |
|
domidumont joined #moarvm |
| 18:48 |
|
domidumont joined #moarvm |
| 19:01 |
|
AlexDaniel joined #moarvm |
| 19:12 |
|
domidumont joined #moarvm |
| 19:14 |
|
domidumont1 joined #moarvm |
| 19:16 |
|
ilmari[m] joined #moarvm |
| 19:19 |
|
travis-ci joined #moarvm |
| 19:19 |
travis-ci |
MoarVM build errored. Bart Wiegmans '[ASAN] fix flags for darwin |
| 19:19 |
travis-ci |
https://travis-ci.org/MoarVM/MoarVM/builds/312964683 https://github.com/MoarVM/MoarVM/compare/924a75d55600...f2c35e1333e3 |
| 19:19 |
|
travis-ci left #moarvm |
| 19:36 |
|
unicodable6 joined #moarvm |
| 19:36 |
|
committable6 joined #moarvm |
| 20:22 |
|
domidumont joined #moarvm |
| 20:33 |
|
benchable6 joined #moarvm |
| 21:48 |
|
mst joined #moarvm |
| 22:06 |
timotimo |
src/strings/unicode.c:72236:83: warning: pointer/integer type mismatch in conditional expression |
| 22:06 |
timotimo |
? Bidi_Mirroring_Glyph_enums[0] : Bidi_Mirroring_Glyph_enums[result_val]) : bogus; |
| 22:06 |
timotimo |
should we be worried about this at all? i suppose it's not a problem if it's "bogus"? |
| 22:10 |
|
bisectable6 joined #moarvm |
| 22:15 |
|
greppable6 joined #moarvm |
| 22:15 |
|
squashable6 joined #moarvm |
| 22:42 |
|
mst joined #moarvm |
| 23:00 |
|
evalable6 joined #moarvm |
