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github.com/moarvm/moarvm | IRC logs at colabti.org/irclogger/irclogger_logs/moarvm Set by AlexDaniel on 12 June 2018. |
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| nine | How on earth is my spesh plugin state refactor breaking the UTF-8 stream decoder?! | 10:39 | |
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| dogbert17 | is it the 'Decoder may not be used concurrently' message? | 13:17 | |
| nine | No, more obscure things like .lines on a precomp file not stopping at the line end and then running into a \0 | 13:21 | |
| There's also t/01-sanity/17-isa.t which fails this test: if $code.isa("Code") { say "ok 3" } else { say "not ok 3" } | 13:24 | ||
| My only guess is: spesh plugins just giving wrong results will create all sorts of inexplicable errors | 13:25 | ||
| Could even be that nqp's t/moar/52-pluggable-spesh.t | 13:26 | ||
| show those wrong results. But the test has been running for > 5 hours already :) | |||
| It does its loops for millions of iterations. Not sure this will ever finish will all the GC debug checks turned on | 13:27 | ||
| MasterDuke | nine: my example from yesterday had a segv into the middle of sp_guardconc in interp.c, think it's related? | ||
| nine | doesn't sound like spesh plugins | 13:29 | |
| dogbert17 | and valgrind and asan are completely silent I guess | 13:30 | |
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| nine | of course | 13:35 | |
| dogbert17 | annoying | 13:37 | |
| stupid question but are you running with the JIT disabled? | 13:40 | ||
| timotimo | probably because backtraces? | 13:42 | |
| dogbert17 | oh, it's timotimo | 13:43 | |
| MasterDuke | has anybody tried ThreadSanitizer? is it of any use? | 13:44 | |
| dogbert17 has not tried it | 13:45 | ||
| MasterDuke | or any of the others? memorysanitizer, leaksanitizer | 13:46 | |
| dogbert17 | I believe I have tried somthing called ubsan | 13:47 | |
| guess that doesn't do the things you're looking for though | |||
| nine | Ouch.... git checkout . on the wrong machine is...bad | 15:38 | |
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| Kaiepi | if i'm looping over a linked list but can't assign the pointer to the current element to the start of the linked list in the loop itself, is it better written like `for (foo; foo != NULL; foo = foo->next)` or `for (; foo != NULL; foo = foo->next)`? | 16:47 | |
| nine | That foo; there won't do anything | 16:50 | |
| Kaiepi | ik | 16:52 | |
| AlexDaniel | Kaiepi: I'd prefer to read the second one because then I wouldn't need to wonder why someone put foo there | 17:05 | |
| MasterDuke | well, i got moarvm to build with threadsanitizer, but the segv i get after doesn't seem all that helpful | 18:15 | |
| gist.github.com/MasterDuke17/672fd...c5591b8c47 if anybody is curious | 18:16 | ||
| i get that just running `perl6 -e ''` | 18:17 | ||
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| MasterDuke | think this would be useful for moarvm lemire.me/blog/2019/06/06/nearly-d...s-systems/ ? | 20:03 | |
| nine | Ah, I see it now. It's an ordering issue. In add_resolution_to_guard_set the frame's special return data is already cleared, thus srd is no longer anchored and allocating the new plugin state can trigger GC | 20:08 | |