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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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| Geth_ | MoarVM: ddlws++ created pull request #1271: Fix utf8-c8 memory usage |
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| discoD | that's my pr if you've got questions/comments/hate. | 02:31 | |
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| nwc10 | good *, #moarvm | 11:20 | |
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| nine | Darn....I'm pretty sure that sc_idx is not correct: $4 = {sc_forward_u = {forwarder = 0xe3bc340, sc = {sc_idx = 238797632, idx = 0}, st = 0xe3bc340}, owner = 1, flags = 16, size = 48} | 14:47 | |
| 100 % reproducible, always in a call stack involving MVM_profile_heap_take_snapshot | 14:48 | ||
| jnthn | Is 0xe3bc340 valid? | 14:50 | |
| (as a memeory address) | |||
| nine | (gdb) p *c | 14:51 | |
| $7 = {sc_forward_u = {forwarder = 0xb1e2e80, sc = {sc_idx = 186527360, idx = 0}, st = 0xb1e2e80}, owner = 1, flags = 16, size = 48} | |||
| (gdb) p *c->sc_forward_u->forwarder | |||
| $8 = {sc_forward_u = {forwarder = 0xb1e2eb0, sc = {sc_idx = 186527408, idx = 0}, st = 0xb1e2eb0}, owner = 1, flags = 16, size = 48} | |||
| 0xb1e2e80 doesn't look like an STable either | 14:52 | ||
| MasterDuke | our ui64toa and i64toa are taken from github.com/miloyip/itoa-benchmark, but assuming our names match, there are faster versions | 14:57 | |
| nwc10 | nine: ASAN and/or valgrind don't say much/ | 14:59 | |
| ? | |||
| nine | nwc10: well valgrind does report the invalid read, but at that point it's already too late | 15:06 | |
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| dogbert17 | hmm, something is wrong with the heap profiler - MoarVM panic: Adding item to worklist already freed in gen2 | 21:55 | |
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| dogbert17 | it looks like this: gist.github.com/dogbert17/76bde0a8...3f441d9f62 | 23:00 | |
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