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352018-02-11T02:29:19 <bitcoin-git> [bitcoin] MarcoFalke opened pull request #12408: wallet: Change output type globals to members (master...Mf1802-walletChangeTypeMember) https://github.com/bitcoin/bitcoin/pull/12408
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462018-02-11T03:12:51 <bitcoin-git> [bitcoin] MarcoFalke opened pull request #12409: rpc: Reject deprecated reserveChangeKey in fundrawtransaction (master...Mf1802-rpcFundRawDeprecatedOption) https://github.com/bitcoin/bitcoin/pull/12409
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492018-02-11T03:28:25 <bitcoin-git> [bitcoin] Willtech opened pull request #12410: [Docs] Updated examples in CONTRIBUTING.md (master...CONTRIBUTING.md) https://github.com/bitcoin/bitcoin/pull/12410
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922018-02-11T06:48:39 <murrayn> i've got all the $DataDir\blocks\*.dat files, is the fastest way to get back up running to use --reindex-chainstate ?
932018-02-11T06:49:06 <murrayn> Because it's taking forever, and no CPU load. WTF is it doing?
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982018-02-11T07:10:52 <gmaxwell> network has been clearing a lot of 1s/vbyte txn...
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1452018-02-11T10:33:21 <provoostenator> #12406 "chainstate\160320.ldb: Data error (cyclic redundancy check)" and such strangeness...
1462018-02-11T10:33:22 <gribble> https://github.com/bitcoin/bitcoin/issues/12406 | QT Core wallet crash when starting with "-txindex" · Issue #12406 · bitcoin/bitcoin · GitHub
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1482018-02-11T10:37:34 <wumpus> usually that's some kind of i/o corruption, detected by leveldb as it CRCs everything
1492018-02-11T10:38:18 <wumpus> you could ask the user to send the ldb to see if something can be learnt from the kind of corruption (e.g. was a block overwritten, or a bit toggled, etc)
1502018-02-11T10:39:43 <provoostenator> you mean chainstate/*.ldb? Where should they upload that?
1512018-02-11T10:39:57 <wumpus> it's why I did #11674
1522018-02-11T10:39:58 <gribble> https://github.com/bitcoin/bitcoin/issues/11674 | leveldb: Add filename to corruption errors by laanwj · Pull Request #11674 · bitcoin/bitcoin · GitHub
1532018-02-11T10:40:13 <wumpus> not all the ldbs, just the one that is corrupted
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1552018-02-11T10:40:27 <wumpus> I don't know where people upload files nowadays, honestly
1562018-02-11T10:40:58 <provoostenator> How would he know which one is corrupted? Is there a command to find out?
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1582018-02-11T10:41:52 <wumpus> it's in the error message
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1602018-02-11T10:42:06 <wumpus> 2018-02-10 10:07:17 IO error: f:\BitCoinData\chainstate\160320.ldb: Data error (cyclic redundancy check).
1612018-02-11T10:42:19 <provoostenator> Ah, ok, I'll ask. Github shold be able to handle 2MB
1622018-02-11T10:42:25 <provoostenator> (or less if it's the last one)
1632018-02-11T10:46:04 <provoostenator> Shouldn't Windows create a wallets directory if no wallet.dat is found?
1642018-02-11T10:46:39 <wumpus> no, it creates a wallets directory for a new datadir
1652018-02-11T10:46:49 <provoostenator> Ok, I'll try that.
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1672018-02-11T10:47:04 <wumpus> creating it when wallet.dat is not found is problematic because the user might have a wallets with other names around
1682018-02-11T10:47:20 <wumpus> the only time we know it's safe to use wallets/ is for a new data dir
1692018-02-11T10:47:22 <provoostenator> I'll do a couple of IBD's to see if more high energy particles from the universe hit that VM
1702018-02-11T10:47:43 <provoostenator> That makes sense
1712018-02-11T10:48:57 <provoostenator> Would be nice though if it worked on an _empty_ data dir as well as a new one, so the user can create bitcoin.conf before the first launch.
1722018-02-11T10:49:19 <wumpus> they can make wallets directory themselves if they want
1732018-02-11T10:49:26 <wumpus> and move the wallets, if any, there
1742018-02-11T10:51:15 <wumpus> the data directory is not empty if a bitcoin.conf is there, it'd have to have some specialized, twisted definition of 'empty'
1752018-02-11T10:52:00 <provoostenator> Yeah, I just realized that I was trying to turn the idea in a todo. Probably too convoluted. And there's the walletdir option now too.
1762018-02-11T10:52:16 <provoostenator> *that as I was
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2172018-02-11T15:08:07 <sipa> murrayn: it's verifying all transactions in history
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2232018-02-11T15:38:29 <bitcoin-git> [bitcoin] jameshilliard opened pull request #12412: Enable spectre mitigations when supported by compiler. (master...spectre-mitigation) https://github.com/bitcoin/bitcoin/pull/12412
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2302018-02-11T16:18:57 <Lightsword> hmm, so apparently retpolineplt linker is causes breakage test_bitcoin: key.cpp:324: void ECC_Start(): Assertion `secp256k1_context_sign == nullptr' failed.
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2332018-02-11T16:19:44 <BlueMatt> fun!
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2852018-02-11T19:12:56 <luke-jr> Lightsword: no problems with GCC's..
2862018-02-11T19:13:16 * luke-jr wonders how to deal with Bech32 for libblkmaker; add it to libbase58? rename libbase58?
2872018-02-11T19:14:13 <Lightsword> luke-jr, seems to be failing under GCCâs https://travis-ci.org/bitcoin/bitcoin/jobs/340156264
2882018-02-11T19:16:11 <luke-jr> Lightsword: Travis doesn't even have GCC w/ retpoline support..
2892018-02-11T19:16:43 <Lightsword> weird âchecking whether the linker accepts -Wl,-z,retpolineplt... yesâ
2902018-02-11T19:16:49 <Lightsword> maybe I did the test wrong?
2912018-02-11T19:17:14 <Lightsword> https://github.com/bitcoin/bitcoin/pull/12412/files#diff-67e997bcfdac55191033d57a16d1408aR580
2922018-02-11T19:17:20 <luke-jr> Why does the linker need to do anything?
2932018-02-11T19:17:26 <luke-jr> I'm talking about GCC
2942018-02-11T19:18:33 <luke-jr> retpolineplt seems to be some LLVM thing
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2962018-02-11T19:19:18 <Lightsword> hmm, not sure, I kinda just copied the autoconf stuff from openssh
2972018-02-11T19:20:29 * luke-jr ponders if a linker-side implementation could turn everything into retpolines without compiler involvement, and also doing it for assembly at the same time
2982018-02-11T19:28:04 <sipa> it looks like it can be done by the linker
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3002018-02-11T19:28:48 <sipa> but it basically introduces a stub function between every caller and callee
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3052018-02-11T19:39:54 <Lightsword> âFor dynamic executables, you must compile *all* libraries with -mretpoline and additionally link the dynamic executable and all shared libraries with LLD and pass -z retpolineplt (or use similar functionality from some other linker).â
3062018-02-11T19:40:40 <Lightsword> âFor kernels or other freestanding or fully static executables, the compiler switch -mretpoline is sufficient to fully mitigate this particular attack.â
3072018-02-11T19:41:54 <Lightsword> do we build fully statically or still do some dynamic linking that would need -retpolineplt?
3082018-02-11T19:48:20 <sipa> ping cfields
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3102018-02-11T19:50:27 <sasha_> hello, i am having an issue with bitcoin core
3112018-02-11T19:50:59 <sasha_> i started synchronizing the block but sent bitcoin to the wallet before it was done
3122018-02-11T19:51:22 <sasha_> since it has to synchronize before i can use my bitcoin, i want to move it to omniwallet
3132018-02-11T19:51:36 <sasha_> however, it wont let me dump my private key
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3212018-02-11T20:15:50 <luke-jr> Lightsword: that's LLVM; GCC doesn't use the same options at all
3222018-02-11T20:17:18 <Lightsword> so travis is using LLVMâs linker?
3232018-02-11T20:17:21 <Lightsword> but GCC compiler?
3242018-02-11T20:19:21 <Lightsword> âchecking if the linker (/usr/bin/ld) is GNU ld... yesâ
3252018-02-11T20:24:57 <ProfMac> Is there an archive of the discussion when the version 2 block was defined, and the blockheight was included?
3262018-02-11T20:25:26 <sipa> bip34
3272018-02-11T20:25:35 <ProfMac> thanks.
3282018-02-11T20:30:52 <luke-jr> Lightsword: no idea what Travis is doing.. GNU ld doesn't support retpolineplt though..
3292018-02-11T20:31:42 <luke-jr> I'm reading that without -O2, the compiler options don't do the job, so maybe my test is inconclusive
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3312018-02-11T21:23:34 <ProfMac> Do I understand correctly that the ExtraNonce in a block is located in the coinbase vin?
3322018-02-11T21:23:42 <sipa> yes
3332018-02-11T21:23:52 <ProfMac> thank you.
3342018-02-11T21:23:53 <luke-jr> well, it's not a special field⦠it *can* be anywhere
3352018-02-11T21:23:59 <sipa> right
3362018-02-11T21:24:07 <luke-jr> some pools use the generation transaction's lock time for example
3372018-02-11T21:24:13 <sipa> it's just conventionally what is used to add variance to a block
3382018-02-11T21:25:58 <ProfMac> I just had the idea that it was an extra field in the block header, but then I was looking at this code snippet.
3392018-02-11T21:26:14 <ProfMac> pblock->vtx[0].vin[0].scriptSig = (CScript() << nHeight << CBigNum(nExtraNonce)) + COINBASE_FLAGS;
3402018-02-11T21:26:28 <sipa> no
3412018-02-11T21:26:39 <sipa> anything can be used to add variance to a block
3422018-02-11T21:26:49 <sipa> including just changing the order of transactions or so
3432018-02-11T21:27:01 <sipa> extranonce is not a protocol level things
3442018-02-11T21:27:02 <ProfMac> ok. Thanks.
3452018-02-11T21:27:09 <sipa> just a conventional way to add variance
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