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 35 2018-02-11T02:29:19  <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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 46 2018-02-11T03:12:51  <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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 49 2018-02-11T03:28:25  <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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 92 2018-02-11T06:48:39  <murrayn> i've got all the $DataDir\blocks\*.dat files, is the fastest way to get back up running to use --reindex-chainstate ?
 93 2018-02-11T06:49:06  <murrayn> Because it's taking forever, and no CPU load. WTF is it doing?
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 98 2018-02-11T07:10:52  <gmaxwell> network has been clearing a lot of 1s/vbyte txn...
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145 2018-02-11T10:33:21  <provoostenator> #12406 "chainstate\160320.ldb: Data error (cyclic redundancy check)" and such strangeness...
146 2018-02-11T10:33:22  <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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148 2018-02-11T10:37:34  <wumpus> usually that's some kind of i/o corruption, detected by leveldb as it CRCs everything
149 2018-02-11T10:38:18  <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)
150 2018-02-11T10:39:43  <provoostenator> you mean chainstate/*.ldb? Where should they upload that?
151 2018-02-11T10:39:57  <wumpus> it's why I did  #11674
152 2018-02-11T10:39:58  <gribble> https://github.com/bitcoin/bitcoin/issues/11674 | leveldb: Add filename to corruption errors by laanwj · Pull Request #11674 · bitcoin/bitcoin · GitHub
153 2018-02-11T10:40:13  <wumpus> not all the ldbs, just the one that is corrupted
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155 2018-02-11T10:40:27  <wumpus> I don't know where people upload files nowadays, honestly
156 2018-02-11T10:40:58  <provoostenator> How would he know which one is corrupted? Is there a command to find out?
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158 2018-02-11T10:41:52  <wumpus> it's in the error message
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160 2018-02-11T10:42:06  <wumpus> 2018-02-10 10:07:17 IO error: f:\BitCoinData\chainstate\160320.ldb: Data error (cyclic redundancy check).
161 2018-02-11T10:42:19  <provoostenator> Ah, ok, I'll ask. Github shold be able to handle 2MB
162 2018-02-11T10:42:25  <provoostenator> (or less if it's the last one)
163 2018-02-11T10:46:04  <provoostenator> Shouldn't Windows create a wallets directory if no wallet.dat is found?
164 2018-02-11T10:46:39  <wumpus> no, it creates a wallets directory for a new datadir
165 2018-02-11T10:46:49  <provoostenator> Ok, I'll try that.
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167 2018-02-11T10:47:04  <wumpus> creating it when wallet.dat is not found is problematic because the user might have a wallets with other names around
168 2018-02-11T10:47:20  <wumpus> the only time we know it's safe to use wallets/ is for a new data dir
169 2018-02-11T10:47:22  <provoostenator> I'll do a couple of IBD's to see if more high energy particles from the universe hit that VM
170 2018-02-11T10:47:43  <provoostenator> That makes sense
171 2018-02-11T10:48:57  <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.
172 2018-02-11T10:49:19  <wumpus> they can make wallets directory themselves if they want
173 2018-02-11T10:49:26  <wumpus> and move the wallets, if any, there
174 2018-02-11T10:51:15  <wumpus> the data directory is not empty if a bitcoin.conf is there, it'd have to have some specialized, twisted definition of 'empty'
175 2018-02-11T10:52:00  <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.
176 2018-02-11T10:52:16  <provoostenator> *that as I was
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217 2018-02-11T15:08:07  <sipa> murrayn: it's verifying all transactions in history
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223 2018-02-11T15:38:29  <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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230 2018-02-11T16:18:57  <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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233 2018-02-11T16:19:44  <BlueMatt> fun!
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285 2018-02-11T19:12:56  <luke-jr> Lightsword: no problems with GCC's..
286 2018-02-11T19:13:16  * luke-jr wonders how to deal with Bech32 for libblkmaker; add it to libbase58? rename libbase58?
287 2018-02-11T19:14:13  <Lightsword> luke-jr, seems to be failing under GCC’s https://travis-ci.org/bitcoin/bitcoin/jobs/340156264
288 2018-02-11T19:16:11  <luke-jr> Lightsword: Travis doesn't even have GCC w/ retpoline support..
289 2018-02-11T19:16:43  <Lightsword> weird “checking whether the linker accepts -Wl,-z,retpolineplt... yes”
290 2018-02-11T19:16:49  <Lightsword> maybe I did the test wrong?
291 2018-02-11T19:17:14  <Lightsword> https://github.com/bitcoin/bitcoin/pull/12412/files#diff-67e997bcfdac55191033d57a16d1408aR580
292 2018-02-11T19:17:20  <luke-jr> Why does the linker need to do anything?
293 2018-02-11T19:17:26  <luke-jr> I'm talking about GCC
294 2018-02-11T19:18:33  <luke-jr> retpolineplt seems to be some LLVM thing
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296 2018-02-11T19:19:18  <Lightsword> hmm, not sure, I kinda just copied the autoconf stuff from openssh
297 2018-02-11T19:20:29  * 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
298 2018-02-11T19:28:04  <sipa> it looks like it can be done by the linker
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300 2018-02-11T19:28:48  <sipa> but it basically introduces a stub function between every caller and callee
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305 2018-02-11T19:39:54  <Lightsword> “For 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).”
306 2018-02-11T19:40:40  <Lightsword> “For kernels or other freestanding or fully static executables, the compiler switch -mretpoline is sufficient to fully mitigate this particular attack.“
307 2018-02-11T19:41:54  <Lightsword> do we build fully statically or still do some dynamic linking that would need -retpolineplt?
308 2018-02-11T19:48:20  <sipa> ping cfields
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310 2018-02-11T19:50:27  <sasha_> hello, i am having an issue with bitcoin core
311 2018-02-11T19:50:59  <sasha_> i started synchronizing the block but sent bitcoin to the wallet before it was done
312 2018-02-11T19:51:22  <sasha_> since it has to synchronize before i can use my bitcoin, i want to move it to omniwallet
313 2018-02-11T19:51:36  <sasha_> however, it wont let me dump my private key
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321 2018-02-11T20:15:50  <luke-jr> Lightsword: that's LLVM; GCC doesn't use the same options at all
322 2018-02-11T20:17:18  <Lightsword> so travis is using LLVM’s linker?
323 2018-02-11T20:17:21  <Lightsword> but GCC compiler?
324 2018-02-11T20:19:21  <Lightsword> “checking if the linker (/usr/bin/ld) is GNU ld... yes”
325 2018-02-11T20:24:57  <ProfMac> Is there an archive of the discussion when the version 2 block was defined, and the blockheight was included?
326 2018-02-11T20:25:26  <sipa> bip34
327 2018-02-11T20:25:35  <ProfMac> thanks.
328 2018-02-11T20:30:52  <luke-jr> Lightsword: no idea what Travis is doing.. GNU ld doesn't support retpolineplt though..
329 2018-02-11T20:31:42  <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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331 2018-02-11T21:23:34  <ProfMac> Do I understand correctly that the ExtraNonce in a block is located in the coinbase vin?
332 2018-02-11T21:23:42  <sipa> yes
333 2018-02-11T21:23:52  <ProfMac> thank you.
334 2018-02-11T21:23:53  <luke-jr> well, it's not a special field… it *can* be anywhere
335 2018-02-11T21:23:59  <sipa> right
336 2018-02-11T21:24:07  <luke-jr> some pools use the generation transaction's lock time for example
337 2018-02-11T21:24:13  <sipa> it's just conventionally what is used to add variance to a block
338 2018-02-11T21:25:58  <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.
339 2018-02-11T21:26:14  <ProfMac> pblock->vtx[0].vin[0].scriptSig = (CScript() << nHeight << CBigNum(nExtraNonce)) + COINBASE_FLAGS;
340 2018-02-11T21:26:28  <sipa> no
341 2018-02-11T21:26:39  <sipa> anything can be used to add variance to a block
342 2018-02-11T21:26:49  <sipa> including just changing the order of transactions or so
343 2018-02-11T21:27:01  <sipa> extranonce is not a protocol level things
344 2018-02-11T21:27:02  <ProfMac> ok.  Thanks.
345 2018-02-11T21:27:09  <sipa> just a conventional way to add variance
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