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01:49 < bitcoin-git> [bitcoin] laanwj opened pull request #10832: init: Factor out AppInitLockDataDirectory (master...2017_07_appinitlockdatadirectory) https://github.com/bitcoin/bitcoin/pull/10832
01:49 < bitcoin-git> [bitcoin] laanwj closed pull request #10818: init: Keep track of whether data directory locked, don't cleanup if not (master...2017_05_locked_datadir) https://github.com/bitcoin/bitcoin/pull/10818
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02:46 < wumpus> might be some calling convention difference
02:46 < wumpus> or at least platform ABI
02:47 < wumpus> gdb is not very robust against such things (accidental or to step reverse-engineering) gets easily confused if certain registers are not set up as they should
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03:32 < fanquake> what is with this spam
03:53 < fanquake> wumpus Any chance you've tested Boost 1.64.0 on openbsd?
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05:32 < bitcoin-git> [bitcoin] practicalswift opened pull request #10833: Fix typos (master...typos-201707) https://github.com/bitcoin/bitcoin/pull/10833
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07:18 < wumpus> fanquake: only 1.63
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08:23 < morcos> wumpus: I assume you knew if you give multiple named arguments for the same argument it's the last one that matters?
08:23 < morcos> I'm not sure how much of an issue that is, but seems like it could cause problems with wallet
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08:32 < jamesob> If I wanted to do some kind of analysis on the UTXO set, is my best bet forking and making use of CCoinsView somehow? is https://github.com/bitcoin/bitcoin/pull/7759 worth resurrecting?
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11:02 < bitcoin-git> [bitcoin] sipa pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/8fdd23a224ba...505955052e60
11:02 < bitcoin-git> bitcoin/master 0189d8e practicalswift: Fix typos
11:02 < bitcoin-git> bitcoin/master 5059550 Pieter Wuille: Merge #10833: Fix typos...
11:02 < bitcoin-git> [bitcoin] sipa closed pull request #10833: Fix typos (master...typos-201707) https://github.com/bitcoin/bitcoin/pull/10833
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11:08 < bitcoin-git> [bitcoin] practicalswift opened pull request #10834: Remove declaration of unused function: void UpdatedTransaction(const uint256 &) (master...remove-UpdatedTransaction) https://github.com/bitcoin/bitcoin/pull/10834
11:12 < bitcoin-git> [bitcoin] sipa pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/505955052e60...afd2fca911c4
11:12 < bitcoin-git> bitcoin/master 228987d Gregory Sanders: getbalance example covers at least 6 confirms
11:12 < bitcoin-git> bitcoin/master afd2fca Pieter Wuille: Merge #10807: getbalance example covers at least 6 confirms...
11:13 < bitcoin-git> [bitcoin] sipa closed pull request #10807: getbalance example covers at least 6 confirms (master...getbalexample) https://github.com/bitcoin/bitcoin/pull/10807
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12:08 < bitcoin-git> [bitcoin] paveljanik opened pull request #10835: Do not shadow a field of 'reverse_range<T>' (master...20170715_Wshadow_reverseiterator) https://github.com/bitcoin/bitcoin/pull/10835
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12:23 < bitcoin-git> [bitcoin] sipa pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/afd2fca911c4...10b22e3141a6
12:23 < bitcoin-git> bitcoin/master 0aadc11 Pieter Wuille: Avoid dereference-of-casted-pointer
12:23 < bitcoin-git> bitcoin/master 10b22e3 Pieter Wuille: Merge #10760: Avoid dereference-of-casted-pointer...
12:23 < bitcoin-git> [bitcoin] sipa closed pull request #10760: Avoid dereference-of-casted-pointer (master...20170707_avoidcastptr) https://github.com/bitcoin/bitcoin/pull/10760
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12:38 < bitcoin-git> [bitcoin] corebob opened pull request #10837: Fix resource leak (master...20170715-fix-leak-1) https://github.com/bitcoin/bitcoin/pull/10837
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13:27 < bitcoin-git> [bitcoin] sipa pushed 3 new commits to master: https://github.com/bitcoin/bitcoin/compare/10b22e3141a6...c5904e871479
13:27 < bitcoin-git> bitcoin/master fe4faba John Newbery: [refactor] move SplitHostPort() into utilstrencodings...
13:27 < bitcoin-git> bitcoin/master 5c64324 John Newbery: [utils] allow square brackets for ipv6 addresses in bitcoin-cli...
13:27 < bitcoin-git> bitcoin/master c5904e8 Pieter Wuille: Merge #10812: [utils] Allow bitcoin-cli's -rpcconnect option to be used with square brackets...
13:27 < bitcoin-git> [bitcoin] sipa closed pull request #10812: [utils] Allow bitcoin-cli's -rpcconnect option to be used with square brackets (master...bitcoin_cli_ipv6) https://github.com/bitcoin/bitcoin/pull/10812
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14:02 < bitcoin-git> [bitcoin] sipa pushed 4 new commits to master: https://github.com/bitcoin/bitcoin/compare/c5904e871479...5cfdda2503c9
14:02 < bitcoin-git> bitcoin/master 4a3fc35 Matt Corallo: Track keypool entries as internal vs external in memory...
14:02 < bitcoin-git> bitcoin/master 28301b9 Matt Corallo: Meet code style on lines changed in the previous commit
14:02 < bitcoin-git> bitcoin/master d40a72c Matt Corallo: Clarify *(--.end()) iterator semantics in CWallet::TopUpKeyPool
14:02 < bitcoin-git> [bitcoin] sipa closed pull request #10235: Track keypool entries as internal vs external in memory (master...2017-04-wallet-more-keypool-cache) https://github.com/bitcoin/bitcoin/pull/10235
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16:32 < sipa> cfields, fanquake: feel like testing #10821 again?
16:32 < gribble> https://github.com/bitcoin/bitcoin/issues/10821 | [WIP] Add SSE 4.2 optimized SHA256 by sipa · Pull Request #10821 · bitcoin/bitcoin · GitHub
16:33 < sipa> i've added a commit that makes all register choices explicit, but still lets the compiler manage the stack
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16:47 < BlueMatt> can we remove getinfo for 0.15?
16:49 < bitcoin-git> [bitcoin] TheBlueMatt opened pull request #10838: (finally) remove the longest-ever-deprecated RPC call getinfo (master...2017-07-seriously-fuck-getinfo) https://github.com/bitcoin/bitcoin/pull/10838
16:54 < BlueMatt> uhhh, sipa, are you sure https://github.com/bitcoin/bitcoin/pull/10770#issuecomment-315558931 is specific to that PR?
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17:11 < sipa> BlueMatt: i'm not
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17:13 < bitcoin-git> [bitcoin] practicalswift opened pull request #10839: Don't use pass by reference to const for cheaply-copied types (bool, char, etc.). (master...dont-pass-by-reference-for-cheaply-copied-types) https://github.com/bitcoin/bitcoin/pull/10839
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17:21 < fanquake> sipa same issue as before. Assertion failed: (consensus.hashGenesisBlock etc
17:22 < sipa> fanquake: ok, thank you
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17:27 < bitcoin-git> [bitcoin] practicalswift opened pull request #10840: Remove duplicate include (master...remove-duplicate-include) https://github.com/bitcoin/bitcoin/pull/10840
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18:08 < AsadSalman> Hi     
18:08 < AsadSalman> I'm working in the bitcoin core, trying to get the amount of a transaction sent into the mempool
18:08 < AsadSalman> I'm logging all entries (working on regtestnet, btw)
18:09 < AsadSalman> http://imgur.com/a/olCNk
18:10 < AsadSalman> I am able to get a value out (as you can see in the screenshot)
18:10 < AsadSalman> but that is a sum of both CTxOut
18:10 < AsadSalman> I only want the amount I spent (which was 10BTC, i.e. 1,000,000,000 satoshi)
18:11 < AsadSalman> I don't know what the other CTxOut that is getting summed in is, and how do I get rid of it in the final sum?
18:11 < sipa> it's change
18:11 < AsadSalman> change? I'm not sure what you mean, could you elaborate?
18:12 < sipa> not here, try bitcoin.stackexchange.com
18:12 < sipa> or #bitcoin
18:12 < AsadSalman> okay! (sorry, I thought this would be an appropriate place to ask about core)
18:13 < sipa> your question is about how bitcoin transactions work
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19:47 < gmaxwell> BlueMatt: on 10831 please review the rebase carefully, I'm sick and wouldn't even have done the rebase today but for merge window urgency.
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20:58 < cfields> sipa: still crashes :(
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20:59 < cfields> sipa: i managed to get lldb to step into the asm, but it doesn't show me where I am when i single-step instructions, only that I'm in the asm block. So i have to step 1 instruction at a time and dump registers
21:00 < cfields> the explicit assignments will help though, since now I'll know where I'm looking
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21:03 < sipa> cfields: so you do reach the asm block?
21:03 < sipa> can you count how many instructions inside you execute?
21:03 < cfields> sipa: yea, and past the zero-size check
21:04 < cfields> sipa: yea, i can do that. the recent changes should make it much easier, i'll poke some more
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21:10 < sipa> cfields: thanks for all the time you're spending on thid
21:11 < cfields> sipa: np. it's a big boost.
21:12 < sipa> cfields: for IBD it seems a 200-300 second reduction to block 450k
21:12 < sipa> at the tip the impact is probably larger, but harder to benchmark
21:14 < cfields> wow     
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21:15 < cfields> net-side will benefit at the tip too, though probably not enough to be relevant
21:15 < cfields> sipa: gcc docs says the value of inputs isn't allowed to change. i suppose values of pointers passed in are ok though?
21:16 < sipa> cfields: the only inputs are constants
21:16 < sipa> everything else is marked as an output
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21:17 < cfields> oh right, nm
21:18 < gmaxwell> sha-ni is a bigger boost.
21:18 < sipa> yes, far larger
21:18 < sipa> close to 1000s reduction
21:18 < sipa> more like 800s
21:18 < sipa> (compared to master)
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21:20 < gmaxwell> cfields: I expect even just sse4 to make a very measurable improvement in compact block relay... that is mostly bottlenecked on sha2...
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21:21 < cfields> whoa
21:22 < cfields> have you benchmarked any benefit to adding a dedicated sha2d?
21:25 < sipa> cfields: can you show another disasm?
21:25 < gmaxwell> haven't though if we want further benefit I think what we really want is a hash tree that hashes multiple things at once,  parallel sse4 sha2 is significantly faster than one at a time... and it even looks like for sha-ni for max throughput you want to do at least two at a time.
21:27 < cfields> gmaxwell: yea, i was reading that paper (one of many?) yesterday
21:27 < cfields> sipa: https://pastebin.com/raw/jY0EGwDB
21:27 < cfields> stepping through it now
21:28 < cfields> sipa: note that i haven't hand-modified any flags for that one, so the stack protector is in place where it hasn't been in other dumps
21:29 < sipa> i can see
21:30 < sipa> that
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21:34 < sipa> cfields: during the entire execution, the rdi register should contain a pointer to the SHA256 state
21:34 < sipa> and it should never change
21:35 < sipa> there is not a single instruction in your disasm that modifies that register, so far so good
21:36 < sipa> so the question is... is rdi actually pointing to the state?
21:36 < gmaxwell> sipa: you could try taking cfields disasm and monkey patching it into a binary to try to reproduce he failure.
21:36 < sipa> gmaxwell: nontrivial... linking information would be lost
21:36 < cfields> sipa: actually, hold on. linker stuck a bunch of nops in the final binary...
21:37 < cfields> let met give you a dump of that rather than a dump of just the object
21:37 < sipa> cfields: ah, yes!
21:37 < gmaxwell> linker replaced the object with foldgers crystals,  turns out we noticed.
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21:38 < cfields> uhmm, wtf
21:39 < sipa> the linker replaced the object with foldgers crystals?
21:39 < cfields> ok, i don't trust myself enough here to be a proxy debugger...
21:39 < cfields> sec     
21:41 < cfields> I'm just going to send you the whole dasm. Got anywhere convenient for a 58mb text dump?
21:42 < sipa> sure
21:42 < sipa> mail?
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21:47 < midnightmagic> lol     
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22:06 < sipa> gmaxwell: your foldgers crystals guess is surprisingly accurate
22:09 < cfields> bingo!
22:09 < cfields> got it.
22:10 < sipa> oh?     
22:11 < cfields> now to figure out why :)
22:11 < cfields> -Wl,-dead_strip
22:11 < cfields> it's weird that if it's going to strip it, it doesn't strip the whole thing though
22:12 < cfields> (to be clear, we use -Wl,-dead_strip by default. With that removed, it runs as expected)
22:15 < sipa> cfields: give local labels a name that starts with L
22:15 < sipa> that way the linker treats them as local labels rather than separate functions
22:18 < cfields> sipa: works!
22:19 < sipa> http://www.galloway.me.uk/2011/03/assembly-beware-local-label-names-with-dead_strip-option/
22:19 < sipa> i found thst
22:20 < cfields> hah! well that was some easy googling for once :)
22:24 < cfields> sipa: do you see that documented anywhere?
22:24 < sipa> nope
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22:28 < bitcoin-git> [bitcoin] jnewbery opened pull request #10841: [rpc] Give users one final warning before depracating getinfo (master...deprecate_getinfo) https://github.com/bitcoin/bitcoin/pull/10841
22:30 < cfields> sipa: https://sourceware.org/binutils/docs/as/Symbol-Names.html#Symbol-Names
22:33 < sipa> ah     
22:36 < cfields> sipa: maybe safer to use digits instead, then? Reading the docs like a pedant, I assume some future linker could break win32 the same way.
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22:44 < cfields> nope, that's crashy too
23:22 < sipa> cfields: so, latest PR version works?
23:24 < cfields> sipa: i don't think so, i think that matches what i tried
23:24 < sipa> ?     
23:24 < cfields> sipa: i misread the docs, look at their example
23:25 < cfields> "So for example, the first 1: may be named .L1C-B1, and the 44th 3: may be named .L3C-B44."
23:25 < sipa> A local symbol is any symbol beginning with certain local label prefixes. By default, the local label prefix is `.L' for ELF systems or `L' for traditional a.out systems, but each target may have its own set of local label prefixes. 
23:25 < cfields> apparently the numbers aren't a replacement for the L prefix
23:25 < sipa> you're looking at automatically generated names
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23:26 < sipa> we don't need that; the asm syntax's %= guaranrees uniqueness already
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23:28 < cfields> sipa: sorry, misread the diff
23:29 < sipa> it won't work, i forgot to rename the jumps
23:29 < cfields> yep, with those renamed, all good
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23:39 < phantomcircuit> gmaxwell, btw when i did the walletdb stuff i was doing CWalletDB *pwalletdb=NULL and then initializing pwalletdb only if it was null instead of creating a new function