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  6 2020-01-25T00:56:18  <jeremyrubin> by the way; last call for OP_CTV BIP 119 registrations
  7 2020-01-25T00:56:31  <jeremyrubin> https://utxos.org/workshops/
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 22 2020-01-25T03:21:52  <fanquake>  5-6 gitian sigs each for the 0.19.1rc1 binaries so far, and the windows detached sigs are up, thanks cfields
 23 2020-01-25T03:22:08  <fanquake> jonasschnelli are you able to get some osx detached sigs up soon?
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 50 2020-01-25T08:09:32  <bitcoin-git> [bitcoin] fanquake closed pull request #17565: Fixed freezing GUI on reindex (master...freezing-gui-on-reindex) https://github.com/bitcoin/bitcoin/pull/17565
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 53 2020-01-25T08:12:26  <bitcoin-git> [bitcoin] fanquake closed pull request #16696: validation: static_assert to ensure width in unit class (master...fix-uintbase) https://github.com/bitcoin/bitcoin/pull/16696
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 87 2020-01-25T11:33:39  <jonasschnelli> I have a different hash than wumpus for bitcoin-0.19.1rc1-osx-unsigned.tar.gz (https://bitcointools.jonasschnelli.ch/data/builds/1333/bitcoin-core-osx-0.19-build.assert)
 88 2020-01-25T11:33:52  <jonasschnelli> I guess wumpus'es are off (everyone else has the same)
 89 2020-01-25T11:33:57  <jonasschnelli> 	I pushed the osx detatched signature. Sorry, had to force push since my git email was set wrong.
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 95 2020-01-25T11:38:02  <jonasschnelli> looks like my irc messages end up in the nirvana...
 96 2020-01-25T11:39:30  <jonasschnelli> (good now though)
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100 2020-01-25T11:54:55  <fanquake> jonasschnelli: thanks
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110 2020-01-25T12:48:50  <wumpus> strange...
111 2020-01-25T12:51:29  <wumpus> at least it's only osx that mismatches, linux and windows are ok
112 2020-01-25T12:51:54  <wumpus> will try rebuilding
113 2020-01-25T12:51:57  <fanquake> wumpus might have modified your macOS SDK somehow?
114 2020-01-25T12:52:21  <wumpus> no, not as far as I know
115 2020-01-25T12:52:41  <wumpus> pretty sure this is the same setup I've used to build
116 2020-01-25T12:53:11  <fanquake> ok. If you wanted to upload bitcoin-0.19.1rc1-osx-unsigned.tar.gz I'd take a look
117 2020-01-25T12:55:20  <wumpus> will do! first going to try again to see if it's not just a fluke
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121 2020-01-25T13:17:02  <wumpus> re-built: same problem. The .tar.gz differs (but it is determinstic) but the dmg matches
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123 2020-01-25T13:22:20  <wumpus> fanquake: put up my version of the file here if anyone wants to try to compare it: https://download.visucore.com/bitcoin/bitcoin-0.19.1rc1-osx-unsigned.tar.gz
124 2020-01-25T13:25:33  <fanquake> wumpus: thanks. Having a look
125 2020-01-25T13:26:00  <wumpus> thankyou!
126 2020-01-25T13:28:12  <fanquake> wumpus the difference is in the .note.gnu.build-id section of the dmg tool
127 2020-01-25T13:29:02  <fanquake> can you do a readelf --string-dump .note.gnu.build-id path/to/dmg
128 2020-01-25T13:36:29  <fanquake> wumpus in the second part of that section I'm seeing
129 2020-01-25T13:36:37  <fanquake>  [    10]  r^[T???'Ó½?d?*???f?? for my binary
130 2020-01-25T13:36:45  <fanquake> [    10]  #{?^Vv^[s_?ْb?^D? ? for yours
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133 2020-01-25T13:41:36  <fanquake> Looks like the difference is actually a little bigger.
134 2020-01-25T13:41:38  <fanquake> https://gist.github.com/fanquake/3303ac3bc9efc63293d59df5b81d1cef
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137 2020-01-25T13:47:17  <fanquake> Our libdmg package in the 0.19 branch hasn't been changed since it was introduced, https://github.com/bitcoin/bitcoin/blob/0.19/depends/packages/native_libdmg-hfsplus.mk, so I'm quite interested to no what might be causing this difference
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153 2020-01-25T16:12:53  <kanzure> #proposedmeetingtopic topic idea collection for physical meeting
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155 2020-01-25T16:24:49  <bitcoin-git> [bitcoin] MarcoFalke pushed 2 commits to master: https://github.com/bitcoin/bitcoin/compare/28fbe68fdcac...c26b05c2b78f
156 2020-01-25T16:24:49  <bitcoin-git> bitcoin/master 2d23082 Micky Yun Chan: bump test timeouts so that functional tests run in valgrind
157 2020-01-25T16:24:50  <bitcoin-git> bitcoin/master c26b05c MarcoFalke: Merge #17770: test: bump test timeouts so that functional tests run in val...
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160 2020-01-25T16:25:13  <bitcoin-git> [bitcoin] MarcoFalke merged pull request #17770: test: bump test timeouts so that functional tests run in valgrind (master...bump) https://github.com/bitcoin/bitcoin/pull/17770
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169 2020-01-25T16:49:04  <bitcoin-git> [bitcoin] MarcoFalke closed pull request #17999: refactor: Add ChainClient setMockTime, getWallets methods (master...pr/ipc-clients) https://github.com/bitcoin/bitcoin/pull/17999
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172 2020-01-25T16:49:30  <bitcoin-git> [bitcoin] MarcoFalke reopened pull request #17999: refactor: Add ChainClient setMockTime, getWallets methods (master...pr/ipc-clients) https://github.com/bitcoin/bitcoin/pull/17999
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174 2020-01-25T16:55:13  <hebasto> are detached sigs for 0.19.1rc1 tagged?
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177 2020-01-25T17:02:26  <bitcoin-git> [bitcoin] MarcoFalke closed pull request #17997: refactor: Remove mempool global from net (master...2001-netMempool) https://github.com/bitcoin/bitcoin/pull/17997
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180 2020-01-25T17:02:41  <bitcoin-git> [bitcoin] MarcoFalke reopened pull request #17997: refactor: Remove mempool global from net (master...2001-netMempool) https://github.com/bitcoin/bitcoin/pull/17997
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186 2020-01-25T17:38:28  <wumpus> fanquake: I'm really confused, so there is some difference in a third-party tool, not one of our own executables, and it's mostly just a difference in message?
187 2020-01-25T17:38:51  <wumpus> dmg is replaced by <elf>?
188 2020-01-25T17:39:35  <wumpus> I gues I'll delete the cache and retry...
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201 2020-01-25T19:20:03  <wumpus> that didn't solve it either, I'm baffled
202 2020-01-25T19:29:02  <wumpus> fanquake: in your comparisons in https://gist.github.com/fanquake/3303ac3bc9efc63293d59df5b81d1cef, there's
203 2020-01-25T19:29:04  <wumpus>  -  0x0001ccf0 7c69736f 7c646d67 5d203c69 6e3e203c |iso|<elf>] <in> <
204 2020-01-25T19:29:13  <wumpus>  +  0x0001ccf0 7c69736f 7c646d67 5d203c69 6e3e203c |iso|dmg] <in> <
205 2020-01-25T19:29:32  <wumpus> I don't unnderstand why the text is different in that hexdump, but the hex digits seem the same?
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207 2020-01-25T19:29:57  <bitcoin-git> [bitcoin] sipsorcery opened pull request #18001: Updated appveyor job to checkout a specific vcpkg commit ID (master...vcpkg-specific-version) https://github.com/bitcoin/bitcoin/pull/18001
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209 2020-01-25T19:30:32  <wumpus> they're supposed to be different representation of the same data, right?
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211 2020-01-25T19:30:47  <bitcoin-git> [bitcoin] sipsorcery closed pull request #17995: Load vcpkg port files from a separate repository. (master...vcpkg-ports-separate) https://github.com/bitcoin/bitcoin/pull/17995
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213 2020-01-25T19:34:10  <sipa> Œð|iso|dmg] <in> <
214 2020-01-25T19:34:46  <sipa> is the hex ascii conversion
215 2020-01-25T19:42:38  <wumpus> exactly! so I don't see where the <elf> comes from; the dmg executable definitely differs from the ones generated by other's gitian, but I don't yet know in what way (besides the build id, but that's a kind of hash of some sections)
216 2020-01-25T19:43:22  <wumpus> deleted and regenerating the gitian base image, will delete the cache again, and try yet again if I get a different output
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219 2020-01-25T19:46:21  <wumpus> can someone please put up their "correct" version of bitcoin-0.19.1rc1-osx-unsigned.tar.gz?
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222 2020-01-25T20:04:22  <fanquake> wumpus sure
223 2020-01-25T20:04:48  <fanquake> I'm also confused by the supposed string substitution
224 2020-01-25T20:07:13  <fanquake> wumpus https://uploadfiles.io/xb1hzk0i 5023cb07d685a7f4b6ff3e1c12753da0b7cbf4f492d309d9b74b1f4e76af21eb
225 2020-01-25T20:09:50  <jonatack> fanquake: am gitian building 0.19.1rc1, is that the correct tag atm?
226 2020-01-25T20:10:53  <fanquake> that's the most recent tag, yes
227 2020-01-25T20:11:19  <jonatack> thanks
228 2020-01-25T20:12:04  <jeremyrubin> Independent of Taproot PR; would there be any strong objections to picking *an* implementation of std::optional (from some compiler's includes)  or adding a minimal optional subsititue and eliminating the boost dependency? see https://github.com/martinmoene/optional-bare/blob/master/include/nonstd/optional.hpp and https://github.com/tcbrindle/cpp17_headers/blob/master/include/stx/optional.hpp as copyable examples
229 2020-01-25T20:12:31  <jeremyrubin> (This came up in the context of taproot of not wanting to use optional in consensus to avoid a boost dep)
230 2020-01-25T20:13:02  <gwillen> wumpus: sipa: that hexdump is not a hexdump
231 2020-01-25T20:13:24  <gwillen> some tool has blindly performed an s/dmg/<elf>/ _after_ the hexdump was run, on whatever file contained the output
232 2020-01-25T20:13:50  <gwillen> there is a mistargeted glob somewhere or something in that toolchain
233 2020-01-25T20:14:26  <fanquake> gwillen I guess diffoscope must be broken then
234 2020-01-25T20:15:09  <fanquake> As that's what was used to generate those dumps.
235 2020-01-25T20:15:14  <gwillen> I am not familiar with diffoscope so I can't comment, but (1) the hex in the hexdump always controls, the displayed characters are just for convenience, and (2) you can see the the NUMBER of characters in the right column is wrong
236 2020-01-25T20:15:21  <gwillen> because dmg and <elf> are not the same length
237 2020-01-25T20:16:46  <gwillen> I suspect the same of the --symbols output, probably there is no <elf> in the binary, something is messing with the tool output
238 2020-01-25T20:17:28  <jeremyrubin> Another option would just be to fill in with boost::optional if c++17 isn't available, and std::optional otherwise (so libconsensus can build w/o boost on newer compilers)
239 2020-01-25T20:17:41  <fanquake> I think you might be right. Maybe the difference really is only the Build ID
240 2020-01-25T20:18:55  <fanquake> heh
241 2020-01-25T20:18:57  <fanquake> https://salsa.debian.org/reproducible-builds/diffoscope/issues/80
242 2020-01-25T20:19:20  <fanquake> wumpus The iso <elf> substitution is a bug in diffoscope
243 2020-01-25T20:19:49  <fanquake> I think the only difference between the two tools might actually just be the build ID
244 2020-01-25T20:19:50  <sipa> fanquake: more like crazy feature
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246 2020-01-25T20:20:27  <fanquake> sipa a good time waster
247 2020-01-25T20:20:36  <gwillen> oh, good find fanquake, thanks, I was going to go nuts trying to track that down
248 2020-01-25T20:22:02  <gwillen> I guess you named one of the files "dmg" when passing it to diffoscope, triggering the overzealous search-and-replace on only one side
249 2020-01-25T20:22:56  <fanquake> gwillen yea the binary is just named dmg
250 2020-01-25T20:23:11  <fanquake> I was doing diffoscope wumpus.dmg dmg
251 2020-01-25T20:23:26  <gwillen> that is a pretty nasty bug / misfeature in diffoscope
252 2020-01-25T20:23:34  <fanquake> If I swap that for diffoscope wumpus.dmg fanquake.dmg I see
253 2020-01-25T20:24:09  <fanquake> https://gist.github.com/fanquake/c2108e690a320e23727c80b839197b91
254 2020-01-25T20:26:38  <gwillen> that build ID is allegedly supposed to be a hash of the binary contents to make it reproducible, I wonder what went wrong here
255 2020-01-25T20:29:58  <gwillen> I wonder if the way build ID is computed changed between versions of ld -- the original default is documented to have been md5, whereas the current default is allegedly sha1
256 2020-01-25T20:32:42  <fanquake> From what I understand, Build ID isn't necessarily a content hash, almost more like a UUID. However will continue looking tomorrow.
257 2020-01-25T20:32:48  * fanquake goes back to sleep
258 2020-01-25T20:33:54  <gwillen> there is apparently a --build-id flag you pass to ld, which you can set to values like "sha1" or "md5" or "uuid" or "0x..." (a constant)
259 2020-01-25T20:34:04  <gwillen> see e.g. https://fedoraproject.org/wiki/RolandMcGrath/BuildID
260 2020-01-25T20:34:40  <sipa> fanquake: so that's how you do it
261 2020-01-25T20:34:43  <gwillen> but given apparently identical inputs, and a difference in build ID on exactly one machine, I definitely wonder if the difference is the ld on that machine is doing something funny
262 2020-01-25T20:35:15  <sipa> you have an AI to wake you up when there are interesting IRC or github conversations and sleep in between
263 2020-01-25T20:36:28  <fanquake> sipa: yea something fancy like that
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268 2020-01-25T21:06:54  <bitcoin-git> [bitcoin] sipa opened pull request #18002: Abstract out script execution out of VerifyWitnessProgram() (master...202001_execute_witness) https://github.com/bitcoin/bitcoin/pull/18002
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271 2020-01-25T21:19:09  <wumpus> fanquake: after building with a newly generated base image I managed to get the same output as everyone else now, pushed new sigs
272 2020-01-25T21:19:55  <wumpus> fanquake: likely it's some ubuntu package difference that caused it; will still do a comparison just to be sure
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274 2020-01-25T21:24:56  <wumpus> right: the only difference I get is the .note.gnu.build-id section -- well, okay, that's only a id and can't be an implanted backdoor at least :-) thank you for your help fanquake, seems this has been resolved
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279 2020-01-25T21:57:14  <fanquake> wumpus great!
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