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[00:15:34] <CIA-6> 03mhaberler 07master * r46cd4967f874 10/configs/ (8 files in 3 dirs): configs/sim: fix the right hal file, create links
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[05:58:01] <seb_kuzminsky> we use git submodules at work, and i dont like working with them
[05:58:21] <seb_kuzminsky> for the problem you guys were talking about, i think separate packages would be better
[05:58:25] <seb_kuzminsky> like you decided...
[06:06:51] <psha[work]> logger[psha]_: .
[06:07:20] <psha[work]> +1 for separate package
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[07:39:31] <CIA-6> 03mhaberler 07master * r4bf282332183 10/src/emc/rs274ngc/ (4 files): interp: cleanup static analyzer warnings
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[08:10:44] <CIA-6> 03cmorley 07v2.5_branch * r6d3287d2cdb5 10/src/emc/usr_intf/pncconf/pncconf.py: pncconf -fix resolver config missing INI settings
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[09:46:53] <seb_kuzminsky> looks like mhaberler found the clang builds :-)
[09:47:00] <mhaberler> yess
[09:47:27] <mhaberler> how do you get 'make' to use clang? CC=clang, CXX=clang or somesuch?
[09:48:05] <seb_kuzminsky> "scan-build make"
[09:48:20] <seb_kuzminsky> you need it for configure too
[09:48:30] <seb_kuzminsky> here's how the buildbot does it:
http://buildbot.linuxcnc.org/buildbot-admin/builders/precise-amd64-sim-clang/builds/51
[09:51:29] <seb_kuzminsky> ugh, it's 3 in the morning here, good night
[10:00:36] <mhaberler> provided I get past the login
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[10:57:04] <alex_joni> mhaberler: remove -admin from the url
[10:57:14] <alex_joni> http://buildbot.linuxcnc.org/buildbot/builders/precise-amd64-sim-clang/builds/51
[10:57:34] <mhaberler> how obvious;)
[11:03:26] <alex_joni> it happend a lot before
[11:03:38] <alex_joni> seb uses the buildbot-admin links, as he's the admin (obvious)
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[13:55:36] <jepler> why I am deeply suspicious of changing code based only on the output of analysis tools:
http://anonscm.debian.org/viewvc/pkg-openssl/openssl/trunk/rand/md_rand.c?r1=141&r2=140&pathrev=141&view=patch
[13:56:08] <jepler> (I think the tool was valgrind in this case)
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[15:38:41] <seb_kuzminsky> bad patches ad bad, no matter what prompts you to write them
[15:39:17] <seb_kuzminsky> i think the debian openssl fiasco was more due to the developer not understanding the code ve was changing, rather than being valgrind's fault
[15:48:45] <jepler> I have seen these tools used as a substitute for understanding the code
[15:49:03] <jepler> Heck, I've used them that way
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[15:54:58] <seb_kuzminsky> me too i bet
[15:55:12] <seb_kuzminsky> there are some gems in our repo of that nature, e3529d95 comes to mind ;-)
[15:55:16] <seb_kuzminsky> oh hi alex!
[15:56:12] <cradek> without proposing that SA is bad, I've noticed that when programmers have SA, they touch code they wouldn't otherwise touch, either because they don't understand it, or because they have no reason to feel there is anything wrong with it.
[15:56:46] <seb_kuzminsky> yeah that sounds true
[15:57:46] <seb_kuzminsky> it finds bugs that your users and testing aren't stepping on
[15:57:56] <seb_kuzminsky> (the bugs that users and tests find get fixed much earlier)
[15:58:35] <cradek> yeah and upon rereading I notice it's a stupid thing to say (that's the whole point of SA)
[15:58:59] <seb_kuzminsky> i think it's still valuable to fix those "potential" bugs, in case you later change the code or the use the code in new ways, so that you do step on them
[15:59:33] <cradek> I agree fixing undiscovered bugs is good.
[16:00:04] <seb_kuzminsky> 74e777a is that way - as soon as the calling code made a mistake, the intermodule would segfault
[16:00:19] <cradek> unfortunately, some mistakenly think that blindly twiddling the code until the SA shuts up is the easier approach :-/
[16:01:01] <seb_kuzminsky> to them i'd suggest an even easier approach: alt-tab from your programming editor to your youtube window :-)
[16:01:09] <cradek> haha
[16:01:23] <seb_kuzminsky> well i'm off to work to add some new bugs to our product
[16:01:28] <seb_kuzminsky> bye friends
[16:01:30] <archivist> I was finding stuff with valgrind but devs would not take on board though, grrr
[16:01:33] <cradek> bad programmer! go work on unity!
[16:01:53] <cradek> bye seb.
[16:02:55] <cradek> wow e3529d9 is a gem.
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[16:33:15] <jepler> e3529d9 is an example of the worst sort of SA-inspired change, and 74e777a is an example of a good SA-inspired change
[16:33:45] <jepler> we can argue over whether the number of bad changes are enough to eclipse the benefit of the good changes for any particular project's culture
[16:34:33] <cradek> yes but let's not, I'm busy watching youtube
[16:35:00] <jepler> here's a video for you to watch (from a blog seb pointed me at):
http://fuckyeahfluiddynamics.tumblr.com/post/17959077109
[16:36:15] <cradek> cool!
[16:40:04] <jepler> (actually there are much worse than e3529d9 since as far as I know that didn't break anything.)
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[18:18:58] <CIA-6> 03seb 07master * r6f336b26189f 10/src/emc/rs274ngc/canonmodule.cc: fix a NULL pointer deref
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[18:36:59] <cradek> GoSebGo: that made me lol, so I had to read it to everyone in the lunchroom. :-)
[18:39:24] <CIA-6> 03seb 07v2.5_branch * r567543c132f7 10/src/hal/utils/halcmd_main.c: remove a dead store
[18:39:35] <GoSebGo> Heh
[18:40:05] <GoSebGo> Mmm, lunch, good idea
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[18:49:34] <jepler> GoSebGo: not sure why you made that last change on v2.5_branch
[18:53:10] <GoSebGo> You think it should have been on master? Or 2.4?
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[18:53:44] <jepler> master
[18:54:31] <GoSebGo> Ok i'll keep sa fixes on master from now on
[18:55:07] <jepler> particularly for a change that isn't fixing even a theoretical crash
[18:55:14] <cradek> IMO it's not that it was a SA fix, it's that ... yeah
[18:55:41] <GoSebGo> Just getting rid of noise...
[18:55:43] <jepler> while I assume your calculus was "this doesn't even change anything, so it's safe for a maintainance branch"
[18:56:06] <GoSebGo> Yes
[18:56:19] <jepler> huh, genserkins only supports 6 joints
[19:05:46] <cradek> weirder, I think it fails to work with fewer than 6
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[19:15:58] <GoSebGo> Sounds like a job for assert() :-)
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[19:28:45] <CIA-6> 03jepler 07master * rf1fc859b4e09 10/src/emc/pythonplugin/python_plugin.cc: pythonplugin: initialize all scalar fields in constructor
[19:28:46] <CIA-6> 03jepler 07master * r0d38ce0c309c 10/src/emc/rs274ngc/canonmodule.cc: rs274: fix "format-security" warning
[19:28:47] <CIA-6> 03jepler 07master * rd1b67a09e5d2 10/src/emc/sai/saicanon.cc: sai: print CANON_ERRORs to the output
[19:28:47] <CIA-6> 03jepler 07master * r367a4f5fe858 10/tests/remap/fail/canon_error/ (8 files): tests: add a test of CANON_ERROR from Python
[19:28:59] <jepler> .. now you've got me doing it
[19:30:27] <GoSebGo> Great! :-)
[19:30:46] <GoSebGo> Hm, i should add valgrind to the bbot
[19:32:31] <jepler> unfortunately, any python program generates many false positive "conditional branch depends on uninitialized" warnings :-( I think there's a valgrind suppression file for them though
[19:32:35] <jepler> ==12270== Invalid read of size 4
[19:32:37] <jepler> ==12270== at 0x42DBE79: PyObject_Free (in /usr/lib/libpython2.6.so.1.0)
[19:33:30] <jepler> zless /usr/share/doc/python2.6/README.valgrind.gz
[19:34:00] <jepler> the valgrind-python.supp file doesn't seem to be shipped by debian, or my apt-file is lying to me
[19:39:25] <CIA-6> 03jepler 07master * r372be8dbcae6 10/tests/remap/fail/ (body-py/test.sh epilog/test.sh): remap tests: Use "! rs274" to assert failure
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[19:51:30] <skunkworks> You guyzz!
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[20:56:57] <alex_joni> jepler: genserkins should work with 6-9 joints
[20:57:15] <alex_joni> but it doesn't work with less than 6 (you need dummy ones if you want less)
[20:58:01] <jepler> alex_joni: looks like you have to recompile to increae GENSER_MAX_JOINTS from 6
[20:58:10] <jepler> .. and you will probably be hitting kernel stack limits when you do
[20:59:09] <alex_joni> hmm
[20:59:25] <alex_joni> been a while, but if you say so.. :)
[21:00:18] <alex_joni> right, GENSER_MAX_JOINTS is at 6 now
[21:00:31] <alex_joni> so far nobody complained
[21:00:51] <alex_joni> there was someone trying to use genserkins for a linear axis, but he recompiled anyway
[21:04:38] <alex_joni> cradek:
http://explosm.net/db/files/Comics/guest6/CRW_jay_a_reaction.png
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[21:11:59] <cradek> hahaha
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[22:57:18] <CIA-6> 03andypugh 07v2.5_branch * rb3900e7df8b1 10/src/hal/drivers/mesa-hostmot2/mesa_autoconf.c: On Intel CPUs a 32-bit shift of a 32-bit number leaves the number unchanged, rather than zeroed.
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