| --- Log opened Sat Apr 12 00:00:09 2014 |
| 00:00 | <@celticminstrel> | Why would a vector destructor try to free memory that is not allocated... |
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| 02:18 | <@celticminstrel> | Valgrind is now outputting infinite "Signal 11 being dropped from thread 0's queue". |
| 02:26 | <@celticminstrel> | And I have no idea if anything is happening. |
| 02:32 | <~Vornicus> | Signal 11 is SIGSEGV, segmentation fault |
| 02:44 | <@celticminstrel> | So uh... |
| 02:44 | <@celticminstrel> | That probably means it's not doing anything. |
| 02:45 | <&McMartin> | You've got a null/wild pointer exception |
| 02:45 | <@celticminstrel> | And any output that might've pointed to the cause is lost, unless valgrind is writing to somewhere in addition to stdout. |
| 02:48 | | Netsplit *.net <-> *.split quits: @Syloq, @Orthia, @Ogredude, @Namegduf, @Alek, @gnolam, @McMartin, @JackKnife, froztbyte, ToxicFrog, (+2 more, use /NETSPLIT to show all of them) |
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| 03:00 | <@celticminstrel> | And it took forever to get to this point in the first place; I had to click a total of seven buttons, and with valgrind it runs even slower than with Apple's instrumentation programs. |
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| 03:22 | <@celticminstrel> | Huh. It says there are two calls to operator new from my PICT load function. |
| 03:23 | <@celticminstrel> | One of them has an invalid source line. |
| 03:23 | <@celticminstrel> | (This is Apple's instrumentation, not valgrind.) |
| 03:23 | <@celticminstrel> | And comes from within shared_ptr. |
| 03:32 | <@celticminstrel> | Might be normal. |
| 03:34 | <@celticminstrel> | On the other hand, making it a bare pointer may have possibly fixed something. |
| 03:35 | <@celticminstrel> | On the other other hand, still getting strange inconsistent errors. |
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| 04:04 | <@celticminstrel> | On the other other other hand, at least they're in my code, roughly speaking. |
| 04:05 | <@celticminstrel> | ...then the next one I get, isn't. Sigh. |
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| 04:08 | | * celticminstrel tries running the static analyzer to see if it turns up anything useful. |
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| 04:13 | <@celticminstrel> | Nope. |
| 04:14 | <~Vornicus> | What precisely is going on here? |
| 04:19 | <~Vornicus> | I get the impression you're reading PICT resources, but I'm not entirely sure what you're doing that would cause this to spew pointermess everywhere. |
| 04:22 | <@celticminstrel> | The crash is happening after the PICT resource has been read. Exactly where varies; I thought it might be related to deleting the array in which I had temporarily stored the converted pixel data, though I think that's probably not the case now. |
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| 04:23 | <@celticminstrel> | I think the errors are always in the destructors of STL objects. Maybe in the constructors too sometimes. |
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| 04:24 | <@celticminstrel> | Apparently other places too, but it seems to be consistently within the STL. |
| 04:24 | <@celticminstrel> | And I get SIGABRT. |
| 04:24 | <@celticminstrel> | According to the debugger. |
| 04:25 | <@celticminstrel> | Plus "incorrect checksum for freed object - object was probably modified after being freed." |
| 04:26 | <@celticminstrel> | Hm. |
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| 04:26 | <@celticminstrel> | That could indicate writing past the end of a buffer, right? |
| 04:27 | <&ToxicFrog> | Usually if you are getting crashes inside the STL or libc or the like, it means you are doing something unheamy and trashing data structures it depends on, probably writing past the start/end of a buffer or chasing pointers to freed objects. |
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| 04:29 | <@celticminstrel> | I already installed a "guard" against reading past the end of the resource in memory, maybe I should try doing the same for the temporary pixel buffer. |
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| 04:46 | <@celticminstrel> | Looks like that's what was happening. |
| 04:47 | <@celticminstrel> | Oh! I know why. I allocated a number of bytes equal to the number of pixels. I need four times as much space. |
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| 04:55 | <@celticminstrel> | Apparently even that isn't enough. |
| 04:56 | <@celticminstrel> | Or I'm doing something else wrong. |
| 04:59 | <@celticminstrel> | I'm doing width * height * bytes per pixel, but it's still overflowing. |
| 05:00 | <@celticminstrel> | It's overflowing approximately halfway through. |
| 05:01 | <@celticminstrel> | (ie at scanline 36 of 72) |
| 05:04 | <@celticminstrel> | Oh, it's that issue again. |
| 05:04 | <@celticminstrel> | The one where I somehow only use every second pixel. |
| 05:04 | <@celticminstrel> | ...oh, duh. |
| 05:05 | <@celticminstrel> | I just realized why. |
| 05:06 | <@celticminstrel> | I was multiplying indices by 8 instead of 4. |
| 05:10 | | Kindamoody[zZz] is now known as Kindamoody |
| 05:10 | <@celticminstrel> | Sometimes the XCode debugger just sort of hangs and stops responding to requests to step, etc. |
| 05:10 | <@celticminstrel> | It's really annoying. |
| 05:13 | <@celticminstrel> | Works now, and the weird errors didn't happen either. |
| 05:23 | <~Vornicus> | hooray normal operation |
| 05:34 | <@mac> | celticminstrel: Well, of course it does. I mean, how can you debug the debugger~? |
| 05:34 | <@celticminstrel> | Pffft. |
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| 05:58 | <@celticminstrel> | Okay, the obvious way of opening a resource fork didn't work. |
| 06:11 | <@celticminstrel> | Oh yeah, is there a command I can use to filter the output of another command? |
| 06:12 | <@celticminstrel> | I can use grep, but it exits with a status code of 1 if no matches were found. I just want to filter, I don't care whether matches were found. |
| 06:12 | <@celticminstrel> | I need it to exit with a status of 0. |
| 06:14 | <@mac> | celticminstrel: There is no 'don't complain about not matching' flag? |
| 06:14 | <@celticminstrel> | I didn't find one. |
| 06:17 | <&McMartin> | Wrap grep in a script that then returns 0 |
| 06:18 | <@celticminstrel> | ...I could do that by defining a shell function, couldn't I? |
| 06:18 | <@celticminstrel> | ...hm, can I? |
| 06:20 | | * celticminstrel tries it. |
| 06:24 | <@celticminstrel> | As usual, the bash man-page fails me. |
| 06:26 | <@celticminstrel> | The answer seems to be yes. |
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| 06:37 | <@celticminstrel> | With that, I sleep. Probably. |
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| 13:18 | | * McMartin writes out a couple pages of Scheme longhand |
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| 18:15 | <@AnnoDomini> | Is it silly to use "if (condition) { /* nothing */ } else { do_stuff(); }"? |
| 18:15 | <@Azash> | Some languages have the unless keyword |
| 18:15 | <&McMartin> | It's almost always better to do "if (!condition) { do_stuff(); }" |
| 18:15 | <@ErikMesoy> | Yes. I'd use "if not condition" or "if (!condition)" |
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| 18:25 | <@celticminstrel> | Is there a way to git stash only a subset of the working copy changes? |
| 18:28 | <@celticminstrel> | Without staging the changes I don't want stashed? |
| 18:28 | <@celticminstrel> | (Though, staging them and then stashing does stash the staged changes, actually.) |
| 18:30 | <@celticminstrel> | ... |
| 18:30 | <@celticminstrel> | --patch |
| 18:30 | <@celticminstrel> | Why did I never notice this before. |
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| 20:23 | <@celticminstrel> | Why is Firefox using 100%+ CPU. |
| 20:23 | <@Azash> | Flash, scripts, etc? |
| 20:23 | <@Azash> | Drawing lots of pretty pretty pictures? |
| 20:24 | < FurryHelix> | You've obviously enabled benchmark-mode. |
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| 20:25 | <@celticminstrel> | It doesn't seem to be Flash. |
| 20:25 | <@celticminstrel> | And if it's scripts, I have no known way of determining which scripts. |
| 20:26 | <@celticminstrel> | It couldn't be sync, could it? |
| 20:39 | | macdjord|slep is now known as macdjord|out |
| 20:45 | <@celticminstrel> | Sometimes I get unresponsive scripts with a chrome: address. |
| 20:46 | <@celticminstrel> | Like chrome://browser/content/browser.js |
| 20:51 | <@celticminstrel> | I don't really understand why the Flash installer requires me to quit Skype (which, as far as I know, doesn't use Flash) but not Steam (which definitely uses Flash). |
| 20:54 | < Durnad> | It's cause installers/uninstallers for Windows are universally made by the braindamaged. |
| 20:54 | <@Bastard> | s/by/for |
| 20:54 | <@celticminstrel> | This isn't Windows, but okay. |
| 20:56 | <@celticminstrel> | Does that error imply an extension is causing it? |
| 20:56 | <@celticminstrel> | Or is browser.js strictly Firefox stuff? |
| 20:56 | <@Azash> | https://www.youtube.com/watch?v=pjs0_0jeSqk |
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| 21:17 | <@celticminstrel> | Now it's saying tabbrowser.js (or was it xml) is unresponsive. |
| 21:26 | <@celticminstrel> | How likely is it that the number of tabs open is a significant factor...? |
| 21:26 | <@celticminstrel> | It's never been this slow before even with lots of tabs. |
| 21:26 | <@celticminstrel> | (Slow restoring them, that is; I restarted Firefox.) |
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| --- Log closed Sun Apr 13 00:00:25 2014 |