github.com/moarvm/moarvm | IRC logs at colabti.org/irclogger/irclogger_logs/moarvm Set by AlexDaniel on 12 June 2018. |
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Geth | MoarVM: 47892d379c | (Stefan Seifert)++ | 7 files Avoid signedness issues by using MVMuint8 in stream decoder char may be signed or unsigned depending on compiler and architecture. |
09:46 | |
MoarVM: eb3d981d75 | (Stefan Seifert)++ | 2 files Do not rely on signedness of char in (gb2312|gb18030)_decode char may be signed or unsigned depending on compiler and architecture. Use MVMuint8 internally instead. Fixes compiler warnings on ARM. |
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nine | With this we consistently use MVMuint8 internally in string processing (encoding and decoding) while we continue to use char * in interfaces. | 09:48 | |
We were already rather close to that anyway. | 09:49 | ||
dogbert17 | nine++ | 10:06 | |
and the failing tests now passes on the RPi 4, yay | 10:09 | ||
nine | If nothing else comes off this work, at least I've learned a lot about C in this endeavour :) | 10:22 | |
dogbert17 | nine: are you done with the cleanup or do you intend to fix even more stuff? | 10:40 | |
nine | Well for now I'm finally working of fixing my NativeCall screwup. | 10:42 | |
dogbert17 | the one you mentioned the other day | ||
nine | yep | 10:43 | |
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nine | I think I'll add a flag to the NativeCall repr, so the higher layer can indicate whether it's safe to serialize the lib_name. And a similar flag to Distribution::Resource. That way CompUnit::Repository::Staging can prevent the build path from getting serialized. | 10:51 | |
The cost is having to go through the generic NativeCall wrapper during the BUILD with the Staging repo and during the first call of a native sub of a module loaded from a package. | 10:53 | ||
Initially I thought I thought I could get away with being able to serialize a different lib name than the one used for setup. But a module installed into the Staging repo may get used (and one of its native subs called) during the build of another module in the same repo. In that case it would'nt find its library. | 10:56 | ||
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dogbert17 | nine: wrt the warnings you fixed. Is it your intention to keep the 'extra' compiler options which shows them all or will they be removed now? | 12:23 | |
nine | Oh keeping those was very much the point of fixing the existing violations | 12:30 | |
dogbert17 | the reason for asking is that the gcc (8.3.0) on the RPi 4 enables -Wunused-variable which in turn leads to a mass of warnings | 12:33 | |
I guess that the gcc devs changes what the 'extra' options does from time to time | 12:34 | ||
nine | -Wunused-variable seems to be included in -Wall already, which is why I fixed a host of them: github.com/MoarVM/MoarVM/commit/75...02b9fb6c25 | 12:36 | |
Don't know why your gcc would show additional ones though. Could be that they are in code paths that only get compiled on ARM? | 12:37 | ||
dogbert17 | aha, so perhaps it's an RPi specific problem, What happens is that the same warning is printed like 100 times, more specifically this one: | 12:38 | |
src/core/interp.h: In function āMVM_BC_get_N64ā: | |||
src/core/interp.h:119:27: warning: unused variable āwhereā [-Wunused-variable] | |||
const MVMuint8 *const where = cur_op + offset; | |||
Geth | MoarVM: be5f206c85 | (Stefan Seifert)++ | src/gc/collect.c Remove bogus debug assertion in the GC's process_worklist The assertion checks if a pointer the GC encountered hasn't already been updated to the object's new location. It was added in the early days and the author nwc10 doesn't seem to remember the reason behind it. In the case in which the assertion would fail, the pointer would just get ... (5 more lines) |
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nine | dogbert17: ah, of course. The variable is used in code depending on MVM_CAN_UNALIGNED_NUM64 which x86 does but ARM doesn't | ||
So moving it down a line will fix the warnings | |||
Sames is true for MVM_BC_get_I64 | 12:40 | ||
dogbert17 | it doesn't complain about the last one though | 12:41 | |
nine | still true | ||
dogbert17 | let me give it a try | 12:43 | |
yes, that change led to a massive improvement | 12:46 | ||
among the ones that are left I see something I missed yesterday | 12:47 | ||
src/strings/ascii.c: In function āMVM_string_ascii_decodeā: | |||
src/strings/ascii.c:18:27: warning: comparison is always true due to limited range of data type [-Wtype-limits] | |||
else if (ascii[i] >= 0) { | |||
nine | Oh, and I missed that file today. MVM_string_ascii_decode should really use an MVMuint8 internally, like here: github.com/MoarVM/MoarVM/blob/mast...atin1.c#L8 | 12:51 | |
dogbert17 | perhaps I should fix that so that you can concentrate on the Nativecall stuff | 12:54 | |
nine | would be nice :) | 12:55 | |
dogbert17 | :) | ||
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Geth | MoarVM: dogbert17++ created pull request #1219: Move incorrectly placed variable declaration which causes a lot of waā¦ |
13:18 | |
dogbert17 | There's one of them. I only changed MVM_BC_get_N64 as MVM_BC_get_I64 looks legit to me, i.e. 'where' is used in both branches there | 13:19 | |
nine | Oh, right! | 13:20 | |
Geth | MoarVM: 4924390c76 | (Jan-Olof Hendig)++ | src/core/interp.h Move incorrectly placed variable declaration which causes a lot of warnings on ARM MVM_CAN_UNALIGNED_NUM64 is not used by ARM, it is on x86 though, which in turn leads to gcc outputting a bucketload of unused-variable warnings on ARM based systems like e.g. the RPi. |
13:21 | |
MoarVM: 47a0beb6d6 | niner++ (committed using GitHub Web editor) | src/core/interp.h Merge pull request #1219 from dogbert17/fix-warnings-on-ARM Move incorrectly placed variable declaration which causes a lot of waā¦ |
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MasterDuke | these are the warnings i currently see when building moarvm with gcc gist.github.com/MasterDuke17/71f16...7c94a0051b | 13:33 | |
nine | MasterDuke: well....fix them? :) | 13:38 | |
MasterDuke | heh, i probably will give it a go later. i also see some when building nqp and rakudo (mostly in the runner code), will ping patzim about them | 13:41 | |
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Geth | MoarVM: 610e05fa0f | (Stefan Seifert)++ | 2 files Give upper layers a way to veto serializing a NativeCall's lib_name There are cases where we actually don't want the library's path to get serialized into the bytecode file, e.g. when building a module into a Staging repository for packaging. Give the upper layer a way to make us aware of that by having them set the "serialize_lib_name" attribute on the native callsite. |
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dogbert17 | MasterDuke: btw, there's a possibility that M#1093 has been fixed. Have you had the chance to try it on your system? | 15:01 | |
synopsebot | M#1093 [open]: github.com/MoarVM/MoarVM/issues/1093 SEGV when using Proc::Async | ||
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dogbert17 | hmm, I just got two SEGV's while running a spectest | 15:22 | |
dogbert17 tries to repro ... | 15:33 | ||
nine | Did you get core dumps? | 15:36 | |
dogbert17 | I did, but the first one was overwritten by the second and that one looked messed up | 15:39 | |
besides, I suspect that I didn't have debug info on | 15:40 | ||
nine | systemd is really great in these cases. I get all my core dumps compressed and named after the executable + timestamp in /var/lib/systemd/coredumps | 15:41 | |
dogbert17 | do you have to do anything specific in order to get that behavior | ||
fwiw, the failing files were t/spec/S07-hyperrace/for.t and t/spec/S32-io/io-cathandle.rakudo.moar | 15:44 | ||
nine | I didn't do anything. May be openSUSE'd defaults. man systemd-coredump should be a good start | ||
dogbert17 | will check | 15:45 | |
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dogbert17 | also, t/spec/S16-io/watch.t is flapping | 16:25 | |
lizmat | dogbert17: on what OS | 16:26 | |
? | |||
dogbert17 | Linux | 16:27 | |
lizmat | ok, then I have no idea | ||
MacOS sometimes gets sluggish in delivering events when under load | |||
dogbert17 | it seems to be the same for me, running a spectest in the background makes the error appear rather quickly | 16:36 | |
it always claims to have missed one of the 10 events it is looking for | |||
interesting, one of the test files, i.e. t/spec/S29-os/system.t, can actually trigger a core dump without any tests failing | 16:54 | ||
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