Opening investigation into persistent build failure present in latest build

1599.41  ARCH="linux32ARMv6"   FLAVOR="pharo.cog.spur" 
/usr/bin/find: `../../../products/phcogspurlinuxhtRPi': No such file or directory
The command "$CHROOT ./scripts/ci/travis_build.sh" failed and exited with 1 during .

Seems to have first failed 2018-12-28 in build #1577

• Generate VM code from VMMaker.oscog-nice.2501 968ed91

Last success was 2018-12-19 build #1553

• A link to the image directory ius more helpful. 96a866b

The intervening commits are:

$ git log --pretty=format:"%h %ad %an - %s" --date=short   96a866b17~1..968ed91bd

968ed91 2018-12-28 Nicolas Cellier - Generate VM code from VMMaker.oscog-nice.2501
0ab0a27 2018-12-24 Eliot Miranda - CogVM source as per VMMaker.oscog-eem.2498 [skip ci] no point building; this alters nothing that is currently built.
e14d4d6 2018-12-21 akgrant43 - Merge pull request #328 from akgrant43/sortBinTray
a20975e 2018-12-21 AlistairGrant - getGoodSpur[64]VM.sh sort for latest VM
7ab324c 2018-12-21 akgrant43 - Merge pull request #326 from shingarov/Cog
1015842 2018-12-21 B.Shingarov - Merge branch 'Cog' of github.com:shingarov/opensmalltalk-vm into Cog
f081826 2018-12-21 B.Shingarov - Merge branch 'Cog' of github.com:shingarov/opensmalltalk-vm into Cog
f575147 2018-12-21 B.Shingarov - Merge branch 'Cog' of github.com:shingarov/opensmalltalk-vm into Cog
a2bdae4 2018-12-21 Boris Shingarov - Check sanity of curled gzip data
aecc9e6 2018-12-21 Boris Shingarov - Check sanity of curled gzip data
5beee8f 2018-12-20 Eliot Miranda - Document the [ci skip] trick/hack/bounty/miracle/undocumented, unobvious yet incredibly helful reducer of CO2 emissions in README.md.
96a866b 2018-12-19 Eliot Miranda - A link to the image directory ius more helpful.

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Side note, just found this command...

debootstrap --arch armhf --foreign --no-check-gpg --include=fakeroot,build-essential jessie /home/travis/build/bencoman/opensmalltalk-vm/armchroot http://archive.raspbian.org/raspbian

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Doing a recursive diff between 0ab0a27 and 968ed91 shows changes under only under src directories.

Searching on "failed" in a diff of their respective build logs shows...

1	issue333-first-bad-build-968ed91.log

5396	Makefile:207: recipe for target 'cogit.o' failed
5430	ranlib B2DPlugin.a	5397	make[1]: *** [cogit.o] Error 1

6821	Makefile:403: recipe for target 'vm/vm.a' failed
6822	make: *** [vm/vm.a] Error 2

6846	/usr/bin/find: `../../../products/phcogspurlinuxhtRPi': No such file or directory

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Since I only regenerated VM sources from VMMaker, and that sources are shared with Squeak/Newspeak, and that Squeak/Newspeak ARM builds success, I convinced myself that it was yet another infrastructure problem with PharoVM.

But if it's cogit.o that failed, then it would be interesting to inquire the diffs inside a #ifdef Pharo...

Note that 0ab0a27 has [skip CI]

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Diff of cogitARMv5.c between 0ab0a27 [GOOD] and 968ed91 [BAD].
Its taken the day to isolate it this far. Heading to bed now. @akgrant, @nicolas-cellier-aka-nice, would you like to have a crack at determining a fix.

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pharo is the only flavour having the plugin built internal
Good to know that may be why only Pharo is failing.

Note that 0ab0a27 has [skip CI]
I've been building 0ab0a27 plus my culled travis.yml and its a GOOD build.
The issue is definitely from 968ed91 introducing return error("subclassResponsibility"); lines
but maybe exacerbated by 0ab0a27.

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Hi Nicolas,

Just adding to what Ben wrote above, the error from the compiler is:

In file included from /home/travis/build/OpenSmalltalk/opensmalltalk-vm/spursrc/vm/cogit.c:7:0:
/home/travis/build/OpenSmalltalk/opensmalltalk-vm/spursrc/vm/cogitARMv5.c: In function 'unalignedLongAt':
/home/travis/build/OpenSmalltalk/opensmalltalk-vm/spursrc/vm/cogitARMv5.c:2300:2: error: void value not ignored as it ought to be
  return error("subclassResponsibility");
  ^

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Hmm, forget what I wrote above, That code appears to have been removed in later commits (f954a91).

cogitXXXX.c generates LOTS of warnings, but appears to build.

Sorry for the noise.

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OK, I see it now, re-generating cogitARMv5.c adds the definition of unalignedLongAt.
The last generation was VMMaker.oscog-eem.2482, so a few things have happened in VMMaker in between, including code generation...
I'm not responsible for any stuff touching unalignedLongAt, but I should not have regenerated...
I wonder why squeak do succeed? Different compiler options?

Eliot has already fixed that in VMMaker.oscog-eem.2502 so as to :

unalignedLongAt: byteAddress
"Some processors need this, but word-oriented RISCs don't. Hence doNotGenerate."
<doNotGenerate>
^self subclassResponsibility

Either I revert, or I try to generate with 2502...

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Already fixed

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Closed #333.

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Already fixed

Are you sure? https://travis-ci.org/OpenSmalltalk/opensmalltalk-vm/builds/474186755?utm_source=github_status&utm_medium=notification is Cog (HEAD) with just the ARM platform and SqueakFFIPrims moved from plugins.int to plugins.ext. The same error occurs in both squeak and pharo.

So the problem appears to be something else than SqueakFFIPrims.

But bed time...

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Sorry, I believed you when you told that cogitXXX was building OK, and it build OK.
But I did not verify anything else.

Still, there is a FFI problem, look in the console:

libtool: compile: gcc -std=gnu99 -g -O2 -fwrapv -DNDEBUG -DDEBUGVM=0 -DPharoVM -DI_REALLY_DONT_CARE_HOW_UNSAFE_THIS_IS -DUSE_MIDI_ALSA -DCOGMTVM=0 -Wall -pthread -DLSB_FIRST=1 -march=armv6 -mfpu=vfp -mfloat-abi=hard -Wno-missing-braces -Wno-unknown-pragmas -Wno-unused-value -Wno-unused-label -Wno-unused-function -Wno-unused-variable -Wno-unused-but-set-variable -DHAVE_CONFIG_H -I/home/travis/build/OpenSmalltalk/opensmalltalk-vm/build.linux32ARMv6/pharo.cog.spur/build -I/home/travis/build/OpenSmalltalk/opensmalltalk-vm/build.linux32ARMv6/pharo.cog.spur/build -I/home/travis/build/OpenSmalltalk/opensmalltalk-vm/platforms/unix/vm -I/home/travis/build/OpenSmalltalk/opensmalltalk-vm/platforms/Cross/vm -I/home/travis/build/OpenSmalltalk/opensmalltalk-vm/spursrc/vm -I/usr/local/include -I/home/travis/build/OpenSmalltalk/opensmalltalk-vm/platforms/Cross/plugins/SqueakFFIPrims -I/home/travis/build/OpenSmalltalk/opensmalltalk-vm/platforms/unix/plugins/SqueakFFIPrims -march=armv6 -mfpu=vfp -mfloat-abi=hard -Wno-missing-braces -Wno-unknown-pragmas -Wno-unused-value -Wno-unused-label -Wno-unused-function -Wno-unused-variable -Wno-unused-but-set-variable -c /home/travis/build/OpenSmalltalk/opensmalltalk-vm/src/plugins/SqueakFFIPrims/SqueakFFIPrims.c -fPIC -DPIC -o .libs/SqueakFFIPrims.o
/home/travis/build/OpenSmalltalk/opensmalltalk-vm/src/plugins/SqueakFFIPrims/SqueakFFIPrims.c:31:3: error: #error As yet no FFI implementation appears to exist for your platform.

error As yet no FFI implementation appears to exist for your platform.

^
/home/travis/build/OpenSmalltalk/opensmalltalk-vm/src/plugins/SqueakFFIPrims/SqueakFFIPrims.c:32:3: error: #error Consider implementing it, starting by adding a subclass of ThreadedFFIPlugin.

error Consider implementing it, starting by adding a subclass of ThreadedFFIPlugin.

^

This happens for Pharo build and in the Squeak build too.
But only Pharo then later fails.
It builds vm.a OK, but fails somewhere later.
The exact error is:

libtool: link: ar cru .libs/JPEGReadWriter2Plugin.a JPEGReadWriter2Plugin.o Error.o jcapimin.o jcapistd.o jccoefct.o jccolor.o jcdctmgr.o jchuff.o jcinit.o jcmainct.o jcmarker.o jcmaster.o jcomapi.o jcparam.o jcphuff.o jcprepct.o jcsample.o jctrans.o jdapimin.o jdapistd.o jdatadst.o jdatasrc.o jdcoefct.o jdcolor.o jddctmgr.o jdhuff.o jdinput.o jdmainct.o jdmarker.o jdmaster.o jdmerge.o jdphuff.o jdpostct.o jdsample.o jdtrans.o jerror.o jfdctflt.o jfdctfst.o jfdctint.o jidctflt.o jidctfst.o jidctint.o jidctred.o jmemdatadst.o jmemdatasrc.o jmemmgr.o jmemnobs.o jquant1.o jquant2.o jutils.o sqJPEGReadWriter2Plugin.o
libtool: link: ranlib .libs/JPEGReadWriter2Plugin.a
libtool: link: ( cd ".libs" && rm -f "JPEGReadWriter2Plugin.la" && ln -s "../JPEGReadWriter2Plugin.la" "JPEGReadWriter2Plugin.la" )
: JPEGReadWriter2Plugin.la
/usr/bin/find: `../../../products/phcogspurlinuxhtRPi': No such file or directory

bed time too...
reading those consoles and trying to guess is exhausting

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Reopened #333.

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Might this be as simple as the macro for the cpu type being wrong/tested wrong? IIRC we actually use ARMv5 witihin the cog so maybe that is causing confusion?

tim
--
tim Rowledge; [hidden email]; http://www.rowledge.org/tim
Strange OpCodes: DO: Deadstart Operator

 
Hi Tim,

On Wed, 2 Jan 2019 at 02:24, tim Rowledge <[hidden email]> wrote:
>
>
> Might this be as simple as the macro for the cpu type being wrong/tested wrong? IIRC we actually use ARMv5 witihin the cog so maybe that is causing confusion?

Do you know which macro it should be?  The options appear to be:

__ARM_ARCH__
__arm32__
ARM32

I'll take a guess at ARM32 first.

Cheers,
Alistair

 

So,

• I generated code from VMMaker.oscog-2501, which introduced a code generation bug from an earlier VMMaker version (unalignedLongAt)
• Eliot soon corrected the problem in VMMaker.oscog-2502, which fixed the unalignedLong, but introduced another problem in SqueakFFIPrims (there is no more if defined(arm) in the new code).

I would say, we can make mistakes, but it will be a lot lot easier to correct if we decompose the modifications!
One feature, one commit.

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Further investigation in #334

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Fixed in 1c6552d

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Closed #333.

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