OS X - Can we switch the Mix binaries to be Debug?

[bobsummerwill]

As a workaround for the Heisenbug, can we switch the OS X Mix binaries to be Debug?

See https://gitter.im/ethereum/cpp-ethereum-development?at=574f4d816bbc2d1d4df0560a

[bobsummerwill]

Adding @ktorn, @SorenPeterson and @sussegaduss, all of whom are currently hindered by the broken El Capitan Mix binaries, and can then verify this workaround.

[bobsummerwill]

See also #565 (Fix the Heisenbug!)

[SorenPeterson]

Sorry, but I don't quite understand what the workaround is. Will you explain it to me?

[bobsummerwill]

The workaround is something which I still need to do, and which this issue is tracking.

My workaround will be to switch our automation to use Debug configuration for our Mix.app file in the DMG, because that doesn't hit the Heisenbug.

I will be working on that today and will let you guys know when there is a DMG for you to try :-)

Sorry for the lack of clarity, @SorenPeterson!

[bobsummerwill]

Could you guys try this DMG, please? Thanks!

http://52.28.164.97/job/ethbinaries-build/472/label=osx_elcapitan/artifact/webthree-umbrella/build/cpp-ethereum-osx-elcapitan.dmg

Or, for Yosemite ...

http://52.28.164.97/job/ethbinaries-build/472/label=osx_yosemite/artifact/webthree-umbrella/build/cpp-ethereum-osx-yosemite.dmg

[bobsummerwill]

Or better yet:

• https://builds.ethereum.org/cpp-binaries-data/develop/cpp-ethereum-osx-elcapitan.dmg
• https://builds.ethereum.org/cpp-binaries-data/develop/cpp-ethereum-osx-yosemite.dmg

[sussegaduss]

Hi all..

im not being able to download.. it downloads 2mb and then the connection get lost!
None of the links above works. All gets the same error.
Can you verify this?

[bobsummerwill]

Nope - all 4 are working for me right now. Are you in a remote area? Is your network usually reliable?

[sussegaduss]

Downloaded and still getting the same error... before it opens i get "quit unexpectedly" again...

[ktorn]

I successfully downloaded both El Capitan DMGs, but on both occasions Mix still crashes on startup with the same error.
Currently building from source with cmake -DCMAKE_BUILD_TYPE=Debug as you suggested in #562, but I guess it will run into the same issue (assuming that's what you did with the above DMGs).

[bobsummerwill]

Bah! I see the issue now. Sorry, guys.

There are multiple branches with very similar looking code, and the fix was in the wrong place.

Around the loop again. Stay tuned, and I will give you a heads up when the DMGs are refreshed.

[bobsummerwill]

OK - these interim ones are ready again now ...

http://52.28.164.97/job/ethbinaries-build/472/label=osx_elcapitan/artifact/webthree-umbrella/build/cpp-ethereum-osx-elcapitan.dmg

http://52.28.164.97/job/ethbinaries-build/472/label=osx_yosemite/artifact/webthree-umbrella/build/cpp-ethereum-osx-yosemite.dmg

[ktorn]

Sorry to report that it still crashes.

The crash log shows that the thread number changed from 7 to 9 but it is still the same thread name QThread and still on the same call of the thread stack: dev::eth::PathGasMeter::handleQueueItem()

[bobsummerwill]

Ugh. Bloody Heisenbug. Thanks for testing, @ktorn.

CC @VoR0220, @chriseth.

I have switched the OS X binaries to Debug, but we're still not happy. So I will close this issue, and add the people from this thread onto the Heisenbug issue.

[SorenPeterson]

It doesn't help everyone else... But that link (https://builds.ethereum.org/cpp-binaries-data/develop/cpp-ethereum-osx-elcapitan.dmg) worked for me. Thanks so much.

[bobsummerwill]

Thanks for that follow-up, @SorenPeterson.

Please could you try again, @ktorn, with that "final location" DMG? It should work :-)

[ktorn]

Unfortunately it doesn't work for me. Still crashes.

Thread 7 Crashed:: QThread
0   libevmasm.dylib                 0x0000000108779259 dev::eth::PathGasMeter::handleQueueItem() + 2793

[bobsummerwill]

@ktorn Please can you do a brew update and brew upgrade, please? You might be out-of-sync on those other packages compared to us.

[ktorn]

brew update and brew upgrade all done. brew doctor reports no warnings. Latest DMG still crashes, on 2 machines with El Capitan.
In the mean time I'm resorting to running it under Ubuntu in a VBox VM.

[bobsummerwill]

Alrighty ... sorry our voodoo magic didn't work for you, @ktorn.

We've just got to find this Heisenbug and kill it!