go-qml is broken under Go 1.6

[vially]

Running the gopher example fails with: panic: runtime error: cgo argument has Go pointer to Go pointer.

Most probably this has to do with the cgo changes present in Go 1.6

[nbgo]

Panic can be suppressed by setting the environment variable GODEBUG=cgocheck=0

[SjB]

I've been able to put some time into this issue. You can go check commit at 826359a.

I've been able to compile and run the customtype example.

I'll be cleaning thing up and adding some more testing.

[SjB]

More progress today:

Refactor: connectedFunction, TypeSpec, and valueFold all to support cgo Go pointer issue.

I was able to compile and run the gopher example.

latest commit at 0309d2d

[immesys]

Any chance of getting this merged in?

[immesys]

@SjB do you think your changes have addressed all the problems? This is a blocking issue for me

[amlwwalker]

@vially The answer to this problem is documented at the bottom of this readme. Its an easy fix: https://golog.co/blog/article/Using_Go_with_QML_part_1

[immesys]

@amlwwalker that is not a "fix", that simply disables the check...

[SjB]

@immesys I was able to run all the example except for snapweb. But the error with that example is a very different issue.

[immesys]

@SjB today I encountered some problems with your fix. From qml I call a go function which returns a go type. If I then try pass that go type to another go function (inside qml) it panics with "cannot find fold go reference". The same access pattern works fine without the fix and cgocheck=0.

Apart from that, everything has been working fine. Do you think this issue can be fixed?

[SjB]

@immesys can you send me some codes that would replicated this error.

[binary132]

Would love to see this fixed. Any ETA @SjB / @immesys? Can we get the example? @immesys, perhaps this is related to the new cgo rules?

(e.g. don't pass Go-allocated pointers to memory containing other Go-allocated pointers through C functions)

[immesys]

Hi, sorry @SjB, @binary132 I did not make a reproducer earlier, I've been pretty busy. Here it is:

https://github.com/immesys/go-qml-fix-problem