Re: Crash on Linux+Clang (NSTimer)

[David Chisnall]

On 11/11/2020 23:26, Riccardo Mottola wrote:
> It improves things definitely. Now gui apps start again.

Great!

> Here the test-suite results:
>
> 76% tests passed, 44 tests failed out of 186
>
> That's exactly the same number as before and the tests still fail, even 
> if in "real world" things improved? That's mysterious.

I thought we tested 32-bit in CI, but it turns out we test only 32-bit 
Windows: for FreeBSD and Linux, we test only 64-bit x86.  For another 
project, we've set up some container thingies to use QEMU user mode for 
testing other architectures - I'll see if I can set that up for libobjc2 
so that we can test ARM as well.  32-bit builds ought to be easy anyway 
just by adding -m32 to various flags.

> I tried starting Ink and more complex GWorkspace, Gorm, GNUMail, they 
> all come up, load bundles, etc. So I think it is better than before and 
> branched.
>
>          Start 125: objc_msgSend
> 125/186 Test #125: objc_msgSend 
> ......................................Child aborted***Exception: 0.00 sec
>          Start 126: objc_msgSend_optimised
> 126/186 Test #126: objc_msgSend_optimised 
> ............................Child aborted***Exception:   0.00 sec
>          Start 127: objc_msgSend_legacy
> 127/186 Test #127: objc_msgSend_legacy 
> ...............................Child aborted***Exception:   0.00 sec
>          Start 128: objc_msgSend_legacy_optimised
> 128/186 Test #128: objc_msgSend_legacy_optimised 
> .....................Child aborted***Exception:   0.00 sec
>
>
> How can I give you more details on these (and the other) failures? there 
> are quite a lot.

Most of the tests run in a matrix of 4 configurations: debug / release 
builds, v1 and v2 ABIs, so it looks like 11 real failures.  I'll do a 
32-bit build locally and take a look.  It's a bit surprising

> I don't know what differs from your setup, mine should be pretty 
> "standard" in my intentions.
>
> ccmake . shows I am using clang:
>
>   CMAKE_CXX_COMPILER               /usr/lib/llvm/10/bin/clang++

This should work fine, I probably have some bugs.

David