Re: FreeBSD / libobj2 issue after update - all apps crash

[David Chisnall]

On 04/06/2019 04:14, Riccardo Mottola wrote:
> Hi,
>
> I just upgraded all binary packages on FreeBSD  using clang and packaged
> libobjc2:
>
> 11.2-RELEASE-p10 FreeBSD 11.2-RELEASE-p10 #0: Mon May 13 21:20:50 UTC 2019
>
> installed libobjc2 is:
> libobjc2-2.0_1                 Replacement Objective-C runtime
> supporting modern Objective-C features
>
>
> I removed and reocmpiled all gnustep core, however all programs crash.
> Actually, GUI programs appear to crash. I can launch plarse, plmerge...
>
>
> The error I get is:
>
>
> Assertion failed: (l->size >= sizeof(struct
> objc_protocol_method_description)), function protocol_method_at_index,
> file /wrkdirs/usr/ports/lang/libobjc2/work/libobjc2-0db500a/protocol.h,
> line 85.
> Abort (core dumped)
>
> any idea if the issue is a borken package in FreeBSD with clang or
> libobjc2.. or the issue is in GNUstep?
>
> Riccardo
>
> PS: I will run tests and see what happens

Thanks for the report.  Please can you file an issue on GitHub?  This is a 
quite surprising error - it implies that either clang has a bug or that 
something is trying to manually create or modify protocols without calling 
through the runtime.  This might happen if you have a version of GNUstep 
compiled against the gcc runtime and using ObjectiveC2.framework instead of the 
runtime's public APIs, but that shouldn't be the case with the packaged 
versions.

I have seen something odd with the FreeBSD package builder machines though.  
When I tried installing gnustep from them, I saw -gui compiled with the 1.8 
ABI, but everything else compiled with the 2.0 ABI, which caused everything 
other than plmerge to fail to start with a linker error.  I couldn't reproduce 
it building locally though.

David