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Re: Crash occurs when catching std::exception in Objective-C++ code comp

From: Wolfgang Lux
Subject: Re: Crash occurs when catching std::exception in Objective-C++ code compiled with clang on Linux and using libobjc2
Date: Wed, 22 Nov 2017 17:37:21 +0100

> Am 22.11.2017 um 16:46 schrieb Lobron, David <address@hidden>:
>>> checking for objc_setUncaughtExceptionHandler() in runtime... no
>>> Does this mean that libobjc2 does not support the uncaught exception 
>>> handler code?  I'm wondering if this is a clue as to why my code crashes, 
>>> whereas the libobjc2 tests are OK.
>> Okay, that probably accounts for the issues that you’re seeing.  I don’t 
>> really understand the GNUstep-base build system, but it looks as if it’s 
>> picking up the gcc runtime (do you have that installed somehow?  If so, 
>> please delete it!) and falling back to using setjmp/longjmp exceptions.
> Thank you for the help, David.  Yes, I do indeed have the gcc runtime 
> installed:
> (ALSI8)address@hidden:/usr/lib/gcc/i686-linux-gnu/4.8$ ls libobjc*
> libobjc.a  libobjc_gc.a  libobjc_gc.so  libobjc.so
> Unfortunately, it's pre-installed on the machines where I have to do my 
> build, and I can't remove it.  I will see if I can find a way to tell 
> gnustep-base to use libobjc2 and ignore the gcc runtime.

I think the correct place to look at is gnustep-make rather than gnustep-base. 
If you configure gnustep-make with clang as compiler it should be ignoring the 
gcc runtime files.


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