Re: [Mingw-users] g++ 4.2.1 with shared libstdc++ not catching exceptions

[David E. <dav...@al...>]

Danny Smith wrote:
>   
>> -----Original Message-----
>> From: min...@li... 
>> [mailto:min...@li...] On Behalf 
>> Of David Ergo
>> Sent: Friday, 24 August 2007 8:02 p.m.
>> To: min...@li...
>> Subject: [Mingw-users] g++ 4.2.1 with shared libstdc++ not 
>> catching exceptions
>>
>>
>> It seems that exceptions are not catched by g++ 4.2.1 when using the
>> shared library version of libstdc++.
>>
>> Here is a small test case:
>>
>> $ cat testcase_exception.cpp
>> #include <stdexcept>
>> #include <stdio.h>
>>
>> int main()
>> {
>>   try {
>>     throw std::runtime_error("hello, world");
>>   } catch (const std::runtime_error &re) {
>>     fprintf(stderr, "%s\n", re.what());
>>   }
>>
>>   return 0;
>> }
>>
>>
>>     
>
> Try g++-sjlj -shared-libgcc testcase_exception.cpp -lstdc++_s 
> I don't know how to force -shared-libgcc when linking against a shared
> libstdc++, but it is generally required  
> I'll  expand the release notes 
>   
$ g++-sjlj -shared-libgcc testcase_exception.cpp -lstdc++_s
/mingw/lib/gcc/mingw32/../../../mingw32/bin/ld.exe: cannot find -lgcc_s
collect2: ld returned 1 exit status

$ find gcc421/ -name 'libgcc*'
gcc421/bin/libgcc_sjlj_1.dll
gcc421/lib/gcc/mingw32/4.2.1-sjlj/libgcc.a

It seems that the libgcc_s.a import library is missing.

David

-- 
David Ergo
Chief Software Engineer

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