extern(C++) and shared

Jude Young 10equals2 at gmail.com
Sun Nov 27 03:23:09 PST 2011


On Sun 27 Nov 2011 05:02:09 AM CST, Jacob Carlborg wrote:
> On 2011-11-27 01:20, deadalnix wrote:
>> I have this function :
>> extern(C++) void* __dsfml_start_thread(EntryPoint entryPoint, void*
>> userData);
>>
>> If EntryPoint is defined as follow :
>> alias extern(C++) void* function(void*) EntryPoint;
>>
>> The function mangle in _Z20__dsfml_start_threadPFPvS_ES_
>>
>> if alias extern(C++) void* function(shared void*) EntryPoint;
>> _Z20__dsfml_start_threadPFPvPvES_
>>
>> Both demangle using c++filt in __dsfml_start_thread(void* (*)(void*),
>> void*), which is what is expected.
>>
>> But the definition without shared will be the only one to link
>> successfully.
>>
>> Is the mangling of shared types is consistent in C++ ? shared doesn't
>> exists in C++, so I guess we should expect the same mangling in both
>> cases. Unless it exists some magic on the C++ side that I'm not aware
>> of ?
>
> Have you tried with __gshared instead?
>

yeah, I've seen this. __gshared alias extern(C++) void* function(void*) 
EntryPoint   might work.
I've had TLS errors when it wasn't __gshared.


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