A question about C++ interop

YD diyu60607 at yahoo.com
Sun Mar 29 19:04:35 UTC 2020

On Sunday, 29 March 2020 at 17:32:59 UTC, kinke wrote:
> On Sunday, 29 March 2020 at 15:20:52 UTC, YD wrote:
>> So what do I need to declare in the D file for it to match the 
>> library entry? Thanks!
> This is similar to 
> https://issues.dlang.org/show_bug.cgi?id=19260, and can be 
> worked around the same way by messing manually with the mangled 
> name, if you can't adapt the C++ side. The actual problem is 
> that you can't express a mutable reference to a const class 
> object (as opposed to a struct) in D (`const Y` is a const 
> reference to a const Y object).
>> (This problem somehow does not appear on Linux where the 
>> library file is compiled with gcc, though)
> The Itanium C++ mangling doesn't differentiate between:
> void foo(const Y *);       // what you have on the C++ side
> void foo(const Y * const); // corresponds to D `void foo(const 
> Y)`

Thanks! I tried this:

     class X {
         version(Windows) {
             pragma(mangle, X.call.mangleof.replace("QBV","PBV"))
             final void call(const(Y)) const;
         } else {
             final void call(const(Y)) const;

and it worked. Thanks very much again!

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