When you declare an extern(C) function inside a D function it seems to continue to use D's name mangling, which is unexpected for me. For instance:

    void main()
    {
        extern(C) void foo(int);
        foo(42);
    }

    Undefined symbols for architecture x86_64:
      "__D4test4mainFZv3fooUiZv", referenced from:
            __Dmain in test.o

Is this a bug?

On Tuesday, 10 September 2013 at 13:41:14 UTC, Luís Marques wrote:
> Is this a bug?

*bump*

On Friday, 13 September 2013 at 02:46:22 UTC, Luís Marques wrote:
> On Tuesday, 10 September 2013 at 13:41:14 UTC, Luís Marques wrote:
>> Is this a bug?
>
> *bump*

This is invalid in C, so not manglable. when you use extern C in this context, you mean calling convention.

On 9/10/13, <luis@luismarques.eu>"@puremagic.com <"\"Luís".Marques"> wrote:
> When you declare an extern(C) function inside a D function it seems to continue to use D's name mangling, which is unexpected for me. For instance:
>
>      void main()
>      {
>          extern(C) void foo(int);
>          foo(42);
>      }

I was going to suggest using pragma(mangle, "...") as a workaround (using a git-head compiler), but actually it won't work here because this pragma can only be used in module-scope. Apparently there's a difference between a pragma declaration and pragma statement, I'm not sure why we have this split.