[Issue 6132] New: extern (C) Silently Ignored Within D Classes

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=6132

           Summary: extern (C) Silently Ignored Within D Classes
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: sherouse at email.virginia.edu


--- Comment #0 from Braxton Sherouse <sherouse at email.virginia.edu> 2011-06-09 09:17:03 PDT ---
Overview:

I'm running DMD32 v2.053 on Mac OS X 10.6.7 and found the following
inconsistency in name mangling:

====
extern(C) int clock(); // is mangled to _clock

class Sprocket {
  extern(C) int clock(); // is mangled to __D4test8Sprocket5clockMUZi:
}
====

Expected Results:

The compiler should either:
1) mangle the declaration according to the C conventions by cause of the
"extern (C)", or:
2) emit a compilation error because C doesn't have classes.

Actual Results:

The declaration is silently compiled according to the D conventions.

Additional Information:

While either solution would be welcomed, I'm working in context where solution
1 would save a lot of effort; I'm generating language/library bindings at
compile time through the use of template metaprogramming. The code builds a
(more robust) interface in D, and is just using the extern (C) to declare C
functions that will later be linked in from other libraries.

Maybe it would be possible for the compiler to allow this syntax when there is
no function body, but fail when there is??


Many thanks!
-braxton

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