3046 – Segfault with C++ static variable (Linux only)

The compiler segfaults compiling this invalid code:
--------------------
class C
{
extern(C++):
 static int var; // C++ variable should be error
}
--------------------
The segfault happend in cpp_mangle_name() (cppmangle.c):
--------------------
	FuncDeclaration *fd = s->isFuncDeclaration();
	if (fd->isConst()) <-- HERE
	 buf->writeByte('K');
--------------------

I can't reproduce this. It works for me on Windows. Is it Linux only, or is something missing from the test case?

(In reply to comment #1)
> I can't reproduce this. It works for me on Windows. Is it Linux only, or is
> something missing from the test case?
It's Linux only. On Linux, C++ name mangling is done by the front end. The front end assumes that extern(C++) is applied only to a function, and segfaults when extern(C++) is applied to a static variable.
On Windows, C++ name mangling is done by the backend, which can deal with C++ variable name mangling.

Patch: cpp_mangle.c, cpp_mangle_name(), line 112.
 FuncDeclaration *fd = s->isFuncDeclaration();
+ if (!fd)
+ {
+ s->error("cannot be declared as extern(C++)");
+ return;
+ }
 if (fd->isConst())
 buf->writeByte('K');

http://www.dsource.org/projects/dmd/changeset/647