http://d.puremagic.com/issues/show_bug.cgi?id=3046

           Summary: Segfault with C++ static variable
           Product: D
           Version: 2.030
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla@digitalmars.com
        ReportedBy: rsinfu@gmail.com


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');
--------------------

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Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |clugdbug@yahoo.com.au




--- Comment #1 from Don <clugdbug@yahoo.com.au>  2009-06-02 17:24:03 PDT ---
I can't reproduce this. It works for me on Windows. Is it Linux only, or is something missing from the test case?

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--- Comment #2 from Shin Fujishiro <rsinfu@gmail.com>  2009-06-02 17:39:07 PDT ---
(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.

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Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


--- Comment #3 from Don <clugdbug@yahoo.com.au> 2010-08-11 05:57:15 PDT ---
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');

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla@digitalmars.com
         Resolution|                            |FIXED


--- Comment #4 from Walter Bright <bugzilla@digitalmars.com> 2010-08-28 15:09:43 PDT ---
http://www.dsource.org/projects/dmd/changeset/647

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