[Issue 14954] New: extern opaque struct instance doesn't compile

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14954

          Issue ID: 14954
           Summary: extern opaque struct instance doesn't compile
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: john.loughran.colvin at gmail.com

Let's say I have some C headers that have code like this in:

extern struct UndeclaredStruct blah;
UndeclaredStruct *p = &blah;

which would naïvely translate to D as:

struct UndeclaredStruct;
extern(C) __gshared extern UndeclaredStruct blah;
__gshared auto p = &blah;

which doesn't compile:
Error: variable opaque.blah no definition of struct UndeclaredStruct

--