• d-bugmail puremagic.com Jan 26 2010

d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=3743

           Summary: Forward reference problem with static if statements
           Product: D
           Version: 1.055
          Platform: All
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: adam.chrapkowski gmail.com


--- Comment #0 from Adam Chrapkowski <adam.chrapkowski gmail.com> 2010-01-26
13:31:37 PST ---
Forward reference fails when declaration is inside static if statement.

example:
//------------------------------------------------
const FOO_VER = 2;

static if(FOO_VER >= 2) // If Bar is defined
struct Bar {            // Foo should be defined too.
  Foo foo;
}

static if(FOO_VER >= 1)
struct Foo {
}
//------------------------------------------------

error: identifier 'Foo' is not defined 
error: 'Foo' is used as a type
error: variable 'main.Bar.foo' voids have no value

The problem occurs for structures and classes, but not for functions:

The following work correctly:
//------------------------------------------------
static if(FOO_VER >= 2)
class Bar {
  this(){ func(); };
}

static if(FOO_VER >= 1)
void func(){ }
//------------------------------------------------
static if(FOO_VER >= 2)
void func(){ Foo foo; }

static if(FOO_VER >= 1)
struct Foo {
}

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