http://d.puremagic.com/issues/show_bug.cgi?id=2221

           Summary: Bug with typeof(*this) in template struct
           Product: D
           Version: 1.032
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla@digitalmars.com
        ReportedBy: wbaxter@gmail.com


Here's the code:
-----
struct Struct(T)
{
    static if (is(typeof(T.nan))) {
        static const is_fptype = true;
    }
    else {
        static const is_fptype = false;
    }


    static if(typeof(*this).is_fptype)
    //static if((typeof(*this)).is_fptype) //<- fixes it
    {
        pragma(msg, "T is " ~ T.stringof);
        pragma(msg, typeof(*this).stringof ~ " is fp type");
    }
    else {
        pragma(msg, "T is " ~ T.stringof);
        pragma(msg, typeof(*this).stringof ~ " is NOT fp type");
    }

}

alias Struct!(float) Sf;

alias Struct!(int) Si;

-------

From compiling that I get the output:
"""
T is float
Struct!(float) is fp type
T is int
Struct!(float) is fp type
"""





The output expected is:
"""
T is float
Struct!(float) is fp type
T is int
Struct!(int) is NOT fp type
"""

And that is the output you get if you stick extra parentheses around
(typeof(*this)).

This was tested on D1.033.

Possibly related to:
* http://d.puremagic.com/issues/show_bug.cgi?id=2219
* http://d.puremagic.com/issues/show_bug.cgi?id=2154


-- 

http://d.puremagic.com/issues/show_bug.cgi?id=2221


braddr@puremagic.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|1.032                       |1.033




------- Comment #1 from braddr@puremagic.com  2008-07-12 12:33 -------
Added 1.033 to the list of versions and updated the bug to reference it.


-- 

http://d.puremagic.com/issues/show_bug.cgi?id=2221


korslund@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         OS/Version|Windows                     |All




------- Comment #2 from korslund@gmail.com  2008-11-04 03:30 -------
Also possibly related to: http://d.puremagic.com/issues/show_bug.cgi?id=2359

The various typeof(this) bugs seems appear in 1.032 and onward, and not be present in 1.031 and earlier. The changelog for 1.032 lists several items relating to typeof, so it's reasonable to assume that one of the fixes introduced this bug.


-- 

http://d.puremagic.com/issues/show_bug.cgi?id=2221


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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |clugdbug@yahoo.com.au
         Resolution|                            |FIXED




--- Comment #3 from Don <clugdbug@yahoo.com.au>  2009-09-04 03:07:29 PDT ---
This was fixed in 1.039/2.023, but not listed in the changelog. (it's the same root cause as bug 2527).

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