http://d.puremagic.com/issues/show_bug.cgi?id=6892

           Summary: Formatted write with specified length of enum member
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody@puremagic.com
        ReportedBy: bearophile_hugs@eml.cc


--- Comment #0 from bearophile_hugs@eml.cc 2011-11-05 04:04:51 PDT ---
import std.stdio, std.traits;
enum Foo { A };
void main() {
    writefln(">%12s<", "A");
    Foo[] foos = [EnumMembers!Foo];
    writefln(">%12s<", foos[0]);
}


Output dmd 2.057head:

>           A<
>A<


Expected output:

>           A<
>           A<

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Ali Cehreli <acehreli@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |acehreli@yahoo.com


--- Comment #1 from Ali Cehreli <acehreli@yahoo.com> 2012-02-27 22:45:48 PST ---
The following must be another manifestation of the same bug:

import std.stdio;

void main()
{
    enum E { e0 }

    foreach (format; [ "%s", "%d", "%u", "%3.7g", "%x", "%b" ]) {
        writefln(format, E.e0);
    }
}

Outputs:

e0
e0
e0
e0
e0
e0

Ali

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Kenji Hara <k.hara.pg@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull


--- Comment #2 from Kenji Hara <k.hara.pg@gmail.com> 2012-02-28 17:12:09 PST ---
https://github.com/D-Programming-Language/phobos/pull/465

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--- Comment #3 from github-bugzilla@puremagic.com 2012-03-01 09:20:32 PST ---
Commit pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/b5256c57f64fa823ca8ba200d343674d6556c75c Merge pull request #465 from 9rnsr/fix6892

Issue 6892 - Formatted write with specified length of enum member

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--- Comment #4 from github-bugzilla@puremagic.com 2012-03-08 22:54:49 PST ---
Commit pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/12571977d821a2e7e7a799012baea3e8f73dee0d fix Issue 6892 - Formatted write with specified length of enum member

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SomeDude <lovelydear@mailmetrash.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lovelydear@mailmetrash.com


--- Comment #5 from SomeDude <lovelydear@mailmetrash.com> 2012-04-20 17:12:03 PDT ---
On 2.059 Win32, the original test passes but the test of comment 1 throws an exception:

PS E:\DigitalMars\dmd2\samples> rdmd bug.d
e0
0
0
std.format.FormatException@E:\DigitalMars\dmd2\windows\bin\..\..\src\phobos\std\format.d(1178):
integral

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--- Comment #6 from Ali Cehreli <acehreli@yahoo.com> 2012-04-20 18:55:09 PDT ---
The problem at comment 5 can be reduced to this:

import std.stdio;

void main()
{
    writefln("%f", 42); // COMPILATION ERROR
}

It looks like an integral cannot be matched to a floating point format specifier. (The same problem with "%g", etc.)

I have mixed feelings about this. Although 42 is definitely not a floating point type, it is implicitly converted to one according to language rules.

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--- Comment #7 from Kenji Hara <k.hara.pg@gmail.com> 2012-04-22 17:55:41 PDT ---
(In reply to comment #6)
> The problem at comment 5 can be reduced to this:
> 
> import std.stdio;
> 
> void main()
> {
>     writefln("%f", 42); // COMPILATION ERROR
> }
> 
> It looks like an integral cannot be matched to a floating point format specifier. (The same problem with "%g", etc.)
> 
> I have mixed feelings about this. Although 42 is definitely not a floating point type, it is implicitly converted to one according to language rules.

This is not allowed in current std.format implementation.

Original issue was already fixed, so I'll close this issue. If you think integer value should be formatted with "%f", please open new enhancement request.

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Kenji Hara <k.hara.pg@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


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