digitalmars.D.bugs - [Issue 7476] New: Write(ln) functions no longer accept retro range
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http://d.puremagic.com/issues/show_bug.cgi?id=7476
Summary: Write(ln) functions no longer accept retro range
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: regression
Priority: P2
Component: Phobos
AssignedTo: nobody puremagic.com
ReportedBy: dmitry.olsh gmail.com
--- Comment #0 from Dmitry Olshansky <dmitry.olsh gmail.com> 2012-02-09
12:06:31 PST ---
import std.stdio, std.range;
void main()
{
write(retro("abcd"));
}
Dmd outputs:
std\range.d(295): Error: static assert "Cannot put a Result into a
LockingTextWriter"
std\format.d(1509): instantiated from here:
put!(LockingTextWriter,Result)
std\format.d(1984): instantiated from here:
formatRange!(LockingTextWriter,Result,char)
std\format.d(2228): instantiated from here:
formatValue!(LockingTextWriter,Result,char)
std\format.d(319): instantiated from here:
formatGeneric!(LockingTextWriter,Result,char)
std\stdio.d(684): instantiated from here:
formattedWrite!(LockingTextWriter,char,Result)
std\stdio.d(1503): instantiated from here: write!(Result)
retro.d(5): instantiated from here: write!(Result)
This worked on 2.057.
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d-bugmail puremagic.com
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Kevin <kevin brogan.ca> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kevin brogan.ca
--- Comment #1 from Kevin <kevin brogan.ca> 2012-02-10 00:34:41 PST ---
Works for me.
Windows 7 64bit - Service Pack 1
C:\Users\Kevin\Documents\D Projects\ConsoleApp1\ConsoleApp1\bin>where dmd
C:\D\dmd\windows\bin\dmd.exe
C:\D\dmd2\windows\bin\dmd.exe
C:\Users\Kevin\Documents\D
Projects\ConsoleApp1\ConsoleApp1\bin>C:\D\dmd2\windows\bin\dmd.exe ..\main.d
C:\Users\Kevin\Documents\D Projects\ConsoleApp1\ConsoleApp1\bin>main.exe
dcba
C:\Users\Kevin\Documents\D Projects\ConsoleApp1\ConsoleApp1\bin>type ..\main.d
import std.stdio, std.range;
void main()
{
write(retro("abcd"));
}
C:\Users\Kevin\Documents\D
Projects\ConsoleApp1\ConsoleApp1\bin>C:\D\dmd2\windows\bin\dmd.exe
DMD32 D Compiler v2.057
Copyright (c) 1999-2011 by Digital Mars written by Walter Bright
Documentation: http://www.digitalmars.com/d/2.0/index.html
Usage: --- truncate ---
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Feb 10 2012
http://d.puremagic.com/issues/show_bug.cgi?id=7476 --- Comment #2 from Kevin <kevin brogan.ca> 2012-02-10 00:38:30 PST --- Wait, I'm confused. You said it works on 2.057 (which I can confirm). What version is it not working on? 2.057 is the latest. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Feb 10 2012
http://d.puremagic.com/issues/show_bug.cgi?id=7476
Jonathan M Davis <jmdavisProg gmx.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jmdavisProg gmx.com
--- Comment #3 from Jonathan M Davis <jmdavisProg gmx.com> 2012-02-10 00:43:32
PST ---
Wait, I'm confused. You said it works on 2.057 (which I can confirm). What
version is it not working on? 2.057 is the latest.
The latest on github (and the current 2.058 beta).
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http://d.puremagic.com/issues/show_bug.cgi?id=7476 --- Comment #4 from Kevin <kevin brogan.ca> 2012-02-10 02:00:32 PST --- Just downloaded the git source and compiled with dmc Works for me on latest version. 2.048 Beta c:\Users\Kevin\Documents\D Projects\ConsoleApp1\ConsoleApp1\bin>dmd ../main.d DMD v2.058 DEBUG c:\Users\Kevin\Documents\D Projects\ConsoleApp1\ConsoleApp1\bin>main.exe dcba c:\Users\Kevin\Documents\D Projects\ConsoleApp1\ConsoleApp1\bin> -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Feb 10 2012
http://d.puremagic.com/issues/show_bug.cgi?id=7476 --- Comment #5 from Kevin <kevin brogan.ca> 2012-02-10 02:04:28 PST --- I've got to stop typing at 2 in the morning... I mean 2.058 Debug, as shown in the console dump. (In reply to comment #4)Just downloaded the git source and compiled with dmc Works for me on latest version. 2.048 Beta-- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Feb 10 2012
http://d.puremagic.com/issues/show_bug.cgi?id=7476
timon.gehr gmx.ch changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |timon.gehr gmx.ch
--- Comment #6 from timon.gehr gmx.ch 2012-02-10 04:22:52 PST ---
I think it is a regression in Phobos. Have you compiled against Phobos 2.057 or
Phobos 2.058head?
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Feb 10 2012
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Kenji Hara <k.hara.pg gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|nobody puremagic.com |andrei metalanguage.com
--- Comment #7 from Kenji Hara <k.hara.pg gmail.com> 2012-02-10 04:55:04 PST ---
A shallow answer:
2.058 was merged a pull to improve std.format:
https://github.com/D-Programming-Language/phobos/pull/298
and after that this regression has been occurred.
A deep answer:
This is a problem rooted in the std.range.put implementation.
reduced code:
----
import std.range;
struct LockingTextWriter
{
void put(dchar c){}
}
struct RetroResult
{
bool end = false;
property bool empty() const { return end; }
property dchar front(){ return 'a'; }
void popFront(){ end = true; }
}
void main()
{
LockingTextWriter w;
RetroResult r;
put(w, r); // test.d(20)
}
Output:
----
C:\dmd2\src\phobos\std\range.d(295): Error: static assert "Cannot put a
RetroResult into a LockingTextWriter"
test.d(20): instantiated from here: put!(LockingTextWriter,RetroResult)
Current std.format.formatValue treats retro("abcd") as a kind of string range.
And try to put it into Writer by using std.range.put().
void put(R, E)(ref R r, E e) // std.range.put signature
When E is an array (of cause it is random access range), put() runs the
range-to-range copy. But put() cannot instantiate with E that isn't array
range.
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Kenji Hara <k.hara.pg gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |pull
--- Comment #8 from Kenji Hara <k.hara.pg gmail.com> 2012-02-10 05:08:10 PST ---
https://github.com/D-Programming-Language/phobos/pull/426
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Kenji Hara <k.hara.pg gmail.com> changed:
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CC| |simendsjo gmail.com
--- Comment #9 from Kenji Hara <k.hara.pg gmail.com> 2012-02-17 07:13:24 PST ---
*** Issue 7531 has been marked as a duplicate of this issue. ***
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Feb 17 2012
http://d.puremagic.com/issues/show_bug.cgi?id=7476 --- Comment #10 from github-bugzilla puremagic.com 2012-02-18 10:47:07 PST --- Commit pushed to master at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/3a03376c7d6b8b5b998aa5c3e0dfd9837e3198dc Merge pull request #426 from 9rnsr/fix7476 Issue 7476 - Write(ln) functions no longer accept retro range -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Feb 18 2012
http://d.puremagic.com/issues/show_bug.cgi?id=7476
Yao Gomez <yao.gomez gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |yao.gomez gmail.com
Resolution| |FIXED
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Kenji Hara <k.hara.pg gmail.com> changed:
What |Removed |Added
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CC| |bearophile_hugs eml.cc
--- Comment #11 from Kenji Hara <k.hara.pg gmail.com> 2012-02-18 22:43:55 PST
---
*** Issue 7433 has been marked as a duplicate of this issue. ***
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