http://d.puremagic.com/issues/show_bug.cgi?id=6329

           Summary: Out of range exceptions not thrown in certain cases
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: andrej.mitrovich@gmail.com


--- Comment #0 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2011-07-15 16:43:59 PDT ---
import std.stdio;
import std.file;

void main()
{
    foreach (string entry; dirEntries(".", SpanMode.shallow))
    {
        writeln(entry[0..1000]);  // out of range
    }
}

DMD 2.053:
D:\>dmd test.d && test.exe
core.exception.RangeError@test(8): Range violation

DMD 2.054:
D:\>dmd test.d && test.exe
D:\>

Wheres the range error??

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6329


Vladimir Panteleev <thecybershadow@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |thecybershadow@gmail.com
         Resolution|                            |DUPLICATE


--- Comment #1 from Vladimir Panteleev <thecybershadow@gmail.com> 2011-07-21 16:29:13 PDT ---
As I posted on the newsgroup:

It sounds like standard crash dialogs are disabled on your system (or the problem somehow manifests differently for you). But the cause is the same.

*** This issue has been marked as a duplicate of issue 6308 ***

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6329



--- Comment #2 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2011-09-08 09:18:00 PDT ---
Created an attachment (id=1022)
Error messages

2.055 still prints out excessive error messages.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6329



--- Comment #3 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2011-09-08 09:19:09 PDT ---
(In reply to comment #2)
> Created an attachment (id=1022) [details]
> Error messages
> 
> 2.055 still prints out excessive error messages.

I'm sorry, not "still", this is new behavior.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6329



--- Comment #4 from Vladimir Panteleev <thecybershadow@gmail.com> 2011-09-08 09:23:06 PDT ---
It doesn't happen on my machine. Have you updated DMD/Phobos/Druntime properly?

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6329


Vladimir Panteleev <thecybershadow@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|DUPLICATE                   |


--- Comment #5 from Vladimir Panteleev <thecybershadow@gmail.com> 2011-09-08 09:24:23 PDT ---
Never mind, it only happens when you don't use -g.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6329



--- Comment #6 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2011-09-08 09:28:29 PDT ---
Typically I install DMD fresh to make sure I didn't screw something up while updating. I can confirm adding -g removes the access violations.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6329



--- Comment #7 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2011-10-12 16:35:00 PDT ---
Here's more issues, this time the sample tries to write to a file handle that was opened in read-only mode:

import std.stdio;
import std.file;

void main()
{
    foreach (string entry; dirEntries(".", SpanMode.shallow))
    {
        auto file = File(entry, "r");

        string[] lines;
        foreach (line; file.byLine)
        {
            lines ~= line.idup;
        }

        foreach (line; lines)
        {
            file.writeln("asdf");
        }
    }
}

$ dmd test.d && test.exe

Nothing is outputted. But with -g:

$ dmd -g test.d && test.exe
$
std.exception.ErrnoException@D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\stdio.d(1164):
 (No error)

So without the symbolic info I get nothing in stdout. However If I change the sample to this:

import std.stdio;
import std.file;

void main()
{
    foreach (string entry; dirEntries(".", SpanMode.shallow))
    {
        auto file = File(entry, "r");
        file.writeln("asdf");
    }
}

$ dmd test.d && test.exe
object.Error: Access Violation
..

and this error message will loop forever.

But with -g I only get one error message as it should be:
$ dmd -g test.d && test.exe
$
std.exception.ErrnoException@D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\stdio.d(1164):
 (No error)

So I'll just have to compile with -g all the time until this gets resolved.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6329


Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla@digitalmars.com
          Component|DMD                         |druntime


--- Comment #8 from Walter Bright <bugzilla@digitalmars.com> 2012-02-05 00:18:07 PST ---
This is a druntime issue.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------

http://d.puremagic.com/issues/show_bug.cgi?id=6329



--- Comment #9 from Walter Bright <bugzilla@digitalmars.com> 2012-03-03 20:21:31 PST ---
(In reply to comment #0)
> import std.stdio;
> import std.file;
> void main()
> {
>     foreach (string entry; dirEntries(".", SpanMode.shallow))
>     {
>         writeln(entry[0..1000]);  // out of range
>     }
> }
> DMD 2.053:
> D:\>dmd test.d && test.exe
> core.exception.RangeError@test(8): Range violation
> DMD 2.054:
> D:\>dmd test.d && test.exe
> D:\>
> Wheres the range error??

The range error is 'entry' is a string, and you are slicing it beyond it's end. This is not a bug in the compiler or runtime, it's in your code.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------