http://d.puremagic.com/issues/show_bug.cgi?id=11392

           Summary: dirEntries segfaults (fails in 2.064 beta 4, works in
                    2.063.2)
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: Phobos
        AssignedTo: nobody@puremagic.com
        ReportedBy: thelastmammoth@gmail.com


--- Comment #0 from thelastmammoth@gmail.com 2013-10-30 17:57:09 PDT ---
Note: only tried on OSX

2.064 beta 4:
dmd -run main.d
--- killed by signal 11



2.063.2:works

---
import std.file;
void main(){
  auto dFiles = dirEntries(".",SpanMode.shallow);
  foreach(d; dFiles){}
}

---

running under lldb:
* thread #1: tid = 0x1c03, 0x000000010002b1d5 test2
D3std4file15DirIteratorImpl4nextMFZb + 297, stop reason = EXC_BAD_ACCESS
(code=1, address=0x0)
    frame #0: 0x000000010002b1d5 test2 D3std4file15DirIteratorImpl4nextMFZb +
297
    frame #1: 0x000000010002b08b test2
D3std4file15DirIteratorImpl6stepInMFAyaZb + 159
    frame #2: 0x000000010002b3b3 test2
D3std4file15DirIteratorImpl6__ctorMFNcAyaE3std4file8SpanModebZS3std4file15DirIteratorImpl
+ 127
    frame #3: 0x000000010002198e test2
D3std4conv66__T7emplaceTS3std4file15DirIteratorImplTAyaTE3std4file8SpanModeTbZ7emplaceFPS3std4file15DirIteratorImplKAyaKE3std4file8SpanModeKbZPS3std4file15DirIteratorImpl
+ 70
    frame #4: 0x00000001000390dc test2
D3std8typecons86__T10RefCountedTS3std4file15DirIteratorImplVE3std8typecons24RefCountedAutoInitialize0Z10RefCounted15RefCountedStore42__T10initializeTAyaTE3std4file8SpanModeTbZ10initializeMFKAyaKE3std4file8SpanModeKbZv
+ 128
    frame #5: 0x0000000100039051 test2
D3std8typecons86__T10RefCountedTS3std4file15DirIteratorImplVE3std8typecons24RefCountedAutoInitialize0Z10RefCounted37__T6__ctorTAyaTE3std4file8SpanModeTbZ6__ctorMFNcKAyaKE3std4file8SpanModeKbZS3std8typecons86__T10RefCountedTS3std4file15DirIteratorImplVE3std8typecons24RefCountedAutoInitialize0Z10RefCounted
+ 17
    frame #6: 0x000000010002c3e6 test2
D3std4file11DirIterator6__ctorMFNcAyaE3std4file8SpanModebZS3std4file11DirIterator
+ 50
    frame #7: 0x000000010002c825 test2
D3std4file10dirEntriesFAyaE3std4file8SpanModebZS3std4file11DirIterator + 57

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monarchdodra@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |monarchdodra@gmail.com


--- Comment #1 from monarchdodra@gmail.com 2013-10-31 02:00:09 PDT ---
I was not able to reproduce on linux64, on any of beta 1, 3 or 4.

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--- Comment #2 from monarchdodra@gmail.com 2013-10-31 02:09:43 PDT ---
I was not able to reproduce on win32 either.

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--- Comment #3 from thelastmammoth@gmail.com 2013-10-31 02:39:47 PDT ---
well that would explain why it would've gone un-noticed... can anyone verify on OSX?

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safety0ff.bugz <safety0ff.bugz@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |safety0ff.bugz@gmail.com


--- Comment #4 from safety0ff.bugz <safety0ff.bugz@gmail.com> 2013-10-31 03:31:28 PDT ---
Maybe my PR https://github.com/D-Programming-Language/phobos/pull/1657 changed
the test that might have caught it.
I looked at the reports which lead to those tests and the directory string did
not look relevant.

In retrospect, I should have used something like:
auto cwd = getcwd();
chdir(testdir);
scope(exit) chdir(cwd);

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla@digitalmars.com
           Platform|All                         |x86_64
         OS/Version|All                         |Mac OS X


--- Comment #5 from Walter Bright <bugzilla@digitalmars.com> 2013-10-31 22:36:59 PDT ---
I can confirm this seg faults on OSX, 64 bits only.

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--- Comment #6 from thelastmammoth@gmail.com 2013-11-01 01:37:47 PDT ---
(In reply to comment #5)
> I can confirm this seg faults on OSX, 64 bits only.

how come this kind of obvious bug (not due to any obscure usage condition, just on plain function usage) can go through the autotester unnoticed ? is that due to https://github.com/D-Programming-Language/phobos/pull/1657 ?

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--- Comment #7 from monarchdodra@gmail.com 2013-11-01 03:59:42 PDT ---
(In reply to comment #6)
> (In reply to comment #5)
> > I can confirm this seg faults on OSX, 64 bits only.
> 
> how come this kind of obvious bug (not due to any obscure usage condition, just on plain function usage) can go through the autotester unnoticed ? is that due to https://github.com/D-Programming-Language/phobos/pull/1657 ?

Only one way to find out: https://github.com/D-Programming-Language/phobos/pull/1677

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--- Comment #8 from safety0ff.bugz <safety0ff.bugz@gmail.com> 2013-11-01 04:40:09 PDT ---
(In reply to comment #7)
> Only one way to find out: https://github.com/D-Programming-Language/phobos/pull/1677

I just did the same, both test show that it would not have been caught with or without the changes to the test.

Anyways, as I stated before, in retrospect, I should have used:

auto cwd = getcwd();
chdir(testdir);
scope(exit) chdir(cwd);

and left the actual tests alone.

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--- Comment #9 from Walter Bright <bugzilla@digitalmars.com> 2013-11-01 23:57:47 PDT ---
https://github.com/D-Programming-Language/dmd/pull/2704

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