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digitalmars.D.bugs - [Issue 11392] New: dirEntries segfaults (fails in 2.064 beta 4, works in 2.063.2)

reply d-bugmail puremagic.com writes:
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



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:

D3std4file15DirIteratorImpl4nextMFZb + 297, stop reason = EXC_BAD_ACCESS
(code=1, address=0x0)

297

D3std4file15DirIteratorImpl6stepInMFAyaZb + 159

D3std4file15DirIteratorImpl6__ctorMFNcAyaE3std4file8SpanModebZS3std4file15DirIteratorImpl
+ 127

D3std4conv66__T7emplaceTS3std4file15DirIteratorImplTAyaTE3std4file8SpanModeTbZ7emplaceFPS3std4file15DirIteratorImplKAyaKE3std4file8SpanModeKbZPS3std4file15DirIteratorImpl
+ 70

D3std8typecons86__T10RefCountedTS3std4file15DirIteratorImplVE3std8typecons24RefCountedAutoInitialize0Z10RefCounted15RefCountedStore42__T10initializeTAyaTE3std4file8SpanModeTbZ10initializeMFKAyaKE3std4file8SpanModeKbZv
+ 128

D3std8typecons86__T10RefCountedTS3std4file15DirIteratorImplVE3std8typecons24RefCountedAutoInitialize0Z10RefCounted37__T6__ctorTAyaTE3std4file8SpanModeTbZ6__ctorMFNcKAyaKE3std4file8SpanModeKbZS3std8typecons86__T10RefCountedTS3std4file15DirIteratorImplVE3std8typecons24RefCountedAutoInitialize0Z10RefCounted
+ 17

D3std4file11DirIterator6__ctorMFNcAyaE3std4file8SpanModebZS3std4file11DirIterator
+ 50

D3std4file10dirEntriesFAyaE3std4file8SpanModebZS3std4file11DirIterator + 57

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next sibling parent d-bugmail puremagic.com writes:
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monarchdodra gmail.com changed:

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



I was not able to reproduce on linux64, on any of beta 1, 3 or 4.

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I was not able to reproduce on win32 either.

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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



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



22:36:59 PDT ---
I can confirm this seg faults on OSX, 64 bits only.

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 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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 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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04:40:09 PDT ---


 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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23:57:47 PDT ---
https://github.com/D-Programming-Language/dmd/pull/2704

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00:05:19 PDT ---
https://github.com/D-Programming-Language/phobos/pull/1680

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Commits pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/fe9a3537ea2d208f3d5e37f6a2ea6e50f00aadd2
fix Issue 11392 - dirEntries segfaults

https://github.com/D-Programming-Language/phobos/commit/2a0d3d63954ed31d585708a41394e46115f9007d


fix Issue 11392 - dirEntries segfaults

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Commit pushed to 2.064 at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/3fe0703932d7b2486ec838045dd76322f1b54026


fix Issue 11392 - dirEntries segfaults

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Walter Bright <bugzilla digitalmars.com> changed:

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



11:18:40 PST ---
This was fixed by:

https://github.com/D-Programming-Language/dmd/pull/2701

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