[Mono-bugs] [Bug 478652] UnixDirectoryInfo.Delete() won't throw an exception for non-existent directory

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https://bugzilla.novell.com/show_bug.cgi?id=478652

User jpryor at novell.com added comment
https://bugzilla.novell.com/show_bug.cgi?id=478652#c1


Jonathan Pryor <jpryor at novell.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO
                 CC|                            |jpryor at novell.com
      Info Provider|                            |flz at xbsd.org




--- Comment #1 from Jonathan Pryor <jpryor at novell.com>  2009-02-23 07:32:59 MST ---
I can't reproduce:

mono n478652.exe 

Unhandled Exception: System.IO.FileNotFoundException: No such file or directory
---> Mono.Unix.UnixIOException: No such file or directory [ENOENT].
  at Mono.Unix.UnixMarshal.ThrowExceptionForLastError () [0x00000] 
  at Mono.Unix.UnixDirectoryInfo.GetEntries () [0x00000] 
  at Mono.Unix.UnixDirectoryInfo.GetFileSystemEntries () [0x00000] 
  at Mono.Unix.UnixDirectoryInfo.Delete (Boolean recursive) [0x00000] 
  at TestDelete.Main () [0x00000] 

This is for both Mono 2.0 and mono 2.5 (trunk r127307).

>From the look of the stack trace, it's crashing while trying to call into
MonoPosixHelper.

The questions are:

1. What distro and Mono version is this under?
2. What exception (if any) is being thrown?  If it's a DllNotFoundException,
then MonoPosixHelper isn't being found (odd).  If it's just dying for no
particular reason, this could be a bug within
MonoPosixHelper:Mono_Posix_Syscall_strerror_r() (in mono/support/errno.c).

If possible, could you build MonoPosixHelper with debug symbols, run mono
within gdb, and get a backtrace when it crashes (assuming it's dying from a
SIGSEGV):

$ gdb `which mono`
(gdb) r your-app.exe
..  program crashes
(gdb) bt

Note that this will require debug symbols for MonoPosixHelper to be useful.

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