Ubuntu 64-bit g++ dirent.d_type incorrect value

Ubuntu version:
2.6.32-24-generic #43-Ubuntu SMP Thu Sep 16 14:58:24 UTC 2010 x86_64 GNU/Linux

g++ version:
(Ubuntu 4.4.3-4ubuntu5) 4.4.3

How to reproduce the problem:

- create a new folder, copy attached *.cpp file, compile using g++
- create 2 sub-folders, create a file (e.g. x.cpp) in each sub-folder
- copy compiled a.out to one of the sub-folders, change dir to this sub-folder
- execute: ./a.out .. .cpp
-> Result (FAILURE): the second sub-folder is NOT scanned (folder found by readdir(), but dirent.d_type = 0 when additional printf debug applied, see laso detailed log below)
- execute shell cmd: ls -alR ..
- execute: ./a.out .. .cpp
-> Result (OK): the second folder is scanned

The problem may be related to: https://lists.ubuntu.com/archives/foundations-bugs/2011-May/000176.html
I don't have access to the latest 64-bit ubuntu to chack if the problem was fixed.

Problem not observed if another method is used to check id readdir() result is a directory (sys/stat.h, lstat() function, S_ISDIR(buf.st_mode) always returns the correct result)

------------ log ---------------
epawszy@stebasxu0434:~/tmp/traversing_folders_linux/DirA$ ./a.out
Current folder:
/user/epawszy/tmp/traversing_folders_linux/DirA
Working folder:
/user/epawszy/tmp/traversing_folders_linux
DBG: pItem->d_type = 0
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/a.out
DBG: pItem->d_type = 0
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/traversing_folders_stack_linux.cpp
DBG: pItem->d_type = 4
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/DirA
DBG: pItem->d_type = 0
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/__orig_traversing_folders_stack_linux.cpp
DBG: pItem->d_type = 0
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/__log.txt
DBG: pItem->d_type = 0
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/DirB
DBG: pItem->d_type = 8
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/DirA/a.out
DBG: pItem->d_type = 0
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/DirA/a.cpp
/user/epawszy/tmp/traversing_folders_linux/traversing_folders_stack_linux.cpp
/user/epawszy/tmp/traversing_folders_linux/__orig_traversing_folders_stack_linux.cpp
/user/epawszy/tmp/traversing_folders_linux/DirA/a.cpp
Found 3 files
All words count 868
Unique words count 260
Top 20 words:
   70 <<
   35 }
   35 {
   33 =
   22 endl;
   22 cout
   20 #include
   16 "
   14 )
   12 if
   12 (
   10 int
   10 string
   10 !=
    8 const
    8 for
    8 folder
    8 );
    7 pos
    7 ==
epawszy@stebasxu0434:~/tmp/traversing_folders_linux/DirA$ ls -al
total 112
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:28 .
drwxr-xr-x 4 epawszy eml-users 4096 2011-09-06 11:27 ..
-rw-r--r-- 1 epawszy eml-users 38 2011-09-06 11:19 a.cpp
-rwxr-xr-x 1 epawszy eml-users 99840 2011-09-06 11:28 a.out
epawszy@stebasxu0434:~/tmp/traversing_folders_linux/DirA$ ls -al ..
total 144
drwxr-xr-x 4 epawszy eml-users 4096 2011-09-06 11:27 .
drwxr-xr-x 33 epawszy eml-users 4096 2011-09-05 13:22 ..
-rwxr-xr-x 1 epawszy eml-users 99840 2011-09-06 11:27 a.out
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:28 DirA
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:20 DirB
-rw-r--r-- 1 epawszy eml-users 13756 2011-09-06 11:09 __log.txt
-rw-r--r-- 1 epawszy eml-users 3683 2011-09-06 10:32 __orig_traversing_folders_stack_linux.cpp
-rwxr--r-- 1 epawszy eml-users 3754 2011-09-06 11:27 traversing_folders_stack_linux.cpp
epawszy@stebasxu0434:~/tmp/traversing_folders_linux/DirA$ cd ..
epawszy@stebasxu0434:~/tmp/traversing_folders_linux$ ls -al
total 144
drwxr-xr-x 4 epawszy eml-users 4096 2011-09-06 11:27 .
drwxr-xr-x 33 epawszy eml-users 4096 2011-09-05 13:22 ..
-rwxr-xr-x 1 epawszy eml-users 99840 2011-09-06 11:27 a.out
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:28 DirA
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:20 DirB
-rw-r--r-- 1 epawszy eml-users 13756 2011-09-06 11:09 __log.txt
-rw-r--r-- 1 epawszy eml-users 3683 2011-09-06 10:32 __orig_traversing_folders_stack_linux.cpp
-rwxr--r-- 1 epawszy eml-users 3754 2011-09-06 11:27 traversing_folders_stack_linux.cpp
epawszy@stebasxu0434:~/tmp/traversing_folders_linux$ ls -al Dir*
DirA:
total 112
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:28 .
drwxr-xr-x 4 epawszy eml-users 4096 2011-09-06 11:27 ..
-rw-r--r-- 1 epawszy eml-users 38 2011-09-06 11:19 a.cpp
-rwxr-xr-x 1 epawszy eml-users 99840 2011-09-06 11:28 a.out

DirB:
total 8
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:20 .
drwxr-xr-x 4 epawszy eml-users 4096 2011-09-06 11:27 ..
-rw-r--r-- 1 epawszy eml-users 41 2011-09-06 11:20 b.cpp
epawszy@stebasxu0434:~/tmp/traversing_folders_linux$ ls -alR
.:
total 144
drwxr-xr-x 4 epawszy eml-users 4096 2011-09-06 11:27 .
drwxr-xr-x 33 epawszy eml-users 4096 2011-09-05 13:22 ..
-rwxr-xr-x 1 epawszy eml-users 99840 2011-09-06 11:27 a.out
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:28 DirA
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:20 DirB
-rw-r--r-- 1 epawszy eml-users 13756 2011-09-06 11:09 __log.txt
-rw-r--r-- 1 epawszy eml-users 3683 2011-09-06 10:32 __orig_traversing_folders_stack_linux.cpp
-rwxr--r-- 1 epawszy eml-users 3754 2011-09-06 11:27 traversing_folders_stack_linux.cpp

./DirA:
total 112
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:28 .
drwxr-xr-x 4 epawszy eml-users 4096 2011-09-06 11:27 ..
-rw-r--r-- 1 epawszy eml-users 38 2011-09-06 11:19 a.cpp
-rwxr-xr-x 1 epawszy eml-users 99840 2011-09-06 11:28 a.out

./DirB:
total 8
drwxr-xr-x 2 epawszy eml-users 4096 2011-09-06 11:20 .
drwxr-xr-x 4 epawszy eml-users 4096 2011-09-06 11:27 ..
-rw-r--r-- 1 epawszy eml-users 41 2011-09-06 11:20 b.cpp
epawszy@stebasxu0434:~/tmp/traversing_folders_linux$ cd -
/user/epawszy/tmp/traversing_folders_linux/DirA
epawszy@stebasxu0434:~/tmp/traversing_folders_linux/DirA$ ./a.out
Current folder:
/user/epawszy/tmp/traversing_folders_linux/DirA
Working folder:
/user/epawszy/tmp/traversing_folders_linux
DBG: pItem->d_type = 8
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/a.out
DBG: pItem->d_type = 8
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/traversing_folders_stack_linux.cpp
DBG: pItem->d_type = 4
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/DirA
DBG: pItem->d_type = 8
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/__orig_traversing_folders_stack_linux.cpp
DBG: pItem->d_type = 8
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/__log.txt
DBG: pItem->d_type = 4
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/DirB
DBG: pItem->d_type = 8
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/DirB/b.cpp
DBG: pItem->d_type = 8
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/DirA/a.out
DBG: pItem->d_type = 8
DBG: dirEntryName = /user/epawszy/tmp/traversing_folders_linux/DirA/a.cpp
/user/epawszy/tmp/traversing_folders_linux/traversing_folders_stack_linux.cpp
/user/epawszy/tmp/traversing_folders_linux/__orig_traversing_folders_stack_linux.cpp
/user/epawszy/tmp/traversing_folders_linux/DirB/b.cpp
/user/epawszy/tmp/traversing_folders_linux/DirA/a.cpp
Found 4 files
All words count 879
Unique words count 263
Top 20 words:
   70 <<
   36 }
   36 {
   34 =
   22 endl;
   22 cout
   20 #include
   16 "
   14 )
   12 (
   12 int
   12 if
   10 string
   10 !=
    8 folder
    8 const
    8 for
    8 );
    7 pos
    7 ==