[Bug 842998] Re: Ubuntu 64-bit g++ dirent.d_type incorrect value
Soren Hansen
soren at linux2go.dk
Tue Sep 6 19:27:11 UTC 2011
Reassigning to ubuntu/gcc-4.4
** Project changed: swift => gcc-4.4 (Ubuntu)
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https://bugs.launchpad.net/bugs/842998
Title:
Ubuntu 64-bit g++ dirent.d_type incorrect value
Status in “gcc-4.4” package in Ubuntu:
New
Bug description:
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 at 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 at 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 at 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 at stebasxu0434:~/tmp/traversing_folders_linux/DirA$ cd ..
epawszy at 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 at 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 at 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 at stebasxu0434:~/tmp/traversing_folders_linux$ cd -
/user/epawszy/tmp/traversing_folders_linux/DirA
epawszy at 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 ==
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