[Bug 784705] Re: i386 version of gcc-4.5 fails to compile C or Fortran files on CIFS mounts

[Launchpad Bug Tracker]

** Branch linked: lp:debian/gcc-4.5

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to gcc-4.5 in Ubuntu.
https://bugs.launchpad.net/bugs/784705

Title:
  i386 version of gcc-4.5 fails to compile C or Fortran files on CIFS
  mounts

Status in The GNU Compiler Collection:
  Fix Released
Status in “gcc-4.5” package in Ubuntu:
  New

Bug description:
  A user of us ran into this on his locally managed Ubuntu Natty i386
  machine and I could reproduce it as follows:

  auriga:~# mkdir /mnt/tmp
  auriga:~# mount.cifs -o user=abe,rw,mand,uid=abe,gid=isg //unixdata/isg /mnt/tmp
  Password:
  auriga:~# su - abe
  U !514 Z1 ?0 L1 abe at auriga:pts/8 (-su) 16:42:32 [~] > cd /mnt/tmp/cifs-test
  U !515 Z2 ?0 L1 abe at auriga:pts/8 (-su) 16:42:41 [/mnt/tmp/cifs-test] > ls -l
  total 12
  -rwxr-xr-x 0 abe isg   25 2011-05-18 16:30 test.c*
  U !516 Z3 ?0 L1 abe at auriga:pts/8 (-su) 16:42:48 [/mnt/tmp/cifs-test] > cat test.c
  int main() {
          return 0;
  }
  U !517 Z4 ?0 L1 abe at auriga:pts/8 (-su) 16:42:51 [/mnt/tmp/cifs-test] > gcc -o test test.c
  cc1: fatal error: test.c: Value too large for defined data type
  compilation terminated.
  U !518 Z5 ?1 L1 abe at auriga:pts/8 (-su) 16:43:00 [/mnt/tmp/cifs-test] > touch foo.f
  U !519 Z6 ?0 L1 abe at auriga:pts/8 (-su) 16:43:51 [/mnt/tmp/cifs-test] > gfortran foo.f
  Error: Can't open file 'foo.f'
  <built-in>:0:0: fatal error: can't open input file: foo.f
  compilation terminated.
  U !520 Z7 ?1 L1 abe at auriga:pts/8 (-su) 16:56:49 [/mnt/tmp/cifs-test] > lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu 11.04
  Release:        11.04
  Codename:       natty
  U !521 Z8 ?0 L1 abe at auriga:pts/8 (-su) 16:58:01 [/mnt/tmp/cifs-test] > COLUMNS=80 dpkg -l cifs-utils gcc-4.5
  Desired=Unknown/Install/Remove/Purge/Hold
  | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
  |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
  ||/ Name           Version        Description
  +++-==============-==============-============================================
  ii  cifs-utils     2:4.5-2        Common Internet File System utilities
  ii  gcc-4.5        4.5.2-8ubuntu4 The GNU C compiler
  U !522 Z9 ?0 L1 abe at auriga:pts/8 (-su) 16:58:33 [/mnt/tmp/cifs-test] > uname -a
  Linux auriga 2.6.38-8-generic-pae #42-Ubuntu SMP Mon Apr 11 05:17:09 UTC 2011 i686 i686 i386 GNU/Linux
  U !523 Z10 ?0 L1 abe at auriga:pts/8 (-su) 16:59:02 [/mnt/tmp/cifs-test] >

  On unixdata runs a Samba server on Debian Lenny (2:3.2.5-4lenny14)

  This is also reproducible on Debian Sid/Squeeze with gcc-4.1 through
  gcc-4.5 (but not the default gcc-4.6) on i386. cifs-utils is at
  version 2:4.9-1 there. I'll file according bug reports there later,
  too, and will reference them here.

  (The mount options "mand" or "rw" aren't relevant, also happens with
  "nomand" or "ro".)

  This is not reproducible in the following cases:

  * with Ubuntu Natty amd64 (so it seems to be architecture-dependent)
  * with Ubuntu Maverick amd64 and gcc-4.4 (probably because of amd64, not because of gcc-4.4)
  * with Debian Sid i386 and gcc-4.6
  * if I copy the files (e.g. with rsync -a) from the CIFS mounted file system to /tmp and compile them there
  * if I use NFS instead of a CIFS mount
  * if I use sshfs instead of a CIFS mount (this is also the current workaround we recommended our user as he can't do NFS mounts)

  I couldn't check it on Lucid as mount.cifs bails out with "Mounting
  the DFS root for domain not implemented yet". And I don't have a
  Maverick box around.

  I suspect the issue to be either in gcc-4.5 or cifs-utils, but I'm not
  sure in which of them.

To manage notifications about this bug go to:
https://bugs.launchpad.net/gcc/+bug/784705/+subscriptions