[Bug 690194] Re: /usr/lib/gcc/x86_64-linux-gnu/4.5/lto1 crashes with segmentation fault when both -fopenmp and -flto are used

[Matthias Klose]

please could you recheck this with gcc-4.6 (in an oneiric chroot)

** Also affects: gcc-4.6 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: gcc-4.6 (Ubuntu)
       Status: New => Incomplete

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Title:
  /usr/lib/gcc/x86_64-linux-gnu/4.5/lto1 crashes with segmentation fault
  when both -fopenmp and -flto are used

Status in “gcc-4.5” package in Ubuntu:
  New
Status in “gcc-4.6” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: gcc-4.5

  $ lsb_release -rd
  Description:    Ubuntu 10.10
  Release:        10.10

  $ LC_ALL=C apt-cache policy gcc-4.5
  gcc-4.5:
    Installed: 4.5.1-7ubuntu2
    Candidate: 4.5.1-7ubuntu2
    Version table:
   *** 4.5.1-7ubuntu2 0
          500 http://ua.archive.ubuntu.com/ubuntu/ maverick/main amd64 Packages
          100 /var/lib/dpkg/status

  Test file will be attached.

  $ gcc-4.5 test.c -o test -O1 -fopenmp -flto -std=c99
  lto1: internal compiler error: Segmentation fault
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <file:///usr/share/doc/gcc-4.5/README.Bugs> for instructions.
  lto-wrapper: /usr/bin/gcc-4.5.real returned 1 exit status
  collect2: lto-wrapper returned 1 exit status

  The bug does not happen with -O0, or when either -flto or -fopenmp is
  not used

  Despite 'ulimit -c unlimited', core file is not generated.
  --- 
  Architecture: amd64
  DistroRelease: Ubuntu 10.10
  NonfreeKernelModules: fglrx
  Package: gcc-4.5 4.5.1-7ubuntu2
  PackageArchitecture: amd64
  ProcEnviron:
   LANGUAGE=ru_RU:ru
   LANG=ru_RU.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.35-23.41-server 2.6.35.7
  Tags: maverick
  Uname: Linux 2.6.35-23-server x86_64
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers

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