clang segfaults when compiling mpich

[Rob Latham]

1: Description: Ubuntu 14.04.2 LTS
Release: 14.04

2: clang-3.5:
  Installed: 1:3.5-4ubuntu2~trusty2
  Candidate: 1:3.5-4ubuntu2~trusty2
  Version table:
 *** 1:3.5-4ubuntu2~trusty2 0
        500 http://mirror.pnl.gov/ubuntu/ trusty-updates/universe amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ trusty-security/universe amd64 Packages
        100 /var/lib/dpkg/status
     1:3.5~svn201651-1ubuntu1 0
        500 http://mirror.pnl.gov/ubuntu/ trusty/universe amd64 Packages

3: clang should either compile the source code, or tell me why it could not do so

4: instead, clang segfaults and asks that I report this bug

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: clang-3.5 1:3.5-4ubuntu2~trusty2
ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
Uname: Linux 3.13.0-46-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Apr 2 16:32:16 2015
InstallationDate: Installed on 2012-06-28 (1008 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
SourcePackage: llvm-toolchain-snapshot
UpgradeStatus: Upgraded to trusty on 2014-03-31 (367 days ago)

[Rob Latham (rob-terizla)]

the preprocessed source code

[Matthias Klose (doko)]

please recheck with snapshots based on LLVM 20