[LLVMbugs] [Bug 18310] New: Clang fails with undefined reference to `_ZTIDn' when C++11 support is enabled

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18310

            Bug ID: 18310
           Summary: Clang fails with undefined reference to `_ZTIDn' when
                    C++11 support is enabled
           Product: clang
           Version: 3.3
          Hardware: PC
                OS: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: hongli at phusion.nl
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

I am trying to compile Phusion Passenger (www.phusionpassenger.org, git master
as found at https://github.com/phusion/passenger) on FreeBSD 10.0 with Clang
3.3. When -std=gnu++11 or -std=c++11 is given, Clang fails with the following
while linking the PassengerHelperAgent executable:

buildout/agents/PassengerHelperAgent.o: In function
`_ZNK5boost13function_base6targetIDnEEPKT_v':
/usr/local/lib/ruby/gems/1.9/gems/passenger-4.0.29/ext/boost/function/function_base.hpp:670:
undefined reference to `_ZTIDn'

Removing the -std=... flag makes the error go away.

This only appears to happen on FreeBSD. Compiling Phusion Passenger with
-std=gnu++11/c++11 on Mac OS X 10.9 with Apple Clang 5.0 (clang-500.2.79)
(based on LLVM 3.3svn) does not result in any linker errors.

Is this a problem in Clang or a problem in the Phusion Passenger code? Here are
the instructions for compiling Phusion Passenger.

1. Download the git master source code from Github.
2. Run ./bin/passenger-install-apache2-module. It will check for required
dependencies and run the build system and the compiler. Install any missing
dependencies it tells you about.
3. Watch Clang fail when linking PassengerHelperAgent.

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