I don't know if this is the same as the other ICEs in build_data_member_initialization, but it's at a different line number anyway...

Compiler version is:
g++ (Debian 20101128-1) 4.6.0 20101128 (experimental) [trunk revision 167220]

Here's the un-preprocessed source (preprocessed source attached):

  #include <string>
  #include <map>

  void f (const std::string &name, const std::string &val)
  {
    std::map<const std::string, std::string>::value_type (name, val);
  }


Compiled with:

  g++-snapshot -c -std=c++0x ,oink.cc


yields:

   In file included from /usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.6.0/../../../../include/c++/4.6.0/bits/stl_algobase.h:65:0,
		    from /usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.6.0/../../../../include/c++/4.6.0/bits/char_traits.h:41,
		    from /usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.6.0/../../../../include/c++/4.6.0/string:42,
		    from ,oink.cc:1:
   /usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.6.0/../../../../include/c++/4.6.0/bits/stl_pair.h: In constructor 'constexpr std::pair<_T1, _T2>::pair(const _T1&, const _T2&) [with _T1 = const std::basic_string<char>, _T2 = std::basic_string<char>]':
   ,oink.cc:6:66:   instantiated from here
   /usr/lib/gcc-snapshot/lib/gcc/x86_64-linux-gnu/4.6.0/../../../../include/c++/4.6.0/bits/stl_pair.h:102:35: internal compiler error: in build_data_member_initialization, at cp/semantics.c:5503
   Please submit a full bug report,
   with preprocessed source if appropriate.
   See <file:///usr/share/doc/gcc-snapshot/README.Bugs> for instructions.

Thanks,

-miles