http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48211
--- Comment #2 from Neuron Teckid <neuront at bitfoc dot us> 2011-03-21 13:01:38 UTC --- I have reproduced this problem on Ubuntu (in a virtualbox guest), also GCC 4.7.0 experimental: $ uname -a Linux GCC4 2.6.35-27-generic #48-Ubuntu SMP Tue Feb 22 20:25:29 UTC 2011 i686 GNU/Linux $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/i686-pc-linux-gnu/4.7.0/lto-wrapper Target: i686-pc-linux-gnu Configured with: ./configure --enable-languages=c,c++ Thread model: posix gcc version 4.7.0 20110321 (experimental) (GCC) $ g++ crash.cpp -std=c++0x In file included from /usr/local/lib/gcc/i686-pc-linux-gnu/4.7.0/../../../../include/c++/4.7.0/memory:85:0, from crash.cpp:2: /usr/local/lib/gcc/i686-pc-linux-gnu/4.7.0/../../../../include/c++/4.7.0/bits/unique_ptr.h: In instantiation of ‘constexpr std::unique_ptr<_Tp, _Dp>::unique_ptr() [with _Tp = acceptor_of_pack, _Dp = std::default_delete<acceptor_of_pack>]’: crash.cpp:5:8: instantiated from ‘sptr<acceptor_of_pack>’ crash.cpp:27:30: instantiated from here /usr/local/lib/gcc/i686-pc-linux-gnu/4.7.0/../../../../include/c++/4.7.0/bits/unique_ptr.h:115:59: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. where crash.cpp is /* BEGIN */ #include <list> #include <memory> template <typename _RawType> struct sptr : public std::unique_ptr<_RawType> { sptr() = default; }; struct stmt_base; std::list<sptr<stmt_base>> move(std::list<sptr<stmt_base>>&& rhs) { return std::move(rhs); } sptr<int> _last_else_pos; sptr<stmt_base const> _predicate; struct acceptor; sptr<acceptor> acccc; std::list<sptr<acceptor>> _acceptors; struct acceptor_of_pack; sptr<acceptor_of_pack> const _packer; #include <sstream> /* END */