It may be a duplicate of 31899. Compiling Boost lambda library test control_structures.cpp with -g results in "internal compiler error: in reference_to_unused, at dwarf2out.c:10010". Without -g, it compiles cleanly. This is on HP-UX ia64 with gcc 4.2.1
How to reproduce: download Boost 1.34.1 and run x.sh below with BOOST_BUILD_PATH env. variable pointing to the Boost tree. As of this writing, the problem is also reproducible with sources from Boost SVN trunk x.sh ---- #!/bin/sh -x export BOOST_BUILD_PATH="/proj/acxx/borisg/boost-v27/regression" cd $BOOST_BUILD_PATH/boost/libs g++ -g -c -I.. ../libs/lambda/test/control_structures.cpp Snapshot: --------- bash-2.03$ uname -a HP-UX hpadl901 B.11.23 U ia64 2728209989 unlimited-user license bash-2.03$ g++ --version g++ (GCC) 4.2.1 Copyright (C) 2007 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. bash-2.03$ x.sh + export BOOST_BUILD_PATH=/proj/acxx/borisg/boost-v27/regression + cd /proj/acxx/borisg/boost-v27/regression/boost/libs + g++ -g -c -I.. ../libs/lambda/test/control_structures.cpp ../libs/lambda/test/control_structures.cpp:27: internal compiler error: in reference_to_unused, at dwarf2out.c:10010 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. bash-2.03$ cat x.sh #!/bin/sh -x export BOOST_BUILD_PATH="/proj/acxx/borisg/boost-v27/regression" cd $BOOST_BUILD_PATH/boost/libs g++ -g -c -I.. ../libs/lambda/test/control_structures.cpp bash-2.03$ -- Summary: ICE with -g on legal code: Boost lambda library test control_structures.cpp Product: gcc Version: 4.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: boris dot gubenko at hp dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33580
