http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56722
Bug #: 56722 Summary: C++11: syntax error in for loop ends in SEGV Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: akim.demai...@gmail.com Probably because of Boost.Foreach, I had a comma instead of a colon to separate the iteration variable from the range. GCC did not like that. $ cat segv.cc int main() { for (const auto& i, 21) i; } $ g++-mp-4.8 -Wall -std=c++11 segv.cc segv.cc: In function 'int main()': segv.cc:3:20: internal compiler error: Segmentation fault: 11 for (const auto& i, 21) ^ segv.cc:3:20: internal compiler error: Abort trap: 6 g++-mp-4.8: internal compiler error: Abort trap: 6 (program cc1plus) zsh: abort g++-mp-4.8 -Wall -std=c++11 segv.cc $ g++-mp-4.8 --version g++-mp-4.8 (MacPorts gcc48 4.8-20130321_0) 4.8.0 20130321 (prerelease) Copyright (C) 2013 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.