http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52464
--- Comment #6 from bli at cs dot wisc.edu 2012-03-10 21:43:05 UTC --- Created attachment 26875 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26875 The attachment is the preprocessed file (*.i*) Sorry for not reading the rules carefully. The .ii file is attached. GCC version 4.5.3 System: cygwin, this bug also occurs in Linux Options and command line: g++ -save-temps -Wall -O3 -ffast-math -c -I. parseIt.cpp Compiler Output: In file included from parseIt.cpp:9:0: /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/c++/fstream: In constructor ‘std::basic_ofstream<_CharT, _Traits>::basic_ofstream(const char*, std::ios_base::openmode) [with _CharT = char, _Traits = std::char_traits<char>, std::ios_base::openmode = std::_Ios_Openmode]’: /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/c++/fstream:701:4: 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.