http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52464
Bug #: 52464 Summary: When I compile my source codes with -O3 option, the compiler fails. This does not occur if I use -O2 Classification: Unclassified Product: gcc Version: 4.5.3 Status: UNCONFIRMED Severity: blocker Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: b...@cs.wisc.edu I attached my software package in the attachment. You just need to type "make rsem-parse-alignments" to trigger the bug. Thanks! $ g++ -v -save-temps -Wall -O3 -ffast-math -c -I. parseIt.cpp Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-pc-cygwin/4.5.3/lto-wrapper.exe Target: i686-pc-cygwin Configured with: /gnu/gcc/releases/respins/4.5.3-3/gcc4-4.5.3-3/src/gcc-4.5.3/configure --srcdir=/gnu/gcc/releases/respins/4.5.3-3/gcc4-4.5.3-3/src/gcc-4.5.3 --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/lib --datadir=/usr/share --localstatedir=/var --sysconfdir=/etc --datarootdir=/usr/share --docdir=/usr/share/doc/gcc4 -C --datadir=/usr/share --infodir=/usr/share/info --mandir=/usr/share/man -v --with-gmp=/usr --with-mpfr=/usr --enable-bootstrap --enable-version-specific-runtime-libs --libexecdir=/usr/lib --enable-static --enable-shared --enable-shared-libgcc --disable-__cxa_atexit --with-gnu-ld --with-gnu-as --with-dwarf2 --disable-sjlj-exceptions --enable-languages=ada,c,c++,fortran,java,lto,objc,obj-c++ --enable-graphite --enable-lto --enable-java-awt=gtk --disable-symvers --enable-libjava --program-suffix=-4 --enable-libgomp --enable-libssp --enable-libada --enable-threads=posix --with-arch=i686 --with-tune=generic --enable-libgcj-sublibs CC=gcc-4 CXX=g++-4 CC_FOR_TARGET=gcc-4 CXX_FOR_TARGET=g++-4 GNATMAKE_FOR_TARGET=gnatmake GNATBIND_FOR_TARGET=gnatbind --with-ecj-jar=/usr/share/java/ecj.jar Thread model: posix gcc version 4.5.3 (GCC) COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-O3' '-ffast-math' '-c' '-I.' '-shared-libgcc' '-mtune=generic' '-march=i686' /usr/lib/gcc/i686-pc-cygwin/4.5.3/cc1plus.exe -E -quiet -v -I. -D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix -idirafter /usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../../include/w32api -idirafter /usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../../i686-pc-cygwin/lib/../../include/w32api parseIt.cpp -mtune=generic -march=i686 -Wall -ffast-math -O3 -fpch-preprocess -o parseIt.ii ignoring nonexistent directory "/usr/local/include" ignoring nonexistent directory "/usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../../i686-pc-cygwin/include" ignoring duplicate directory "/usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../../i686-pc-cygwin/lib/../../include/w32api" #include "..." search starts here: #include <...> search starts here: . /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/c++ /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/c++/i686-pc-cygwin /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/c++/backward /usr/lib/gcc/i686-pc-cygwin/4.5.3/include /usr/lib/gcc/i686-pc-cygwin/4.5.3/include-fixed /usr/include /usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../../include/w32api End of search list. COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-O3' '-ffast-math' '-c' '-I.' '-shared-libgcc' '-mtune=generic' '-march=i686' /usr/lib/gcc/i686-pc-cygwin/4.5.3/cc1plus.exe -fpreprocessed parseIt.ii -quiet -dumpbase parseIt.cpp -mtune=generic -march=i686 -auxbase parseIt -O3 -Wall -version -ffast-math -o parseIt.s GNU C++ (GCC) version 4.5.3 (i686-pc-cygwin) compiled by GNU C version 4.5.3, GMP version 4.3.2, MPFR version 3.0.1-p4, MPC version 0.8 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C++ (GCC) version 4.5.3 (i686-pc-cygwin) compiled by GNU C version 4.5.3, GMP version 4.3.2, MPFR version 3.0.1-p4, MPC version 0.8 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 2eb50487139b9f2ceb9af473175cad84 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.