https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67487
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |trippels at gcc dot gnu.org --- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- Most likely a local issue (gmp). What CPU are you using? What is the illegal instruction? Please run: gdb --args /cm/local/apps/gcc/5.1.0/libexec/gcc/x86_64-unknown-linux-gnu/5.1.0/cc1plus -fpreprocessed hello.ii -quiet -dumpbase hello.cpp -mtune=generic -march=x86-64 -auxbase hello -std=c++11 -version -o hello.s and post the backtrace and disassembly.