https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61493
--- Comment #3 from wmi at google dot com --- Fix a typo in the first post. $~/workarea/gcc-r211604/build/install/bin/g++ -O2 1.cxx $./a.out not equal $~/workarea/gcc-r211604/build/install/bin/g++ -O0 1.cxx $./a.out equal $~/workarea/gcc-r211604/build/install/bin/g++ -O2 -fno-devirtualize-speculatively 1.cxx $./a.out equal