http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52661
--- Comment #3 from Jim Michaels <jmichae3 at yahoo dot com> 2012-03-22 06:13:33 UTC --- you are not paying attention to the issue. the issue is that this constant is causing a compiler warning when it should not, and the compiler is treating a valid signed constant as an unsigned integer. I recompiled with added -fno-strict-aliasing -fwrapv arguments and I got this message. it should NOT be unsigned! maxint64-bug.cpp:4:19: warning: integer constant is so large that it is unsigned [enabled by default] maxint64-bug.cpp:4:5: warning: this decimal constant is unsigned only in ISO C90 [enabled by default]