------- Comment #31 from burnus at gcc dot gnu dot org 2007-06-24 19:45 ------- > -fwarpv is not recognized by g95. Try: -fwrapv
"This option instructs the compiler to assume that signed arithmetic overflow of addition, subtraction and multiplication wraps around using twos-complement representation. This flag enables some optimizations and disables others." -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32393
