test_auto
../libs/safe_numerics/test/test_auto.cpp:59:24: warning: 'r1' may be used uninitialized [-Wmaybe-uninitialized]
../libs/safe_numerics/test/test_auto.cpp:76:24: warning: 'r1' may be used uninitialized [-Wmaybe-uninitialized]
test_checked_less_than
../libs/safe_numerics/test/test_checked_less_than.cpp:94:10: warning: variable 'x' set but not used [-Wunused-but-set-variable]
test_range
../libs/safe_numerics/test/test_range.cpp:69:27: warning: variable 'zi' set but not used [-Wunused-but-set-variable]