Supported Mutation Operators

Operator Name	Operator Semantics
cxx_add_assign_to_sub_assign	Replaces += with -=
cxx_add_to_sub	Replaces + with -
cxx_and_assign_to_or_assign	Replaces &= with |=
cxx_and_to_or	Replaces & with |
cxx_assign_const	Replaces ‘a = b’ with ‘a = 42’
cxx_bitwise_not_to_noop	Replaces ~x with x
cxx_bitwise_rshift_assign_to_lshift_assign	Replaces >>= with <<=
cxx_div_assign_to_mul_assign	Replaces /= with *=
cxx_div_to_mul	Replaces / with *
cxx_eq_to_ne	Replaces == with !=
cxx_ge_to_gt	Replaces >= with >
cxx_ge_to_lt	Replaces >= with <
cxx_gt_to_ge	Replaces > with >=
cxx_gt_to_le	Replaces > with <=
cxx_init_const	Replaces ‘T a = b’ with ‘T a = 42’
cxx_le_to_gt	Replaces <= with >
cxx_le_to_lt	Replaces <= with <
cxx_logical_and_to_or	Replaces && with ||
cxx_logical_or_to_and	Replaces || with &&
cxx_lshift_assign_to_rshift_assign	Replaces <<= with >>=
cxx_lshift_to_rshift	Replaces << with >>
cxx_lt_to_ge	Replaces < with >=
cxx_lt_to_le	Replaces < with <=
cxx_minus_to_noop	Replaces -x with x
cxx_mul_assign_to_div_assign	Replaces *= with /=
cxx_mul_to_div	Replaces * with /
cxx_ne_to_eq	Replaces != with ==
cxx_or_assign_to_and_assign	Replaces |= with &=
cxx_or_to_and	Replaces | with &
cxx_post_dec_to_post_inc	Replaces x– with x++
cxx_post_inc_to_post_dec	Replaces x++ with x–
cxx_pre_dec_to_pre_inc	Replaces –x with ++x
cxx_pre_inc_to_pre_dec	Replaces ++x with –x
cxx_rem_assign_to_div_assign	Replaces %= with /=
cxx_rem_to_div	Replaces % with /
cxx_rshift_to_lshift	Replaces << with >>
cxx_sub_assign_to_add_assign	Replaces -= with +=
cxx_sub_to_add	Replaces - with +
cxx_xor_assign_to_or_assign	Replaces ^= with |=
cxx_xor_to_or	Replaces ^ with |
negate_mutator	Negates conditionals !x to x and x to !x
remove_void_function_mutator	Removes calls to a function returning void
replace_call_mutator	Replaces call to a function with 42
scalar_value_mutator	Replaces zeros with 42, and non-zeros with 0