class AdLint::Exam::CBuiltin::W0093

Public Class Methods

new(phase_ctxt) click to toggle source
Calls superclass method AdLint::Examination::new
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 2087
def initialize(phase_ctxt)
  super
  @interp = phase_ctxt[:cc1_interpreter]
  @interp.on_multiplicative_expr_evaled += T(:check)
end

Private Instance Methods

check(expr, lhs_var, rhs_var, *) click to toggle source
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 2094
def check(expr, lhs_var, rhs_var, *)
  return if expr.operator.type == "*"
  return unless rhs_var.type.scalar? && rhs_var.value.scalar?

  unless constant_expression?(expr.rhs_operand)
    if rhs_var.value.test_must_be_equal_to(scalar_value_of(0)).false?
      test = rhs_var.value.test_may_be_equal_to(scalar_value_of(0))
      if test.true?
        W(expr.location,
          *test.evidence.emit_context_messages(self, expr.location))
      end
    end
  end
end
interpreter() click to toggle source
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 2109
def interpreter
  @interp
end