class AdLint::Exam::CBuiltin::W0115

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 2989
def initialize(phase_ctxt)
  super
  @interp = phase_ctxt[:cc1_interpreter]
  @interp.on_shift_expr_evaled += T(:check)
end

Private Instance Methods

check(shift_expr, lhs_var, rhs_var, *) click to toggle source
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 2996
def check(shift_expr, lhs_var, rhs_var, *)
  op = shift_expr.operator.type
  return unless op == "<<" || op == "<<="

  if lhs_var.type.unsigned?
    lhs_limit = scalar_value_of(lhs_var.type.max) >> rhs_var.value
    test = lhs_var.value.test_must_be_greater_than(lhs_limit)
    if test.true?
      W(shift_expr.location,
        *test.evidence.emit_context_messages(self, shift_expr.location))
    end
  end
end
interpreter() click to toggle source
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 3010
def interpreter
  @interp
end