class AdLint::Exam::CBuiltin::W0741

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 18071
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, rslt_var) click to toggle source
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 18078
def check(expr, lhs_var, rhs_var, rslt_var)
  return unless expr.operator.type == "*"

  return unless constant_expression?(expr.lhs_operand)
  return unless constant_expression?(expr.rhs_operand)

  return unless lhs_var.type.scalar? && lhs_var.type.unsigned?
  return unless rhs_var.type.scalar? && rhs_var.type.unsigned?

  return unless lhs_var.value.scalar? && rhs_var.value.scalar?

  unbound_val = lhs_var.value * rhs_var.value
  upper_test = unbound_val > scalar_value_of(rslt_var.type.max)

  W(expr.location) if upper_test.test_must_be_true.true?
end
interpreter() click to toggle source
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 18095
def interpreter
  @interp
end