class AdLint::Exam::CBuiltin::W0723
Public Class Methods
new(phase_ctxt)
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Calls superclass method
AdLint::Examination::new
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 17547 def initialize(phase_ctxt) super @interp = phase_ctxt[:cc1_interpreter] @interp.on_multiplicative_expr_evaled += T(:check) @interp.on_additive_expr_evaled += T(:check) end
Private Instance Methods
check(expr, lhs_var, rhs_var, rslt_var)
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# File lib/adlint/exam/c_builtin/cc1_check.rb, line 17555 def check(expr, lhs_var, rhs_var, rslt_var) return unless lhs_var.type.scalar? && lhs_var.type.signed? return unless rhs_var.type.scalar? && rhs_var.type.signed? return unless lhs_var.value.scalar? && rhs_var.value.scalar? case expr.operator.type when "+" unbound_val = lhs_var.value + rhs_var.value when "-" unbound_val = lhs_var.value - rhs_var.value when "*" unbound_val = lhs_var.value * rhs_var.value else return end lower_test = unbound_val < scalar_value_of(rslt_var.type.min) upper_test = unbound_val > scalar_value_of(rslt_var.type.max) if !lower_test.test_must_be_true.true? && lower_test.test_may_be_true.true? or !upper_test.test_must_be_true.true? && upper_test.test_may_be_true.true? W(expr.location) end end
interpreter()
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# File lib/adlint/exam/c_builtin/cc1_check.rb, line 17583 def interpreter @interp end