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Fix false contract assumption encountered on System.Decimal.op_Explicit #203

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SergeyTeplyakov merged 1 commit into from
Aug 12, 2015
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Fix false contract assumption encountered on System.Decimal.op_Explicit #203

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25 changes: 24 additions & 1 deletion Microsoft.Research/ControlFlow/ControlFlow.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -8320,33 +8320,56 @@ public Result Call<TypeList, ArgList>(APC pc, Method method, bool tail, bool vir
// special case Decimal methods to operators
if (mdDecoder.Equal(declaringType, mdDecoder.System_Decimal))
{
Contract.Assume(args.Count >= 2);
switch (mdDecoder.Name(method))
{
case "op_Addition":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Add, dest, args[0], args[1], data);

case "op_Division":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Div, dest, args[0], args[1], data);

case "op_Equality":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Ceq, dest, args[0], args[1], data);

case "op_GreaterThan":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Cgt, dest, args[0], args[1], data);

case "op_GreaterThanOrEqual":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Cge, dest, args[0], args[1], data);

case "op_Inequality":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Cne_Un, dest, args[0], args[1], data);

case "op_LessThan":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Clt, dest, args[0], args[1], data);

case "op_LessThanOrEqual":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Cle, dest, args[0], args[1], data);

case "op_Modulus":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Rem, dest, args[0], args[1], data);

case "op_Multiply":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Mul, dest, args[0], args[1], data);

case "op_Subtraction":
Contract.Assume(args.Count >= 2);
return visitor.Binary(pc, BinaryOperator.Sub, dest, args[0], args[1], data);

case "op_UnaryNegation":
Contract.Assume(args.Count >= 1);
return visitor.Unary(pc, UnaryOperator.Neg, false, false, dest, args[0], data);

default:
break;
}
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