CodeQL library for C#
codeql/csharp-all 0.4.4 (changelog, source)
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Predicate defaultNullConversion

Holds if fromType is NullType, and toType is a type that can represent the null value, such as a reference type, Nullable<T> or a type parameter with constraints that restrict it to a reference type.

Import path

import semmle.code.csharp.Conversion
predicate defaultNullConversion(Type fromType, Type toType)