CodeQL library for Java/Kotlin
codeql/java-all 0.8.9 (changelog, source)
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Predicate TypeFlowBounds::exprUnionTypeFlow

Holds if the runtime type of e is bounded by a union type and if this bound is likely to be better than the static type of e. The union type is made up of the types t related to e by this predicate, and the flag exact indicates whether t is an exact bound or merely an upper bound.

Import path

import semmle.code.java.dataflow.TypeFlow
predicate exprUnionTypeFlow(Expr e, RefType t, boolean exact)