File: CatchTest.java

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import org.checkerframework.common.aliasing.qual.Unique;

class CatchTest {

    void foo() {
        @Unique Exception exVar = new Exception();
        try {
            // :: error: (unique.leaked)
            throw exVar;

            // :: error: (exception.parameter.invalid)
        } catch (@Unique Exception e) {
            // exVar and e points to the same object, therefore catch clauses
            // are not allowed to have a @Unique parameter.
        }
    }
}