File: FlowCompoundConcatenation.java

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checker-framework-java 3.2.0%2Bds-3
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class FlowCompoundConcatenation {
    static String getNonNullString() {
        return "";
    }

    public static void testCompoundAssignWithNullAndMethodCall() {
        String s = null;
        s += getNonNullString();
        s.toString();
    }

    public static void testCompoundAssignWithNull() {
        String s = null;
        s += "hello";
        s.toString();
    }
}