Code:

y$ cat LambdaUnary.java
public class LambdaUnary {
    public static void main(String argv[]) {
        float f = 7;
        simp_float.method(~f);
    }

    interface SAM_float {
        int method (float arg);
    }

    static float f = 7;
    static SAM_float simp_float = (x) -> 7;
}

Java version:

$ javac -version
javac 1.9.0-ea

  Actual compilation result:

$ javac LambdaUnary.java
An exception has occurred in the compiler (1.9.0-ea). Please file a bug at the Java Bug Database (http://bugreport.java.com/bugreport/) after checking the database for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.NullPointerException
at com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitApply(Flow.java:1237)
at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1598)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:404)
at com.sun.tools.javac.tree.TreeScanner.visitExec(TreeScanner.java:178)
at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1416)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:404)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:57)
at com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitBlock(Flow.java:999)
at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:984)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:404)
at com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitMethodDef(Flow.java:966)
at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:836)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:404)
at com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitClassDef(Flow.java:929)
at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:744)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:404)
at com.sun.tools.javac.comp.Flow$FlowAnalyzer.analyzeTree(Flow.java:1325)
at com.sun.tools.javac.comp.Flow$FlowAnalyzer.analyzeTree(Flow.java:1315)
at com.sun.tools.javac.comp.Flow.analyzeTree(Flow.java:212)
at com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1297)
at com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1266)
at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:871)
at com.sun.tools.javac.main.Main.compile(Main.java:254)
at com.sun.tools.javac.main.Main.compile(Main.java:142)
at com.sun.tools.javac.Main.compile(Main.java:56)
at com.sun.tools.javac.Main.main(Main.java:42)

Expected result:

Have compiler.err.operator.cant.be.applied: ~, float, null error.

It's regression, java 8 works fine.