A DESCRIPTION OF THE PROBLEM :
When I try to throw a non-exist exception in a lambda declared in a default or static method in the corresponding functional interface, whose functional method is declared `throws Throwable`, it crashes.

It also crashes when the interface has a type parameter `X extends Throwable` and the functional method is declared `throws X`.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Input the following code and do not define the `NotExist` class.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
It should output an error message that the symbol cannot be found.
ACTUAL -
It crashes with the following message:

Exception in thread "main" java.lang.InternalError: Exception during analyze - java.lang.AssertionError: isSubtype UNKNOWN
at jdk.jshell/jdk.jshell.TaskFactory$AnalyzeTask.analyze(TaskFactory.java:415)
at jdk.jshell/jdk.jshell.TaskFactory$AnalyzeTask.<init>(TaskFactory.java:406)
at jdk.jshell/jdk.jshell.TaskFactory.lambda$analyze$1(TaskFactory.java:178)
at jdk.jshell/jdk.jshell.TaskFactory.lambda$runTask$4(TaskFactory.java:213)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskPool.getTask(JavacTaskPool.java:193)
at jdk.jshell/jdk.jshell.TaskFactory.runTask(TaskFactory.java:206)
at jdk.jshell/jdk.jshell.TaskFactory.analyze(TaskFactory.java:175)
at jdk.jshell/jdk.jshell.TaskFactory.analyze(TaskFactory.java:161)
at jdk.jshell/jdk.jshell.Eval.lambda$compileAndLoad$23(Eval.java:1066)
at jdk.jshell/jdk.jshell.TaskFactory.lambda$runTask$4(TaskFactory.java:213)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskPool.getTask(JavacTaskPool.java:193)
at jdk.jshell/jdk.jshell.TaskFactory.runTask(TaskFactory.java:206)
at jdk.jshell/jdk.jshell.TaskFactory.analyze(TaskFactory.java:175)
at jdk.jshell/jdk.jshell.TaskFactory.analyze(TaskFactory.java:161)
at jdk.jshell/jdk.jshell.Eval.compileAndLoad(Eval.java:1060)
at jdk.jshell/jdk.jshell.Eval.declare(Eval.java:893)
at jdk.jshell/jdk.jshell.Eval.eval(Eval.java:140)
at jdk.jshell/jdk.jshell.JShell.eval(JShell.java:493)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.processSource(JShellTool.java:3624)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.processSourceCatchingReset(JShellTool.java:1348)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.processInput(JShellTool.java:1246)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.run(JShellTool.java:1217)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.start(JShellTool.java:1001)
at jdk.jshell/jdk.internal.jshell.tool.JShellToolBuilder.start(JShellToolBuilder.java:261)
at jdk.jshell/jdk.internal.jshell.tool.JShellToolProvider.main(JShellToolProvider.java:120)
Caused by: java.lang.IllegalStateException: java.lang.AssertionError: isSubtype UNKNOWN
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:383)
at jdk.jshell/jdk.jshell.TaskFactory$AnalyzeTask.analyze(TaskFactory.java:412)
... 24 more
Caused by: java.lang.AssertionError: isSubtype UNKNOWN
at jdk.compiler/com.sun.tools.javac.code.Types$4.visitType(Types.java:1133)
at jdk.compiler/com.sun.tools.javac.code.Types$4.visitType(Types.java:1110)
at jdk.compiler/com.sun.tools.javac.code.Type.accept(Type.java:228)
at jdk.compiler/com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4906)
at jdk.compiler/com.sun.tools.javac.code.Types.isSubtype(Types.java:1106)
at jdk.compiler/com.sun.tools.javac.code.Types.isSubtype(Types.java:1077)
at jdk.compiler/com.sun.tools.javac.comp.Check.subset(Check.java:1583)
at jdk.compiler/com.sun.tools.javac.comp.Check.isHandled(Check.java:1681)
at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.markThrown(Flow.java:1164)
at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitThrow(Flow.java:1568)
at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCThrow.accept(JCTree.java:1736)
at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at jdk.compiler/com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:447)
at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:57)
at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitBlock(Flow.java:1325)
at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1082)
at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at jdk.compiler/com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:447)
at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitMethodDef(Flow.java:1291)
at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:912)
at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at jdk.compiler/com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:447)
at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitClassDef(Flow.java:1254)
at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:810)
at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at jdk.compiler/com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:447)
at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.visitClassDef(Flow.java:1199)
at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:810)
at jdk.compiler/com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
at jdk.compiler/com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:447)
at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.analyzeTree(Flow.java:1669)
at jdk.compiler/com.sun.tools.javac.comp.Flow$FlowAnalyzer.analyzeTree(Flow.java:1659)
at jdk.compiler/com.sun.tools.javac.comp.Flow.analyzeTree(Flow.java:225)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1377)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1341)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:404)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$analyze$1(JavacTaskImpl.java:379)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.invocationHelper(JavacTaskImpl.java:152)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.analyze(JavacTaskImpl.java:379)
... 25 more


---------- BEGIN SOURCE ----------
// Case A
@FunctionalInterface
interface RunnableWithThrowable {
    void run() throws Throwable;

    // You can also replace `static` with `default` and test again
    static RunnableWithThrowable getInstance() {
        return () -> { throw new NotExist(); };
    }
}

// Case B
@FunctionalInterface
interface RunnableWithGenericException<X extends Throwable> {
    void run() throws X;

    static RunnableWithGenericException<?> getInstance() {
        return () -> { throw new NotExist(); };
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Declare a specific exception type (e.g. `throws Exception`) in the `throws` clause of the functional method.

FREQUENCY : always