8322532: JShell : Unnamed variable issue

Reviewed-by: asotona

Author: lahodaj

src/jdk.jshell/share/classes/jdk/jshell/CompletenessAnalyzer.java

@@ -190,7 +190,7 @@ static enum TK {
         EOF(TokenKind.EOF, 0),  //
         ERROR(TokenKind.ERROR, XERRO),  //
         IDENTIFIER(TokenKind.IDENTIFIER, XEXPR1|XDECL1|XTERM),  //
-        UNDERSCORE(TokenKind.UNDERSCORE, XDECL1),  //  _
+        UNDERSCORE(TokenKind.UNDERSCORE, XDECL1|XEXPR),  //  _
         CLASS(TokenKind.CLASS, XEXPR|XDECL1|XBRACESNEEDED),  //  class decl (MAPPED: DOTCLASS)
         MONKEYS_AT(TokenKind.MONKEYS_AT, XEXPR|XDECL1),  //  @
         IMPORT(TokenKind.IMPORT, XDECL1|XSTART),  //  import -- consider declaration

test/langtools/jdk/jshell/VariablesTest.java

@@ -23,7 +23,7 @@
 
 /*
  * @test
- * @bug 8144903 8177466 8191842 8211694 8213725 8239536 8257236 8252409 8294431
+ * @bug 8144903 8177466 8191842 8211694 8213725 8239536 8257236 8252409 8294431 8322532
  * @summary Tests for EvaluationState.variables
  * @library /tools/lib
  * @modules jdk.compiler/com.sun.tools.javac.api
@@ -621,4 +621,10 @@ public void varAnonymousClassAndStaticField() { //JDK-8294431
         assertEval("var obj = new Object() { public static final String msg = \"hello\"; };");
     }
 
+    public void underscoreAsLambdaParameter() { //JDK-8322532
+        assertAnalyze("Func f = _ -> 0; int i;",
+                      "Func f = _ -> 0;",
+                      " int i;", true);
+    }
+
 }