src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Parser.java

@@ -2666,12 +2666,16 @@
 
         if (type == IDENT || isNonStrictModeIdent()) {
             name = getIdent();
             verifyStrictIdent(name, "function name");
         } else if (isStatement) {
-            // Nashorn extension: anonymous function statements
-            if (env._no_syntax_extensions) {
+            // Nashorn extension: anonymous function statements.
+            // Do not allow anonymous function statement if extensions
+            // are now allowed. But if we are reparsing then anon function
+            // statement is possible - because it was used as function
+            // expression in surrounding code.
+            if (env._no_syntax_extensions && reparsedFunction == null) {
                 expect(IDENT);
             }
         }
 
         // name is null, generate anonymous name