test/langtools/tools/javac/parser/JavacParserTest.java

*** 1039,1048 ****
--- 1039,1070 ----
  
          String actualErrors = normalize(out.toString());
          assertEquals("the error message is not correct, actual: " + actualErrors, expectedErrors, actualErrors);
      }
  
+     @Test //JDK-821742
+     void testCompDeclVarType() throws IOException {
+         String code = "package test; public class Test {"
+                 + "private void test() {"
+                 + "var v1 = 10,v2 = 12;"
+                 + "} private Test() {}}";
+ 
+         JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
+                 null, null, Arrays.asList(new MyFileObject(code)));
+         CompilationUnitTree cut = ct.parse().iterator().next();
+         ct.enter();
+         ct.analyze();
+         ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
+         MethodTree method = (MethodTree) clazz.getMembers().get(0);
+         VariableTree stmt1 = (VariableTree) method.getBody().getStatements().get(0);
+         VariableTree stmt2 = (VariableTree) method.getBody().getStatements().get(1);
+         Tree v1Type = stmt1.getType();
+         Tree v2Type = stmt2.getType();
+         assertEquals("Implicit type for v1 is not correct: ", Kind.PRIMITIVE_TYPE, v1Type.getKind());
+         assertEquals("Implicit type for v2 is not correct: ", Kind.PRIMITIVE_TYPE, v2Type.getKind());
+     }
+ 
      @Test
      void testCaseBodyStatements() throws IOException {
          String code = "class C {" +
                        "    void t(int i) {" +
                        "        switch (i) {" +