test/jdk/java/foreign/TestDereferencePath.java

*** 22,11 ***
   *
   */
  
  /*
   * @test
-  * @enablePreview
   * @run testng TestDereferencePath
   */
  
  import java.lang.foreign.Arena;
  import java.lang.foreign.MemoryLayout;
--- 22,10 ---

*** 71,11 ***
              // init struct fields
              a.set(ValueLayout.ADDRESS, 0, b);
              b.set(ValueLayout.ADDRESS, 0, c);
              c.set(ValueLayout.JAVA_INT, 0, 42);
              // dereference
!             int val = (int) abcx.get(a);
              assertEquals(val, 42);
          }
      }
  
      static final MemoryLayout B_MULTI = MemoryLayout.structLayout(
--- 70,11 ---
              // init struct fields
              a.set(ValueLayout.ADDRESS, 0, b);
              b.set(ValueLayout.ADDRESS, 0, c);
              c.set(ValueLayout.JAVA_INT, 0, 42);
              // dereference
!             int val = (int) abcx.get(a, 0L);
              assertEquals(val, 42);
          }
      }
  
      static final MemoryLayout B_MULTI = MemoryLayout.structLayout(

*** 96,28 ***
      @Test
      public void testMulti() {
          try (Arena arena = Arena.ofConfined()) {
              // init structs
              MemorySegment a = arena.allocate(A);
!             MemorySegment b = arena.allocateArray(B, 2);
!             MemorySegment c = arena.allocateArray(C, 4);
              // init struct fields
              a.set(ValueLayout.ADDRESS, 0, b);
              b.set(ValueLayout.ADDRESS, 0, c);
              b.setAtIndex(ValueLayout.ADDRESS, 1, c.asSlice(C.byteSize() * 2));
              c.setAtIndex(ValueLayout.JAVA_INT, 0, 1);
              c.setAtIndex(ValueLayout.JAVA_INT, 1, 2);
              c.setAtIndex(ValueLayout.JAVA_INT, 2, 3);
              c.setAtIndex(ValueLayout.JAVA_INT, 3, 4);
              // dereference
!             int val00 = (int) abcx_multi.get(a, 0, 0); // a->b[0]->c[0] = 1
              assertEquals(val00, 1);
!             int val10 = (int) abcx_multi.get(a, 1, 0); // a->b[1]->c[0] = 3
              assertEquals(val10, 3);
!             int val01 = (int) abcx_multi.get(a, 0, 1); // a->b[0]->c[1] = 2
              assertEquals(val01, 2);
!             int val11 = (int) abcx_multi.get(a, 1, 1); // a->b[1]->c[1] = 4
              assertEquals(val11, 4);
          }
      }
  
      @Test(expectedExceptions = IllegalArgumentException.class)
--- 95,28 ---
      @Test
      public void testMulti() {
          try (Arena arena = Arena.ofConfined()) {
              // init structs
              MemorySegment a = arena.allocate(A);
!             MemorySegment b = arena.allocate(B, 2);
!             MemorySegment c = arena.allocate(C, 4);
              // init struct fields
              a.set(ValueLayout.ADDRESS, 0, b);
              b.set(ValueLayout.ADDRESS, 0, c);
              b.setAtIndex(ValueLayout.ADDRESS, 1, c.asSlice(C.byteSize() * 2));
              c.setAtIndex(ValueLayout.JAVA_INT, 0, 1);
              c.setAtIndex(ValueLayout.JAVA_INT, 1, 2);
              c.setAtIndex(ValueLayout.JAVA_INT, 2, 3);
              c.setAtIndex(ValueLayout.JAVA_INT, 3, 4);
              // dereference
!             int val00 = (int) abcx_multi.get(a, 0L, 0, 0); // a->b[0]->c[0] = 1
              assertEquals(val00, 1);
!             int val10 = (int) abcx_multi.get(a, 0L, 1, 0); // a->b[1]->c[0] = 3
              assertEquals(val10, 3);
!             int val01 = (int) abcx_multi.get(a, 0L, 0, 1); // a->b[0]->c[1] = 2
              assertEquals(val01, 2);
!             int val11 = (int) abcx_multi.get(a, 0L, 1, 1); // a->b[1]->c[1] = 4
              assertEquals(val11, 4);
          }
      }
  
      @Test(expectedExceptions = IllegalArgumentException.class)

*** 150,9 ***
              ValueLayout.ADDRESS.withTargetLayout(ValueLayout.JAVA_INT).withName("x"));
  
          try (Arena arena = Arena.ofConfined()) {
              MemorySegment segment = arena.allocate(struct.byteSize() + 1).asSlice(1);
              VarHandle vhX = struct.varHandle(PathElement.groupElement("x"), PathElement.dereferenceElement());
!             vhX.set(segment, 42); // should throw
          }
      }
  }
--- 149,9 ---
              ValueLayout.ADDRESS.withTargetLayout(ValueLayout.JAVA_INT).withName("x"));
  
          try (Arena arena = Arena.ofConfined()) {
              MemorySegment segment = arena.allocate(struct.byteSize() + 1).asSlice(1);
              VarHandle vhX = struct.varHandle(PathElement.groupElement("x"), PathElement.dereferenceElement());
!             vhX.set(segment, 0L, 42); // should throw
          }
      }
  }