src/java.base/share/classes/java/io/File.java

rev 56147 : 8229899: Make java.io.File.isInvalid() less racy

*** 180,194 ****
       * returning false does not guarantee that the path is valid.
       *
       * @return true if the file path is invalid.
       */
      final boolean isInvalid() {
!         if (status == null) {
!             status = (this.path.indexOf('\u0000') < 0) ? PathStatus.CHECKED
!                                                        : PathStatus.INVALID;
          }
!         return status == PathStatus.INVALID;
      }
  
      /**
       * The length of this abstract pathname's prefix, or zero if it has no
       * prefix.
--- 180,196 ----
       * returning false does not guarantee that the path is valid.
       *
       * @return true if the file path is invalid.
       */
      final boolean isInvalid() {
!         PathStatus s = status;
!         if (s == null) {
!             s = (this.path.indexOf('\u0000') < 0) ? PathStatus.CHECKED
!                                                   : PathStatus.INVALID;
!             status = s;
          }
!         return s == PathStatus.INVALID;
      }
  
      /**
       * The length of this abstract pathname's prefix, or zero if it has no
       * prefix.