test/serviceability/sa/jmap-hprof/JMapHProfLargeHeapTest.java

*** 88,97 ****
--- 88,100 ----
          Process largeHeapProc = procBuilder.start();
  
          try (Scanner largeHeapScanner = new Scanner(
                  largeHeapProc.getInputStream());) {
              String pidstring = null;
+             if (!largeHeapScanner.hasNext()) {
+                 throw new RuntimeException ("Test failed: could not open largeHeapScanner.");
+             }
              while ((pidstring = largeHeapScanner.findInLine("PID\\[[0-9].*\\]")) == null) {
                  Thread.sleep(500);
              }
              int pid = Integer.parseInt(pidstring.substring(4,
                      pidstring.length() - 1));