test/java/lang/Double/ParseDouble.java

@@ -21,11 +21,11 @@
  * questions.
  */
 
 /*
  * @test
- * @bug 4160406 4705734 4707389 4826774 4895911 4421494
+ * @bug 4160406 4705734 4707389 4826774 4895911 4421494 7021568
  * @summary Test for Double.parseDouble method and acceptance regex
  */
 
 import java.util.regex.*;
 import java.math.BigDecimal;

@@ -579,10 +579,35 @@
             double convertedLowerBound = Double.parseDouble(lowerBound.toString());
             double convertedUpperBound = Double.parseDouble(upperBound.toString());
         }
     }
 
+
+    private static void testStrictness() {
+        boolean failed = false;
+        double conversion, conversion_prev = 0;
+        double sum = 0.0; // Prevent conversion from being optimized away
+        //2-1047 + 2-1075
+        String decimal = "6.631236871469758276785396630275967243399099947355303144249971758736286630139265439618068200788048744105960420552601852889715006376325666595539603330361800519107591783233358492337208057849499360899425128640718856616503093444922854759159988160304439909868291973931426625698663157749836252274523485312442358651207051292453083278116143932569727918709786004497872322193856150225415211997283078496319412124640111777216148110752815101775295719811974338451936095907419622417538473679495148632480391435931767981122396703443803335529756003353209830071832230689201383015598792184172909927924176339315507402234836120730914783168400715462440053817592702766213559042115986763819482654128770595766806872783349146967171293949598850675682115696218943412532098591327667236328125E-316";
+
+        for(int i = 0; i <= 10000; i++) {
+            conversion = Double.parseDouble(decimal);
+            sum += conversion;
+            if (i != 0 && conversion != conversion_prev) {
+                failed = true;
+                System.out.printf("Iteration %d converts as %a%n",
+                                  i-1,conversion_prev);
+                System.out.printf("Iteration %d converts as %a%n",
+                                  i,conversion);
+            }
+            conversion_prev = conversion;
+        }
+        System.out.println("Sum = "  + sum);
+        if (failed)
+            throw new RuntimeException("Inconsistent conversion");
+    }
+
     public static void main(String[] args) throws Exception {
         rudimentaryTest();
 
         testParsing(goodStrings, false);
         testParsing(paddedGoodStrings, false);

@@ -593,7 +618,8 @@
         testRegex(paddedGoodStrings, false);
         testRegex(badStrings, true);
         testRegex(paddedBadStrings, true);
 
         testSubnormalPowers();
+        testStrictness();
     }
 }