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  1. JDK
  2. JDK-8280950

RandomGenerator:NextDouble() default behavior non conformant after JDK-8280550 fix

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    • b08
    • Verified

    Backports

      Description

        The following test quoted below that validates the spec
        https://download.java.net/java/early_access/jdk19/docs/api/java.base/java/util/random/RandomGenerator.html#nextDouble(double)

        > "Implementation Requirements:
        > The default implementation checks that bound is a positive finite double. Then invokes nextDouble(), scaling the result so that the final result lies between 0.0 (inclusive) and bound (exclusive)."

        fails with JDK 19-pre08 bundles.

        This is the test which is supplying the positive finite double and expecting the results as specified :

        =============
                RandomGenerator rg = new RandomGenerator() {
                    @Override
                    public double nextDouble() {
                        return 123456789.34d;
                    }

                    @Override
                    public long nextLong() {
                        return 0;
                    }
                };
                double value = rg.nextDouble(bound); // the "bound" used by the specific test could be any value from the list of {Double.MIN_VALUE, 10.0, 1234455555.45, 10000000d}
                Assert.assertTrue(value >= 0);
                Assert.assertTrue(value < bound); // fails here
        ==========

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8281882 RandomGenerator:NextDouble() default behavior non conformant after JDK-8280550 fix

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8288061 RandomGenerator:NextDouble() default behavior non conformant after JDK-8280550 fix

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8296314 RandomGenerator:NextDouble() default behavior non conformant after JDK-8280550 fix

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8281557 RandomGenerator:NextDouble() default behavior non conformant after JDK-8280550 fix

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8285788 RandomGenerator:NextDouble() default behavior non conformant after JDK-8280550 fix

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8293062 RandomGenerator:NextDouble() default behavior non conformant after JDK-8280550 fix

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8293063 RandomGenerator:NextDouble() default behavior non conformant after JDK-8280550 fix

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed
            is cloned by

            Bug - A problem which impairs or prevents the functions of the product. JDK-8281183 RandomGenerator:NextDouble() default behavior partially fixed by JDK-8280950

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8280550 SplittableRandom#nextDouble(double,double) can return result >= bound

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed
            links to

            Commit Commit openjdk/jdk11u-dev/182173af

            Commit Commit openjdk/jdk17u-dev/9a4f12d5

            Commit Commit openjdk/jdk18u/e1dfd9fa

            Commit Commit openjdk/jdk/0e70d450

            Review Review openjdk/jdk11u-dev/1487

            Review Review openjdk/jdk17u-dev/434

            Review Review openjdk/jdk18u/22

            Review Review openjdk/jdk/7292

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                darcy Joe Darcy
                kganapureddy Krushnareddy Ganapureddy
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