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  1. JDK
  2. JDK-8271589

Fatal error with variable shift count integer rotate operation.

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    • b10
    • generic
    • generic
    • Verified

    Backports

      Description

        Following test case results into a fatal error.

          public static final int LEN = 128;
          public static void rleft(int [] arr, int [] res, int shift) {
            for(int i = 0 ; i < LEN ; i++) {
               res[i] = Integer.rotateRight(arr[i], arr[i]);
            }
          }

        Problem exists since JDK-16 onwards.
        java -version
        openjdk version "16.0.1" 2021-04-20
        OpenJDK Runtime Environment (build 16.0.1+9-24)
        OpenJDK 64-Bit Server VM (build 16.0.1+9-24, mixed mode, sharing)

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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-8272399 Fatal error with variable shift count integer rotate operation.

            • P1 - Blocks development and/or testing work, production could not run.
            • 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-8272675 Fatal error with variable shift count integer rotate operation.

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed
            relates to

            Enhancement - null JDK-8248830 C2: Optimize Rotate API on x86

            • P3 - Major loss of function.
            • Resolved
            links to

            Commit Commit openjdk/jdk17u/9c213825

            Commit Commit openjdk/jdk/392fcc9d

            Review Review openjdk/jdk17u/12

            Review Review openjdk/jdk/4956

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                jbhateja Jatin Bhateja
                jbhateja Jatin Bhateja
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                  Updated:
                  Resolved: