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  1. JDK
  2. JDK-8257574

C2: "failed: parsing found no loops but there are some" assert failure

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    • b20
    • 16
    • b28

    Backports

      Description

        # Internal Error (/home/roland/jdk-jdk/src/hotspot/share/opto/loopnode.cpp:3752), pid=1215493, tid=1215508
        # assert(_ltree_root->_child == __null || C->has_loops() || only_has_infinite_loops() || C->has_exception_backedge()) failed: parsing found no loops but there are some

        from a CTW run. Also reproducible with:

        /**
         * @test
         *
         * @run main/othervm -Xcomp -XX:CompileOnly=TestInfiniteLoopNotInnerMost::test TestInfiniteLoopNotInnerMost
         *
         */
        public class TestInfiniteLoopNotInnerMost {
            public static void main(String[] args) {
                test(false);
            }

            private static void test(boolean flag) {
                if (flag) {
                    while (true) {
                        for (int i = 1; i < 100; i *= 2) {

                        }
                    }
                }
            }
        }

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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-8263423 C2: "failed: parsing found no loops but there are some" assert failure

            • P3 - Major loss of function.
            • 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-8263867 C2: "failed: parsing found no loops but there are some" assert failure

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8253923 C2 doesn't always run loop opts for compilations that include loops

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8294217 Assertion failure: parsing found no loops but there are some

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

            Commit Commit openjdk/jdk/86b65756

            Review Review openjdk/jdk/1556

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                roland Roland Westrelin
                roland Roland Westrelin
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                  Created:
                  Updated:
                  Resolved: