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  1. JDK
  2. JDK-8182036

Load from initializing arraycopy uses wrong memory state

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    • Subcomponent:
    • Resolved In Build:
      b21
    • Verification:
      Verified

      Description

          static int test1() {
              int[] src = new int[10];
              test_dummy = src;
              int[] dst = new int[10];
              src[1] = 0x42;
              System.arraycopy(src, 1, dst, 1, 9);
              return dst[1];
          }

      generates a load from src[1] on the raw memory slice that can be reordered with the store to src[1]. Always fail on 8. Only fail on 9 & 10 if we're unlucky with load scheduling.

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            • Assignee:
              roland Roland Westrelin
              Reporter:
              roland Roland Westrelin
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