On Mon, 1 Sep 2025 05:31:43 GMT, Amit Kumar <[email protected]> wrote:
> Originally Reported in OpenJ9, fix by @AditiS11 present here: > https://github.com/ibmruntimes/openj9-openjdk-jdk25/pull/32 > > These test failure were reported in OpenJ9 (x86), I can't reproduce on my > system (s390x): > > java/foreign/TestFill.java > java/foreign/TestSegments.java > java/foreign/TestSegmentBulkOperationsContentHash.java > java/foreign/TestStringEncoding.java > java/foreign/TestVarArgs.java > > > > ```java > // Always allocate at least some memory so that zero-length segments > have distinct > // non-zero addresses. > alignedSize = Math.max(1, alignedSize); > > > Here minimum-allocated size will be 1, which is incorrect because > > > private static void initNativeMemory(long address, long byteSize) { > for (long i = 0; i < byteSize; i += Long.BYTES) { > UNSAFE.putLongUnaligned(null, address + i, 0); > } > } > > `initNativeMemory()` is going to write Long. Hello Amit, would it be possible to add a jtreg test for this? Do you know what was the code path or values for the `allocateNativeSegment()` call which triggered this issue. Having that replicated in a regression test I think would prevent this from happening again. ------------- PR Comment: https://git.openjdk.org/jdk/pull/27027#issuecomment-3241265723
