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8373487: Out-of-bounds access in AlignmentGapAccess test

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Reviewed-by: dlong, ayang
This commit is contained in:
Vladimir Ivanov 2026-07-13 17:51:11 +00:00
parent 151516fae2
commit 30abe0b3a6
2 changed files with 6 additions and 3 deletions
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2
test/hotspot/jtreg/ProblemList.txt
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@ -67,8 +67,6 @@ compiler/interpreter/Test6833129.java 8335266 generic-i586
compiler/c2/aarch64/TestStaticCallStub.java 8359963 generic-aarch64
compiler/unsafe/AlignmentGapAccess.java 8373487 generic-all
compiler/escapeAnalysis/TestBCEscapeAnalyzerOverflow.java 8387392 windows-aarch64
#############################################################################

7
test/hotspot/jtreg/compiler/unsafe/AlignmentGapAccess.java
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@ -38,17 +38,22 @@ public class AlignmentGapAccess {
static class A { int fa; }
static class B extends A { byte fb; }
static class C extends B { int fc; }
static final long FA_OFFSET = UNSAFE.objectFieldOffset(A.class, "fa");
static final long FB_OFFSET = UNSAFE.objectFieldOffset(B.class, "fb");
static final long FC_OFFSET = UNSAFE.objectFieldOffset(C.class, "fc");
static int test(B obj) {
return UNSAFE.getInt(obj, FB_OFFSET + 1);
}
public static void main(String[] args) {
System.out.printf("Layout: +%d: fa; +%d: fb; +%d: fc\n",
FA_OFFSET, FB_OFFSET, FC_OFFSET);
for (int i = 0; i < 20_000; i++) {
test(new B());
test(new C());
}
System.out.println("TEST PASSED");
}