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[GR-59298] Incorrect compressed oop calculation for hubs in gdb-debughelpers. #9948

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Merged
merged 1 commit into from
Oct 24, 2024
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[GR-59298] Incorrect compressed oop calculation for hubs in gdb-debughelpers. #9948

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6 changes: 4 additions & 2 deletions substratevm/debug/gdbpy/gdb-debughelpers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -212,10 +212,12 @@ def get_compressed_oop(cls, obj: gdb.Value) -> int:
assert compression_shift >= 0
compressed_oop = compressed_oop >> compression_shift
if is_hub:
assert compression_shift >= 0
compressed_oop = compressed_oop << compression_shift
assert num_alignment_bits >= 0
compressed_oop = compressed_oop << num_alignment_bits
compressed_oop = compressed_oop >> num_alignment_bits
assert num_reserved_bits >= 0
compressed_oop = compressed_oop >> num_reserved_bits
compressed_oop = compressed_oop << num_reserved_bits

return compressed_oop

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