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Bug
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Resolution: Duplicate
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P4
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14
UnifiedOop may attempt to construct oop* values that are misaligned. That has unspecified behavior. Any further manipulation of the value (such as attempting to convert back to a narrowOop*) can't remove that. And dereferencing a pointer with unspecified value is undefined behavior.
It is generally a bad idea to lie to the type system the way this class is doing. An alternative would be to have a distinct type that carried around the internal (tagged) pointer as a void* or the like. Make it a thin, trivially copyable class, and there's no additional overhead.
It is generally a bad idea to lie to the type system the way this class is doing. An alternative would be to have a distinct type that carried around the internal (tagged) pointer as a void* or the like. Make it a thin, trivially copyable class, and there's no additional overhead.
- duplicates
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JDK-8235174 ZGC: Add support for JFR leak profiler
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- Resolved
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- relates to
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- Closed
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- Closed
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- Closed
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