JDK-8230520 : Incorrect UnifiedOop::is_narrow assertions
- Type: Bug
- Component: hotspot
- Sub-Component: jfr
- Affected Version: 14
- Priority: P4
- Status: Resolved
- Resolution: Duplicate
- Submitted: 2019-09-04
- Updated: 2019-12-04
- Resolved: 2019-12-04
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| JDK 14 |
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14Resolved  |
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Description
In edgeUtils.cpp, the file-scoped functions field_offset and array_offset call UnifiedOop::is_narrow on the result of a call to UnifiedOop::decode, in assertions that the value is not narrow. But a decoded result doesn't have the tag information to discriminate between narrow and not narrow. So these assertions will always pass, whether a narrow value is involved in the edge or not.
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