RFR: 8228604: StackMapFrames are missing from redefined class bytes of retransformed classes [v3]
Alex Menkov
amenkov at openjdk.org
Thu Feb 2 00:17:58 UTC 2023
> classFileParser drops stack map frames for JDK classes (when verification is not required).
> As a result JvmtiClassFileReconstituter cannot restore the attribute for class redefinition.
> Note that if the class is in CDS archive, the frames are restored from CDS, so this issue affects only JDK classes which are not in CDS.
> This code is old (from "initial load") and I don't understand the reason it was implemented this way.
>
> Testing: tier1-tier6
Alex Menkov has updated the pull request incrementally with one additional commit since the last revision:
Updated test - addressed review comments
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/12155/files
- new: https://git.openjdk.org/jdk/pull/12155/files/76970bec..3ff8a90e
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=12155&range=02
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=12155&range=01-02
Stats: 134 lines in 2 files changed: 15 ins; 6 del; 113 mod
Patch: https://git.openjdk.org/jdk/pull/12155.diff
Fetch: git fetch https://git.openjdk.org/jdk pull/12155/head:pull/12155
PR: https://git.openjdk.org/jdk/pull/12155
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