> Classfile API didn't handle transformations of class files version 50 and 
> below correctly. 
> 
> Proposed fix have two parts: 
> 1. Inflation of branch targets does not depend on StackMapTable attribute 
> presence for class file version 50 and below. Alternative fallback 
> implementation is provided. 
> 2. StackMapTable attribute is not generated for class file versions below 50.
> 
> StackMapsTest is also extended to test this patch.
> 
> Please review.
> 
> Thanks,
> Adam

Adam Sotona has updated the pull request incrementally with two additional 
commits since the last revision:

 - empty commit to trigger PR update
 - renamed StackCounter::stack and local to addStackSlot and ensureLocalSlot

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/13478/files
  - new: https://git.openjdk.org/jdk/pull/13478/files/5db0ed01..7d21663c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13478&range=13
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13478&range=12-13

  Stats: 71 lines in 1 file changed: 0 ins; 0 del; 71 mod
  Patch: https://git.openjdk.org/jdk/pull/13478.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13478/head:pull/13478

PR: https://git.openjdk.org/jdk/pull/13478

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