On Thu, 17 Apr 2025 20:51:10 GMT, Chen Liang <li...@openjdk.org> wrote:

>> When jdeps was migrated from old classfile to ClassFile API, the parsing 
>> semantic changed - error checks are now made lazily, and nested crashes from 
>> malformed signature or other problems is now latent, after a `ClassModel` 
>> instance is available. (The old error check existed only for constructing a 
>> `ClassModel`)
>> 
>> To address this issue, I have updated the way of iterating class files to be 
>> handler/consumer based like in the ClassFile API. This has the advantage 
>> that when one invocation of the handler fails of a `ClassFileError`, other 
>> invocations for other class files can proceed, and the exception handler has 
>> sufficient information to report a useful message indicating the source of 
>> error.
>> 
>> For the particular example of examining a proguard processed 
>> `dummy-scala.jar`, here is the new output of `jdeps dummy-scala.jar`:
>> 
>> Warning: com.sun.tools.jdeps.Dependencies$ClassFileError: Unexpected 
>> character ; at position 59, expected an identifier: 
>> Lscala/collection/immutable/TreeMap$TreeMapBuilder<TA;TB;>.;: 
>> scala/collection/immutable/TreeMap$TreeMapBuilder.class (dummy-scala.jar)
>> Warning: com.sun.tools.jdeps.Dependencies$ClassFileError: Unexpected 
>> character ; at position 49, expected an identifier: 
>> Lscala/collection/parallel/mutable/ParArray<TT;>.;: 
>> scala/collection/parallel/mutable/ParArray.class (dummy-scala.jar)
>> 
>> 
>> Now, jdeps shows the bad class files. Inspection into the files reveal that 
>> proguard incorrectly deleted the simple class names with trailing `$`, for 
>> example, the original signature of the broken ParArray was 
>> `Lscala/collection/parallel/mutable/ParArray<TT;>.ParArrayIterator$;`, so 
>> the `ParArrayIterator$` part was incorrectly dropped by proguard.
>> 
>> Testing: langtools/tools/jdeps.
>
> Chen Liang has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   Review remarks

Looks good to me

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

Marked as reviewed by henryjen (Committer).

PR Review: https://git.openjdk.org/jdk/pull/24604#pullrequestreview-2776919222

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