#707 Repeated and nondeterministic application of "Number of removed write-only fields" and "Number of removed instructions" optimizations

[Leijurv]

Proguard repeatedly applies the "Number of removed write-only fields:" optimization.
In my example, every optimization pass from #5 onwards claims to have removed five write-only fields.

Additionally, some of the passes include "Number of removed instructions: -1". This appears to be nondeterministic behavior, and it has intermittently appeared on passes #12, #16, and #21.

Proguard verbose log: https://pastebin.com/VF5Qyxzt

Steps to reproduce:
git clone https://github.com/leijurv/Kitteh2.git
cd Kitteh2
git checkout proguard-bug
git pull
ant jar
java -jar ~/Downloads/proguard6.0.3/lib/proguard.jar @kitteh2.pro -verbose

Java version: 1.8.0_152
Proguard version: 6.0.3
Ant version: 1.10.1
Platform: Mac OSX High Sierra 10.13.4

[Leijurv]

As well as the github link with source code, here is the built jar and proguard config file that causes this behavior

[Leijurv]

Also, as far as I can tell, the final output jar still functions properly.

[T. Neidhart]

The problem has been fixed in 6.2.0, I verified it also on your sample project.

Thanks for the report and sample.