Possible bug: NullPointerException right on the call to the CTOR of ContentInfoUtil

[AndroidDeveloperLB]

I use this library on one of my Android apps, with this dependency:

implementation("com.j256.simplemagic:simplemagic:1.17")

I recently got a crash that I'm not sure what causes it.

The code that it crashes on is very simple, which works fine on my case, and it crashes right on the CTOR usage:

val util = ContentInfoUtil()
...

The relevant stacktrace:

Fatal Exception: java.lang.ExceptionInInitializerError:
       at com.j256.simplemagic.logger.LoggerFactory.findLogBackendFactory(LoggerFactory.java:108)
       at com.j256.simplemagic.logger.LoggerFactory.getLogger(LoggerFactory.java:43)
       at com.j256.simplemagic.logger.LoggerFactory.getLogger(LoggerFactory.java:35)
       at com.j256.simplemagic.entries.MagicEntries.<clinit>(MagicEntries.java:22)
       at com.j256.simplemagic.ContentInfoUtil.readEntries(ContentInfoUtil.java:380)
       at com.j256.simplemagic.ContentInfoUtil.readEntriesFromResource(ContentInfoUtil.java:372)
       at com.j256.simplemagic.ContentInfoUtil.<init>(ContentInfoUtil.java:80)
       at com.j256.simplemagic.ContentInfoUtil.<init>(ContentInfoUtil.java:65)
...

Caused by java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Package.getName()' on a null object reference
       at com.j256.simplemagic.logger.LogBackendType.<init>(LogBackendType.java:69)
       at com.j256.simplemagic.logger.LogBackendType.<clinit>(LogBackendType.java:19)
       at com.j256.simplemagic.logger.LoggerFactory.findLogBackendFactory(LoggerFactory.java:108)
       at com.j256.simplemagic.logger.LoggerFactory.getLogger(LoggerFactory.java:43)
       at com.j256.simplemagic.logger.LoggerFactory.getLogger(LoggerFactory.java:35)
       at com.j256.simplemagic.entries.MagicEntries.<clinit>(MagicEntries.java:22)
       at com.j256.simplemagic.ContentInfoUtil.readEntries(ContentInfoUtil.java:380)
       at com.j256.simplemagic.ContentInfoUtil.readEntriesFromResource(ContentInfoUtil.java:372)
       at com.j256.simplemagic.ContentInfoUtil.<init>(ContentInfoUtil.java:80)
       at com.j256.simplemagic.ContentInfoUtil.<init>(ContentInfoUtil.java:65)
...

It doesn't seem like the app was modified, but it's just one crash for a single user. Then again, I wouldn't call the app popular, and reaching this part of the app might be rare.

[j256]

Yikes. I see it. class.getPackage() can return null. Wow. Ok I have a fix in place to SimpleLogging and I will push out a to SimpleMagic after.

I'm wondering if you should exclude the SimpleLogging code from obfuscation. I wonder if that is the issue. The idea that a class doesn't have a package is very strange to me.

[j256]

See: j256/simplelogging#37

[AndroidDeveloperLB]

Why would it be so rare though?
As for a workaround, please explain what you are suggesting to do in the meantime.
I added try-catch for now.