[slf4j-dev] [Bug 164] New: NPE on LoggerFactory.singleImplementationSanityCheck

[bugzilla-daemon at pixie.qos.ch]

http://bugzilla.slf4j.org/show_bug.cgi?id=164

           Summary: NPE on LoggerFactory.singleImplementationSanityCheck
           Product: SLF4J
           Version: 1.5.x
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: Core API
        AssignedTo: slf4j-dev at qos.ch
        ReportedBy: joakim.erdfelt at gmail.com


This occurs on slf4j-api 1.5.7 and 1.5.8 when using logback 0.9.18
It does not occur on slf4j-api 1.5.6

Note: the environment being used has various java.endorsed.dirs setup where the
logging is initialized. This being not very normal, it could be the reason for
this NPE, as I believe LoggerFactory.class.getClassLoader() will return null in
this scenario.

java.lang.NullPointerException
        at
org.slf4j.LoggerFactory.singleImplementationSanityCheck(LoggerFactory.java:192)
        at
org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:113)
        at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:269)
        at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242)
        at org.eclipse.jetty.util.log.Slf4jLog.<init>(Slf4jLog.java:33)
        at org.eclipse.jetty.util.log.Slf4jLog.<init>(Slf4jLog.java:28)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
        at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at java.lang.Class.newInstance0(Class.java:355)
        at java.lang.Class.newInstance(Class.java:308)


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