Found the reason it fixes it.
The machine I'm testing on is not tuned for lots of files:
[java] Caused by: java.io.FileNotFoundException:
/home/testing/gwt-orig/us\
er/src/com/google/gwt/i18n/client/impl/cldr/DateTimeFormatInfoImpl_eu.java
(Too\
many open files)
[java] at java.io.FileInputStream.open(Native Method)
[java] at
java.io.FileInputStream.<init>(FileInputStream.java:137)
[java] at
com.google.gwt.dev.resource.impl.FileResource.openContents(F\
ileResource.java:63)
[java] ... 7 more
The root cause is that the the original code doesn't close the stream
returned from Resource.openContents(). Everywhere else that
diskCache.transferFromStream() is used, its in the context of a
readObject() override, so this is the only place where this would cause
a problem.
FYI, here's the original stack trace. I've seen them before but not in
such a reproducable way
[java] [ERROR] Unexpected internal compiler error
[java] java.lang.NullPointerException
[java] at
com.google.gwt.dev.util.DiskCache.transferFromStream(DiskCache.java:154)
[java] at
com.google.gwt.dev.javac.SourceFileCompilationUnit.asCachedCompilationUnit(SourceFileCompilationUnit.java:59)
[java] at
com.google.gwt.dev.javac.CompilationUnitArchive.addUnit(CompilationUnitArchive.java:88)
[java] at
com.google.gwt.dev.CompileModule.run(CompileModule.java:283)
[java] at
com.google.gwt.dev.CompileModule$1.run(CompileModule.java:162)
[java] at
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:88)
[java] at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:82)
[java] at
com.google.gwt.dev.CompileModule.main(CompileModule.java:165)
http://gwt-code-reviews.appspot.com/1461803/
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