Info copied from JDK-8000650

On Fedora 23 and OpenJDK 9, gunzip reports no errors:

$ gunzip --version
gunzip (gzip) 1.6

$ gunzip -tv ./com.ibm.icu_54.1.1.v201501272100.jar.pack.gz
./com.ibm.icu_54.1.1.v201501272100.jar.pack.gz: OK

But unpack200 fails as above:

$ ~/devel/jdk9-jdk9/build/images/jdk/bin/java -version
openjdk version "9-internal"
OpenJDK Runtime Environment (build 9-internal+0-2016-02-16-123502.omajid.jdk9-jdk9)
OpenJDK 64-Bit Server VM (build 9-internal+0-2016-02-16-123502.omajid.jdk9-jdk9, mixed mode

$ ~/devel/jdk9-jdk9/build/images/jdk/bin/unpack200 -v ./com.ibm.icu_54.1.1.v201501272100.jar.pack.gz ./com.ibm.icu_54.1.1.v201501272100.jar
Unpacking from ./com.ibm.icu_54.1.1.v201501272100.jar.pack.gz to ./com.ibm.icu_54.1.1.v201501272100.jar
com.sun.java.util.jar.pack.unpack.log.file=-
unpack.deflate.hint=(not set)
com.sun.java.util.jar.pack.unpack.remove.packfile=false
com.sun.java.util.jar.pack.verbose=1
com.sun.java.util.jar.pack.unpack.modification.time=(not set)
CRC error, invalid compressed data.