http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58414
Bug ID: 58414 Summary: String.format("%9d",(Long)null) returns null-pointer exception Product: gcc Version: 4.6.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libgcj Assignee: unassigned at gcc dot gnu.org Reporter: slatfatf at gmx dot de Created attachment 30817 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30817&action=edit minimal example String.format("%9d",(Long)null) returns null pointer exception but it should return the text " null". GCJ Returns the following: $ gcj --version gcj (Ubuntu/Linaro 4.6.3-1ubuntu2) 4.6.3 $ gcj -c src/BugReport.javajmueller@calculon:~/workspace/gcjTest$ gcj --main=BugReport -o BugReport BugReport.o $ ./BugReport The programm should return: null 10 but unfortunately it crashes: Exception in thread "main" java.lang.NullPointerException at java.util.Formatter.basicIntegralConversion(libgcj.so.12) at java.util.Formatter.decimalConversion(libgcj.so.12) at java.util.Formatter.format(libgcj.so.12) at java.util.Formatter.format(libgcj.so.12) at java.lang.String.format(libgcj.so.12) at java.lang.String.format(libgcj.so.12) at BugReport.main(BugReport) Whereas OpenJDK returns: $ /usr/lib/jvm/java-7-openjdk-amd64/bin/java -version java version "1.7.0_25" OpenJDK Runtime Environment (IcedTea 2.3.10) (7u25-2.3.10-1ubuntu0.12.04.2) OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode) $ /usr/lib/jvm/java-7-openjdk-amd64/bin/javac BugReport.java $ /usr/lib/jvm/java-7-openjdk-amd64/bin/java BugReport The programm should return: null 10 but unfortunately it crashes: null 10