Hi, Eclipse has now changed their build procedures to bootstrap like so: A. build ecj itself with a pre-existing java compiler B. build ecj with output 1. C. use output of 2. to build rest of Eclipse We've modified like this: 1. a. build "franken-ecj" with gcj -C b. natively-compile 1a. 2. a. use output of 1. to build ecj a la A. above b. natively-compile 2a. 3. a. use output of 2. to build ecj a la B. above b. natively-compile 3b. 4. use output of 3. to build rest of Eclipse However, with both gcc head and our latest gcc-java RPMs (gcc-java-4.0.0-0.33), 3b. is failing for me: $ gcj -fPIC -fjni -findirect-dispatch -shared -Wl,-Bsymbolic -o ecj.withecj.jar.so ecj.withecj.jar org/eclipse/jdt/core/CheckDebugAttributes.java: In class 'org.eclipse.jdt.core.CheckDebugAttributes': org/eclipse/jdt/core/CheckDebugAttributes.java: In constructor '()': org/eclipse/jdt/core/CheckDebugAttributes.java:0: error: verification failed at PC=5: premature end of bytecode org/eclipse/jdt/core/CheckDebugAttributes.java:0: error: verification failed at PC=6: premature end of bytecode org/eclipse/jdt/core/CheckDebugAttributes.java:0: error: verification failed at PC=6: branch to middle of instruction org/eclipse/jdt/core/CheckDebugAttributes.java:0: error: verification failed at PC=5: premature end of bytecode org/eclipse/jdt/core/CheckDebugAttributes.java:0: error: verification failed at PC=6: premature end of bytecode org/eclipse/jdt/core/CheckDebugAttributes.java:0: error: verification failed at PC=7: stack sizes differ org/eclipse/jdt/core/CheckDebugAttributes.java:0: internal compiler error: Segmentation fault As opposed to: $ gcj -fPIC -fjni -findirect-dispatch -shared -Wl,-Bsymbolic -o ecj.withjavac.jar.so ecj.withjavac.jar $ Anyone have any ideas? I've put the two jars at [1] until I can narrow it down for a proper bug report. Andrew [1] http://people.redhat.com/overholt/ecj.withecj.jar http://people.redhat.com/overholt/ecj.withjavac.jar