http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49461
Summary: boehm-gc and gcj incompatible with pie Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: unassig...@gcc.gnu.org ReportedBy: howa...@nitro.med.uc.edu When built with -pie linkage on intel darwin, the boehm-gc test suite fails the tests... FAIL: boehm-gc.c/gctest.c -O2 execution test FAIL: boehm-gc.c/leak_test.c -O2 execution test FAIL: boehm-gc.c/thread_leak_test.c -O2 execution test FAIL: boehm-gc.lib/staticrootstest.c -O2 execution test at both -m32 and -m64. Likewise gcj crashes when ecj1 is built with -pie linkage. This crash appears as... [MacPro:~] howarth% gcj-fsf-4.7 --main=testme -O testme.java -pie -v Using built-in specs. Reading specs from /sw/lib/gcc4.7/lib/gcc/x86_64-apple-darwin11.0.0/4.7.0/../../../libgcj.spec rename spec startfile to startfileorig rename spec lib to liborig COLLECT_GCC=gcj-fsf-4.7 COLLECT_LTO_WRAPPER=/sw/lib/gcc4.7/libexec/gcc/x86_64-apple-darwin11.0.0/4.7.0/lto-wrapper Target: x86_64-apple-darwin11.0.0 Configured with: ../gcc-4.7-20110617/configure --prefix=/sw --prefix=/sw/lib/gcc4.7 --mandir=/sw/share/man --infodir=/sw/lib/gcc4.7/info --enable-languages=c,c++,fortran,objc,obj-c++,java --with-gmp=/sw --with-libiconv-prefix=/sw --with-ppl=/sw --with-cloog=/sw --with-mpc=/sw --with-system-zlib --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib --program-suffix=-fsf-4.7 --enable-checking=yes --enable-cloog-backend=isl Thread model: posix gcc version 4.7.0 20110617 (experimental) (GCC) COLLECT_GCC_OPTIONS='-fsaw-java-file' '-mmacosx-version-min=10.7.0' '-O' '-pie' '-v' '-fbootclasspath=./:/sw/lib/gcc4.7/share/java/libgcj-4.7.0.jar' '-shared-libgcc' '-mtune=core2' /sw/lib/gcc4.7/libexec/gcc/x86_64-apple-darwin11.0.0/4.7.0/ecj1 testme.java -fbootclasspath=./:/sw/lib/gcc4.7/share/java/libgcj-4.7.0.jar -fsource=1.5 -ftarget=1.5 -fzip-dependency /var/folders/1l/n78sywl52lz6kkys6nv7mnph0000gp/T//ccxj1zOQ.zip -fzip-target /var/folders/1l/n78sywl52lz6kkys6nv7mnph0000gp/T//ccXXudTY.jar Exception in thread "main" java.lang.ClassFormatError: org.eclipse.jdt.internal.compiler.Compiler (erroneous exception handler info) at java.lang.VMClassLoader.defineClass(libgcj.12.dylib) at java.lang.ClassLoader.defineClass(libgcj.12.dylib) at java.security.SecureClassLoader.defineClass(libgcj.12.dylib) at java.net.URLClassLoader.findClass(libgcj.12.dylib) at java.lang.ClassLoader.loadClass(libgcj.12.dylib) at java.lang.ClassLoader.loadClass(libgcj.12.dylib) at org.eclipse.jdt.internal.compiler.impl.CompilerOptions.resetDefaults(CompilerOptions.java:963) at org.eclipse.jdt.internal.compiler.impl.CompilerOptions.<init>(CompilerOptions.java:371) at org.eclipse.jdt.internal.compiler.impl.CompilerOptions.<init>(CompilerOptions.java:363) at org.eclipse.jdt.internal.compiler.batch.Main.initialize(Main.java:3548) at org.eclipse.jdt.internal.compiler.batch.Main.<init>(Main.java:1435) at org.eclipse.jdt.internal.compiler.batch.Main.<init>(Main.java:1423) at org.eclipse.jdt.internal.compiler.batch.GCCMain.<init>(GCCMain.java:62) at org.eclipse.jdt.internal.compiler.batch.GCCMain.main(GCCMain.java:498) The problems with gcj can be avoided by passing -no_pie via SYSTEMSPEC in gcj.spec.in. The test suite results for libjava are reasonable with that change.... http://gcc.gnu.org/ml/gcc-testresults/2011-06/msg01853.html