I found this bugs

[fabiosmoker]

# 3 "pippo.cpp"
class A {

      struct a {

               int b ;
               extern struct B::c n;

      };

};

class B {

      struct c {

               int f ;
      };

};


gcc -c pippo.cpp -lstdc++


pippo.cpp:8: Internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL: http://www.gnu.org/software/gcc/bugs.html > for instructions.




Reading specs from /usr/lib/gcc-lib/i386-slackware-linux/3.0/specs
Configured with: ../gcc-3.0/configure --prefix=/usr --enable-shared 
--with-gnu-ld --enable-threads --verbose --target=i386-slackware-linux 
--host=i386-slackware-linux
Thread model: posix
gcc version 3.0


Reading specs from /usr/lib/gcc-lib/i386-slackware-linux/3.0/specs
Configured with: ../gcc-3.0/configure --prefix=/usr --enable-shared 
--with-gnu-ld --enable-threads --verbose --target=i386-slackware-linux 
--host=i386-slackware-linux
Thread model: posix
gcc version 3.0
 /usr/lib/gcc-lib/i386-slackware-linux/3.0/cpp0 -lang-c++ -D__GNUG__=3 
 -D__GXX_DEPRECATED -D__EXCEPTIONS -D__GXX_ABI_VERSION=100 -v 
 -D__GNUC__=3 -D__GNUC_MINOR__=0 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ 
 -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux 
 -Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE 
 -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ 
 -D__tune_i386__ pippo.cpp pippo.ii
GNU CPP version 3.0 (cpplib) (i386 Linux/ELF)
ignoring nonexistent directory "/usr/i386-slackware-linux/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/g++-v3
 /usr/include/g++-v3/i386-slackware-linux
 /usr/include/g++-v3/backward
 /usr/local/include
 /usr/lib/gcc-lib/i386-slackware-linux/3.0/include
 /usr/include
End of search list.
 /usr/lib/gcc-lib/i386-slackware-linux/3.0/cc1plus -fpreprocessed pippo.ii 
 -quiet -dumpbase pippo.cpp -version -o pippo.s
GNU CPP version 3.0 (cpplib) (i386 Linux/ELF)
GNU C++ version 3.0 (i386-slackware-linux)
	compiled by GNU C version 3.0.
pippo.cpp:8: Internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL: http://www.gnu.org/software/gcc/bugs.html > for instructions.