[Bug c++/23457] New: compiler crash on huge object size with virtual base

["laurent dot deniau at cern dot ch" <gcc-bugzilla at gcc dot gnu dot org>]

Aim: check for B's vbase offset overflow in the D's vtable on IA32.

struct B {
  B() {}
  virtual ~B() {}
  int b;
};
struct D : virtual B {
  char d1[1u << 30];
  char d2[1u << 30];
};

g++-4.0 -std=c++98 -pedantic -W -Wall -O3 bug.cpp -c
bug.cpp:7: internal compiler error: in tree_low_cst, at tree.c:3843
Please submit a full bug report,

g++-4.0 -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f95,objc,ada,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib --enable-nls
--without-included-gettext --enable-threads=posix --program-suffix=-4.0
--enable-__cxa_atexit --enable-libstdcxx-allocator=mt --enable-clocale=gnu
--enable-libstdcxx-debug --enable-java-gc=boehm --enable-java-awt=gtk
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-4.0-1.4.2.0/jre --enable-mpfr
--disable-werror --enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.0.1 (Debian 4.0.1-2)

-- 
           Summary: compiler crash on huge object size with virtual base
           Product: gcc
           Version: 4.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: laurent dot deniau at cern dot ch
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23457