The GCC in Ubuntu Karmic for ARM uses the vtable of the superclass when
inlining the constructors of several subclasses in the same function. This
happens only when using -fno-strict-aliasing. This can cause the program to
fail with a "pure virtual called" error. The V8 JavaScript engine is one
program that is vulnerable to this bug.
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.1-3ubuntu3'
--with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared
--enable-multiarch --enable-linker-build-id --with-system-zlib
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-mpfr --enable-objc-gc
--disable-sjlj-exceptions --with-arch=armv6 --with-tune=cortex-a8
--with-float=softfp --with-fpu=vfp --disable-werror --enable-checking=release
--build=arm-linux-gnueabi --host=arm-linux-gnueabi --target=arm-linux-gnueabi
Thread model: posix
gcc version 4.4.1 (Ubuntu 4.4.1-3ubuntu3)
--
Summary: g++: Inlining constructors puts wrong vtable in objects
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: erik at arbat dot com
GCC build triplet: arm-linux-gnueabi
GCC host triplet: arm-linux-gnueabi
GCC target triplet: arm-linux-gnueabi
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41354
