http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57921
--- Comment #4 from Steve Ellcey <sje at gcc dot gnu.org> --- Digging around on the SPEC web page led me to this: http://www.spec.org/cpu2006/Docs/400.perlbench.html Known portability issues There are some known aliasing issues. The internal data structures that represent Perl's variables are accessed in such as a way as to violate ANSI aliasing rules. Compilation with optimizations that rely on strict compliance to ANSI C aliasing rules will most likely produce binaries that will not validate.
