Hello, I had a quick look at why crash was hanging on generating core files on 64b, it's simply because of the floating point state dump. On x86_64, glibc's fpregset_t happens to be a pointer to a structure (probably because with xsave etc. it could have a variable size). On Linux, elf_fpregset_t is defined as a structure, and used for pr_fpreg instead of fpregset_t, we most probably want to do that, and fix crash accordingly, i.e. essentially follow how we do it on i386.
Samuel
