ruby_init_stack  2480 include/ruby/ruby.h #define ruby_init_stack(addr) ruby_init_stack((addr), rb_ia64_bsp())
ruby_init_stack   730 thread_pthread.c #undef ruby_init_stack
ruby_init_stack   736 thread_pthread.c ruby_init_stack(volatile VALUE *addr
ruby_init_stack   546 thread_win32.c ruby_init_stack(volatile VALUE *addr)