Function guile_sys::GC_get_heap_usage_safe

pub unsafe extern "C" fn GC_get_heap_usage_safe(
    arg1: *mut GC_word, 
    arg2: *mut GC_word, 
    arg3: *mut GC_word, 
    arg4: *mut GC_word, 
    arg5: *mut GC_word
)