No unused function warnings
Without this, comping on macOS will result in lots of
rts/posix/OSMem.c:162:1: error:
warning: unused function 'post_mmap_madvise' [-Wunused-function]
|
162 | post_mmap_madvise(int operation, W_ size, void *ret)
| ^
post_mmap_madvise(int operation, W_ size, void *ret)