Bug: cosmocc Segmentation fault with 64k PAGESIZE

### Contact Details

_No response_

### What happened?

aarch64 linux with 64k pagesize 

bin/cosmocc -o hello hello.c
Segmentation fault

getconf PAGESIZE
65536

### Version

cosmocc (GCC) 14.1.0

### What operating system are you seeing the problem on?

Linux

### Relevant log output

```shell
bin/cosmocc -o hello hello.c
Segmentation fault

getconf PAGESIZE
65536
```