Warnings for c-run-time.c

There are many many warnings of this type for c-run-time.c:

`c-run-time.c:1032:20: warning: passing arguments to a function without a prototype is deprecated in all versions of C and is not supported in C2x [-Wdeprecated-non-prototype]`

```
$ /usr/bin/clang -v
Apple clang version 15.0.0 (clang-1500.1.0.2.5)
Target: arm64-apple-darwin23.6.0
```