# Re: \[RFC PATCH\] LKMM: Add ctrl\_dep() macro for control dependency

- From: Alan Stern \<stern@rowland.harvard.edu\>
- Date: 2021-10-02 14:29:39 
- List: linux-toolchains
- Page: https://ratatoskr.run/linux-toolchains/2021/10/1528787
- Thread: https://ratatoskr.run/linux-toolchains/2021/09/1525080/t.md

```text
On Fri, Oct 01, 2021 at 02:10:08PM -0500, Segher Boessenkool wrote:
> Compilers understand you want exactly what you wrote.  If you write
> something other than what you want, you only will get what you want by
> pure luck.

The problem is that at times you _can't_ write what you want because the
language offers no way to express it.

Alan
```