# Re: \[PATCH v2 6/9\] perf tools: add destructors for parse event terms

- From: Jiri Olsa \<hidden\>
- Date: 2019-10-23 09:01:50 
- List: netdev
- Page: https://ratatoskr.run/netdev/2019/10/5753445
- Thread: https://ratatoskr.run/netdev/2019/10/5753173/t.md

```text
On Tue, Oct 22, 2019 at 05:53:34PM -0700, Ian Rogers wrote:
> If parsing fails then destructors are ran to clean the up the stack.
> Rename the head union member to make the term and evlist use cases more
> distinct, this simplifies matching the correct destructor.

I'm getting compilation fail:

  CC       util/parse-events-bison.o
util/parse-events.y: In function ‘yydestruct’:
util/parse-events.y:125:45: error: ‘struct tracepoint_name’ has no member named ‘sys’; did you mean ‘sys1’?
  125 | %destructor { free ($$.sys); free ($$.event); } <tracepoint_name>

jirka

```