[m-rev.] for review: hidden events

[Zoltan Somogyi]

On 30-Aug-2002, Fergus Henderson <fjh at cs.mu.OZ.AU> wrote:
> On 30-Aug-2002, Zoltan Somogyi <zs at cs.mu.OZ.AU> wrote:
> > Implement a flag that can be used by the compiler to signal to the debugger
> > that some events should be hidden from the user. The flag is not used yet.
> 
> Are there any bootstrapping issues with this change?

Only for workspaces compiled with debugging.

C source files generated with debugging enabled are not compatible across this
change, i.e. if C files generated by a compiler without this change are
compatible only with the runtime system before this change, while C files
generated by a compiler with this change are compatible only with the runtime
system after this change. This means that if you have a workspace with
debugging enabled:

- do not do a CVS update between the commit of this change (which I will do
  just before I go home today) and its overnight install, and

- do a CVS update and recompile the workspace after the overnight install.

Workspaces which have don't any C files with debugging enabled are not
affected at all.

> There should be an XXX comment in the source, near the definition of
> the flag, explaining that it is not used yet.

Done.

Zoltan.
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