tree a603dc3f1aca3f125172345d544b833a7b9e73cb
parent b40646010121012b442a998766d76a617abd546c
author David Chisnall <github@theravensnest.org> 1727971827 +0100
committer David Chisnall <davidchisnall@users.noreply.github.com> 1728050902 +0100

Don't invoke error handlers when the callee errors.

I originally made a forced unwind out of a compartment invoke the
caller's error handler (if it existed) with a special error code.  The
idea was that you could use error handlers to jump to recovery paths,
rather than checking return values.

This seemed like a good idea at the time, but turned out to be a
mistake.  The only code that has ever used this behaviour was the test
suite.  Other error handlers have special-case logic to check if this is
the reason and ignore it if so.  It also added a lot of confusing
control flow in the switcher, which is bad because the switcher is the
core of the TCB.

Fixes #302