failpoint doesn't work if the marker function is defined in the main package

[pingcap]

failpoint doesn't work if the marker function is defined in the main package

[spongedu]

In production environment it's unlikely for the failpoint users to define a marker function in package main, But I think people incline to use such a simple test program to try failpint at first glimpse as I have done.

[spongedu]

@lonng as we've discussed yesterday.

[lonng]

There is an imperfect solution here.
go run main.go binding__failpoint_binding__.go

[spongedu]

@lonng Yes.... if we want to solve this thoroughly, maybe there's one method, but I'm not sure if its graceful.

1. generate binding__failpoint_binding__.go under package github.com/pingcap/failpoint as binding__failpoint_binding_UNIQ_IDENTITY__.go
2. rewrite the Marker function as __curpkg_UNIQ_IDENTITY__()......

[lonng]

@spongedu I don't think put the generated files in github.com/pingcap/failpoint/ is a good idea.
We should investigate a more graceful solution, How about putting the _curpkg_ to the end of the file?

[spongedu]

So what about the extra import:

import "reflect"

?

[lonng]

@spongedu Oops