John Snow <js...@redhat.com> writes:

> Iterating over the members of data isn't going to work if it's not some
> form of dict anyway, but for type safety, formalize it.
>
> Signed-off-by: John Snow <js...@redhat.com>
> Reviewed-by: Eduardo Habkost <ehabk...@redhat.com>
> ---
>  scripts/qapi/expr.py | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/scripts/qapi/expr.py b/scripts/qapi/expr.py
> index 864363881682..2654a72e8333 100644
> --- a/scripts/qapi/expr.py
> +++ b/scripts/qapi/expr.py
> @@ -254,6 +254,9 @@ def check_union(expr, info):
>              raise QAPISemError(info, "'discriminator' requires 'base'")
>          check_name_is_str(discriminator, info, "'discriminator'")
>  
> +    if not isinstance(members, dict):
> +        raise QAPISemError(info, "'data' must be an object")
> +
>      for (key, value) in members.items():
>          source = "'data' member '%s'" % key
>          check_name_str(key, info, source)
> @@ -267,6 +270,10 @@ def check_alternate(expr, info):
>  
>      if not members:
>          raise QAPISemError(info, "'data' must not be empty")
> +
> +    if not isinstance(members, dict):
> +        raise QAPISemError(info, "'data' must be an object")
> +
>      for (key, value) in members.items():
>          source = "'data' member '%s'" % key
>          check_name_str(key, info, source)

No raise without a test case covering it.

Add the test case *first*.  Just in case it demonstrates a frontend bug.
I believe these two are such bugs.


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