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-rw-r--r--scripts/qapi.py11
1 files changed, 5 insertions, 6 deletions
diff --git a/scripts/qapi.py b/scripts/qapi.py
index 8d2681b24b..c0728d73e1 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -560,15 +560,14 @@ def check_union(expr, expr_info):
# Else, it's a flat union.
else:
# The object must have a string member 'base'.
- if not isinstance(base, str):
+ check_type(expr_info, "'base' for union '%s'" % name,
+ base, allow_metas=['struct'])
+ if not base:
raise QAPIExprError(expr_info,
- "Flat union '%s' must have a string base field"
+ "Flat union '%s' must have a base"
% name)
base_fields = find_base_fields(base)
- if not base_fields:
- raise QAPIExprError(expr_info,
- "Base '%s' is not a valid struct"
- % base)
+ assert base_fields
# The value of member 'discriminator' must name a non-optional
# member of the base struct.