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-rw-r--r--scripts/qapi.py8
-rw-r--r--tests/qapi-schema/union-base-no-discriminator.err2
2 files changed, 1 insertions, 9 deletions
diff --git a/scripts/qapi.py b/scripts/qapi.py
index 23c32fe3dd..197db77a9f 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -526,14 +526,6 @@ def check_union(expr, expr_info):
     members = expr['data']
     values = { 'MAX': '(automatic)' }
 
-    # If the object has a member 'base', its value must name a struct,
-    # and there must be a discriminator.
-    if base is not None:
-        if discriminator is None:
-            raise QAPIExprError(expr_info,
-                                "Union '%s' requires a discriminator to go "
-                                "along with base" %name)
-
     # Two types of unions, determined by discriminator.
 
     # With no discriminator it is a simple union.
diff --git a/tests/qapi-schema/union-base-no-discriminator.err b/tests/qapi-schema/union-base-no-discriminator.err
index fc8b79c459..8b7a24260f 100644
--- a/tests/qapi-schema/union-base-no-discriminator.err
+++ b/tests/qapi-schema/union-base-no-discriminator.err
@@ -1 +1 @@
-tests/qapi-schema/union-base-no-discriminator.json:11: Union 'TestUnion' requires a discriminator to go along with base
+tests/qapi-schema/union-base-no-discriminator.json:11: Simple union 'TestUnion' must not have a base