A content-model derivation's base must match its content-model keyword
(XSD 1.0 Structures 3.4.6):
- src-ct.1: a complexContent restriction/extension base must be a complex
type. A simpleType or a built-in simple type (xs:string) is rejected; the
ur-type xs:anyType is complex and remains a valid base.
- src-ct.2 (extension): a simpleContent extension base must be a simple type
or a complex type with simple content. A complex type with element-only,
mixed, or empty content, including xs:anyType, is rejected.
A locally-declared type takes precedence over the built-in reading, so a
schema that targets the XSD namespace and extends its own complex types
(the schema-for-schemas, e.g. xs:openAttrs) is not rejected. This caught a
self-inflicted false positive during development; the fix restores it.
XSTS: invalid-schemas-accepted 104 to 99 (ctE003/ctE004/ctK002/ctJ002/
ctJ003), valid-schemas-rejected held at 0, no other bucket moved. The
differential corroborates: PureXML-stricter unchanged at 87 over 9618
schemas (zero new over-rejection).
Mihaela Mihaljevic
9c57dedb64