Given this schema file, t.xsd:
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";>
<xs:element name="t" type="xs:double"/>
</xs:schema>
And this xml document, t.xml:
<t>e</t>
I got this:
$ xmllint --schema t.xsd t.xml
<?xml version="1.0"?>
<t>e</t>
t.xml validates
Note that <t>.</t> and <t>.e</t> also validate.
I tracked it down to xmlschematypes.c, starting around line 2465, where
it starts scanning the input for something suitable for sscanf("%lf").
Should that code contain an extra check that there is at least one digit
somewhere? I think it comes down to the definition of "decimal" in the
spec¹; the lexical representation arguably allows for such degenerates,
although the canonical representation does not.
So, is this a bug? I couldn't find a bug or any previous discussion one
way or the other. If it is a bug, is it in xmlschematypes.c or in the
underlying sscanf implementations? I get the same results at work
(OpenSolaris) and at home (Debian).
Regards,
Dan
¹ http://www.w3.org/TR/xmlschema-2/#decimal
--
Μὴ μοῦ τοὺς κύκλους τάραττε -- Αρχιμηδησ
Do not disturb my circles. -- Archimedes
Dan Sommers, http://www.tombstonezero.net/dan
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