Bug #2179: err: variables undeclared within an AVT - Saxon - Saxonica Developer Community

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Bug #2179

closed

err: variables undeclared within an AVT

Added by Michael Kay about 10 years ago. Updated about 9 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Michael Kay

Category:

XQuery conformance

Sprint/Milestone:

9.6.0.2

Start date:

2014-10-13

Due date:

% Done:

100%

Estimated time:

Legacy ID:

Applies to branch:

9.6

Fix Committed on Branch:

9.6

Fixed in Maintenance Release:

9.6.0.2

Platforms:

Description

From Gunther Rademacher on saxon-help list:

This XQuery

try {parse-xml("")} catch * {}

is rejected with a message of

XPST0008: Variable $err:code has not been declared

The following however works as expected:

try {parse-xml("")} catch * {{$err:code}}

Tested on Saxon-HE 9.6.0.1, but also occurs with Saxon-EE 9.5.

Best regards,

Gunther

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Updated by Michael Kay about 10 years ago

Subject changed from err: prefix undeclared within an AVT to err: variables undeclared within an AVT
Status changed from New to Resolved

Added test case try-catch-err-code-variable-13 to QT3 test suite.

The problem is that a new parser is instantiated to process expressions within "AVT"s (necessary because they can contain forwards references to namespace prefixes declared in later attributes), and the new parser doesn't know that it's processing something within a catch clause and that variables like $err:code are therefore in scope.

Patch produced and tested on the 9.7 branch, and retrofitted to 9.6 and 9.5.

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