[Tcl-bugs] [ tcl-Bugs-3024379 ] Errors thrown by the expr command may give NONE as errorCode

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Bugs item #3024379, was opened at 2010-07-02 14:55
Message generated for change (Comment added) made by dkf
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Category: 47. Bytecode Compiler
Group: current: 8.5.8
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Arjen Markus (arjenmarkus)
Assigned to: Donal K. Fellows (dkf)
Summary: Errors thrown by the expr command may give NONE as errorCode

Initial Comment:
Consider the following erroneous calls to expr:

expr {sqrt(-1)/2.0} and expr {sqrt(1/2.0}

The error messages are clear enough - a non-numeric floating point value in the first case and a missing parenthesis in the second.
In both cases however errorCode is NONE.

This makes it hard to distinguish domain errors and syntax errors 

Tcl version: 8.5.8

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>Comment By: Donal K. Fellows (dkf)
Date: 2010-07-02 21:59

Message:
Fixed on 8.5 branch.

Always now it's ARITH DOMAIN in the case you describe (since NaN isn't in
the domain of *any* math operator!)

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Comment By: Donal K. Fellows (dkf)
Date: 2010-07-02 21:39

Message:
Fixed on HEAD

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https://sourceforge.net/tracker/?func=detail&atid=110894&aid=3024379&group_id=10894