[Tilesathome] maplint GD/Image.pm value error?

[Dirk-Lüder Kreie]

Knut Arne Bjørndal schrieb:
> Hi
> 
> On 30. nov. 2009, at 15.19, Fredrik Johansson wrote:
>> Pretty frequently I get this error:
>>
>> [#959   0% maplint-z12] Splitting stripe 0... Can't use an undefined 
>> value as a symbol reference at /usr/lib/perl5/GD/Image.pm line 175.
[...]
> Often this error occurs after something else has already gone wrong, but 
> it may be hidden with the default verbosity level, try turning that up 
> if there are no error messages above that one.

In my experience it's almost always something else that went wrong.

> And yes, there should be some more error handling, I suspect that at 
> least some error handling around GD could give some less confusing 
> diagnostics (but wouldn't really solve anything else).

The entire error handling needs a rewrite, or at least a thorough 
testing. Several error counters are not reset correctly.

> Other than that the component I suspect most is the rasterizer, and the 
> SVG::Rasterize module already tries it's best to wrap error handling 
> around that. The problem is that the rasterizers almost seem hostile to 
> error handling, trying their very best to not do anything that's simple 
> to handle like returning error codes or failing in even remotely 
> predictable ways (much less gracefully, what kind of concept is that??)

True, very frustrating, that.


-- 
Dirk-Lüder "Deelkar" Kreie
Bremen - 53.0901°N 8.7868°E