topic identifyLayers crash in Qt Maps SDK Questions

identifyLayers crash

VittorioBarulli — Mon, 30 Sep 2024 07:07:22 GMT

I found a bug in the library,

by using enclayers for s57, when using identifyLayers for searching objects represented in the map a crash occurs.

By trying to understand if I was making something wrong, I found that the bug happens if an identifyLayers is running and the user move the map.
I was able to reproduce this using arcgis V100.15 and V200.3.
The same happens by using identifyLayers (deprecated) or identifyLayersAsync (new method).

I tried to find a workaround, but there is no way to solve this. I think it should be corrected in the library:

I tryed to intercept the begin of maps movement operation (navigatingChanged event) to protect the identifyLayers operation. but No luck
I removed all my code, just to be sure that was not a problem of mine.

Does someone have idea to solve it?

In attachment there is a simple software (made with QtCreator) that issues identifyLayers requests and moves the cartography position, the crash timing is randomic but it always happens within a minute after start.

N.B.: I tried to contact directly the customer-care, but they answered:
Unfortunately, the information you provided does not appear to be a report of a bug

I think they answered without trying the attached source code.

Re: identifyLayers crash

bnoble0110 — Mon, 30 Sep 2024 14:53:50 GMT

Hey @VittorioBarulli,

I think you left your API key in the example code you provided. You may want to remove that and repost the code.

Re: identifyLayers crash

bnoble0110 — Wed, 30 Oct 2024 21:49:25 GMT

We've confirmed this issue, thank you for pointing this out to us @VittorioBarulli.

We've implemented a crash prevention measure (but not a full solution) for the 200.6 release. So while your application won't crash, it will return return an empty set of results in the case where a crash would have occurred. We realize this isn't an ideal solution, and we're investigating a solution that will return the expected results.