Node tool on PostGIS table with null geometry causes crash

[qgib]

Author Name: Simon Casley (Simon Casley)
Original Redmine Issue: 12813
Affected QGIS version: master
Redmine category:digitising

---

Hi,

When using the node tool to edit features from a PostGIS table, I was getting an 'Unknown Exception' error whenever I tried to move a node or add a new one. I’m then unable to display nodes on this layer – clicking on a feature brings up the message “Node tool: could not snap to a segment on the current layer”. QGIS then crashes when I try to remove that layer, open a new project, or close QGIS.

Looks like it only happens on PostGIS layers that contain a feature with null geometry. Node tool works fine on the same data as a shapefile.

I could edit the same PostGIS layer without any issue in 2.6.

Cheers
Simon

---

• stream_ln.backup (Simon Casley)
• stream_ln.zip (Simon Casley)

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

could you please qgis master and report back?

---

• category_id was configured as Digitising
• status_id was changed from Open to Feedback

[qgib]

Author Name: Simon Casley (Simon Casley)

---

I've just tried it on 2.9.0-Master (on Windows) 32 and 64 bit versions, and I get the same error.

Also, noticed that the extents of the layer shown in Metadata are initially: xMin,yMin 574694.62,474760.06 : xMax,yMax 1344737.38,926735.31, but after clicking 'Update extents', they become: xMin,yMin -179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.00,-179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.00 : xMax,yMax 179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.00,179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.00

Cheers
Simon

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

please provide sample data.

---

• version was changed from 2.8.2 to master

[qgib]

Author Name: Simon Casley (Simon Casley)

---

Hi - here are sample data: a (sql) dump from postgresql and the same data saved as a shapefile. There is one feature (objectid 641) which has empty geometry.
I'm using postgresql 9.1.15, postgis 2.0
Thanks!

---

• 8757 was configured as stream_ln.backup
• 8758 was configured as stream_ln.zip

---

• stream_ln.backup (Simon Casley)
• stream_ln.zip (Simon Casley)

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

Simon Casley wrote:

Hi - here are sample data: a (sql) dump from postgresql a

no crash whatsoever here on qgis master, pg 9.3 postgis 2.1

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

Simon Casley wrote:

Hi - here are sample data: a (sql) dump from postgresql and the same data saved as a shapefile. There is one feature (objectid 641) which has empty geometry.
I'm using postgresql 9.1.15, postgis 2.0
Thanks!

I cannot replicate this on multiple systems and qgis/postgis versions. I would appreciate if you could test on other systems, so we can exclude that is a local issue (as it is likely to be).

[qgib]

Author Name: Giovanni Manghi (@gioman)

---

closing for lack of feedback.

---

• resolution was changed from to worksforme
• status_id was changed from Feedback to Closed