[Qgis-developer] 2.10 segfaults on startup

[Radim Blazek]

On Fri, Jul 3, 2015 at 9:35 AM, Richard Duivenvoorde
<rdmailings at duif.net> wrote:

> src/providers/ogr/qgsogrdataitems.cpp: 50: (QgsOgrLayerItem) [0ms]
> [thread:0x15a59d0] lock

So it is locked.

> #0  0x00007fffefea6ff4 in spatialite_init ()
>    from /usr/lib/x86_64-linux-gnu/libspatialite.so.5
> #1  0x00007ffff4dab5ef in ?? () from /usr/lib/libgdal.so.1
> #2  0x00007ffff4daf463 in ?? () from /usr/lib/libgdal.so.1
> #3  0x00007ffff4db402b in ?? () from /usr/lib/libgdal.so.1
> #4  0x00007ffff4da251b in OGRSFDriverRegistrar::Open(char const*, int,
> OGRSFDriver**) () from /usr/lib/libgdal.so.1
> #5  0x00007ffff4a7c8c8 in ?? () from /usr/lib/libgdal.so.1
> #6  0x00007ffff4b4365d in ?? () from /usr/lib/libgdal.so.1
> #7  0x00007ffff4b438b6 in ?? () from /usr/lib/libgdal.so.1
> #8  0x00007fff89be9bb2 in QgsGdalLayerItem::QgsGdalLayerItem (

Still the same.

> Nope, it is just that I think it is the same issue... But isn't it
> 'just' a fact of a wrong spatialite lib, or I mean to say: are you sure
> we can fix this without fixing the spatialite lib?

I thought we can, I thought that the problem is concurrent calling of
spatialite_init () from multiple threads. I don't know details about
why it crashes in spatialite_init(), but mutex lock does not help.
I'll revert the commit.

GDALOpen/OGROpen are only used to identify if it is Shapefile to add
SetCrs capability, can you try to comment
 GDALAllRegister() and everything after that in
QgsGdalLayerItem::QgsGdalLayerItem and
OGRRegisterAll() and everything after that in QgsOgrLayerItem::QgsOgrLayerItem?
If it works, it can be disabled using SPATIALITE_VERSION_G_4_1_1.

> We cannot 'disable' spatialite in our compiled gdal lib, can we?

We call GDALAllRegister/OGRRegisterAll, I dont see a possibility to
exclude a driver apart GDALDeregisterDriver (GDALDriverH)
but GDALAllRegister/OGRRegisterAll are spread around QGIS code (19/5
occurences).

> Or compile QGIS in a way to totally forget about it (while we have this issue in Debian)?

Disable spatialite in GDAL? No idea.

Unfortunately I am leaving now and will be back in a week so I cannot
help in next days.

Radim