[gdal-dev] Need help if OGR C-API

[Stephen Woodbridge]

Even,

Here is my test program:

$ cat testogr.c
#include "ogr_api.h"

int main() {
     OGRDataSourceH hDSin;
     OGRLayerH hLayerIn;
     OGRFeatureDefnH hFDefnIn;
     OGRwkbGeometryType layerGeomType;

     OGRRegisterAll();

     hDSin = OGROpen( "/u/data/routeloops-v2/25/25017/Streets.shp", 
FALSE, NULL );
     hLayerIn = OGR_DS_GetLayerByName( hDSin, "Streets" );

     hFDefnIn = OGR_L_GetLayerDefn( hLayerIn );
     layerGeomType = OGR_FD_GetGeomType( hFDefnIn );
     printf("GeometryType: %s\n", OGRGeometryTypeToName( layerGeomType ));

     OGR_FD_Release( hFDefnIn );
     OGR_DS_Destroy( hDSin );
}

$ gcc -g -o testogr testogr.c  -I/usr/local/include/gdal -lgdal -lm

It reports GeometryType correctly and then segvs :(

woodbri at mappy:~/work$ gdb ./testogr
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu"...
(gdb) run
Starting program: /home/woodbri/work/testogr
[Thread debugging using libthread_db enabled]
warning: Lowest section in /usr/lib/libicudata.so.38 is .hash at 
0000000000000120
GeometryType: Line String
[New Thread 0x7f361a0bc710 (LWP 30585)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f361a0bc710 (LWP 30585)]
0x0000000000000031 in ?? ()
(gdb) bt
#0  0x0000000000000031 in ?? ()
#1  0x00007f3619a2f190 in ~OGRShapeLayer (this=0x605a40)
     at ogrshapelayer.cpp:105
#2  0x00007f3619a2c63f in ~OGRShapeDataSource (this=0x604330)
     at ogrshapedatasource.cpp:62
#3  0x0000000000400958 in main () at testogr.c:19