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$ libtool --mode=execute gdb gaussian-blur
...
(gdb) r
Starting program: /home/fdeutsch/dev/opencl/gocl/gocl/examples/.libs/lt-gaussian-blur 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
clReleaseContext (context=0x0) at ocl_icd_loader_gen.c:71
71    RETURN(((struct _cl_context *)context)->dispatch->clReleaseContext(context));
(gdb) bt
#0  clReleaseContext (context=0x0) at ocl_icd_loader_gen.c:71
#1  0x00007ffff7df3929 in gocl_context_finalize (obj=0x8f9170) at gocl-context.c:236
#2  0x0000003114c1441b in g_object_unref (_object=0x8f9170) at gobject.c:3024
#3  0x0000003115456670 in g_initable_new_valist (object_type=<optimized out>, 
    first_property_name=first_property_name@entry=0x7ffff7df7d47 "device-type", 
    var_args=var_args@entry=0x7fffffffdc98, cancellable=cancellable@entry=0x0, 
    error=error@entry=0x7ffff7ffb468 <last_error>) at ginitable.c:233
#4  0x000000311545670c in g_initable_new (object_type=<optimized out>, 
    cancellable=cancellable@entry=0x0, error=error@entry=0x7ffff7ffb468 <last_error>, 
    first_property_name=first_property_name@entry=0x7ffff7df7d47 "device-type") at ginitable.c:149
#5  0x00007ffff7df3a1c in gocl_context_gpu_new_sync (gl_context=gl_context@entry=0x6324c0, 
    gl_display=0x624000) at gocl-context.c:352
#6  0x0000000000401da7 in main (argc=<optimized out>, argv=<optimized out>) at gaussian-blur.c:168
(gdb) 

<kraiskil> fabiand, fwiw, I got gocl to compile, and it segfaults when calling clReleaseContext
<kraiskil>  - when running on AMD opencl...
<fabiand> ahhh
<fabiand> :)
<kraiskil> and context==0, so this does smell like a gocl issue.

make[3]: Entering directory `/builddir/build/BUILD/gocl-0.2.0/gocl'
  CC       libgocl-0.2_la-gocl-error.lo
  CC       libgocl-0.2_la-gocl-context.lo
  CC       libgocl-0.2_la-gocl-device.lo
  CC       libgocl-0.2_la-gocl-buffer.lo
gocl-error.c: In function 'gocl_error_check_opencl':
gocl-error.c:111:20: error: format not a string literal and no format arguments [-Werror=format-security]
                    get_error_code_description (err_code));
                    ^
gocl-error.c: In function 'gocl_error_check_opencl_internal':
gocl-error.c:130:20: error: format not a string literal and no format arguments [-Werror=format-security]
                    get_error_code_description (err_code));
                    ^
cc1: some warnings being treated as errors
make[3]: *** [libgocl-0.2_la-gocl-error.lo] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory `/builddir/build/BUILD/gocl-0.2.0/gocl'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/builddir/build/BUILD/gocl-0.2.0/gocl'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/builddir/build/BUILD/gocl-0.2.0'
make: *** [all] Error 2
error: Bad exit status from /var/tmp/rpm-tmp.FRc6sc (%build)
RPM build errors:
    Bad exit status from /var/tmp/rpm-tmp.FRc6sc (%build)
Child return code was: 1

$ gjs /usr/share/doc/gocl-0.1.4/helloWorld.js 
    JS ERROR: !!!   Exception was: TypeError: Gocl.Context.get_default_cpu is not a constructor
    JS ERROR: !!!     message = '"Gocl.Context.get_default_cpu is not a constructor"'
    JS ERROR: !!!     fileName = '"/usr/share/doc/gocl-0.1.4/helloWorld.js"'
    JS ERROR: !!!     lineNumber = '24'
    JS ERROR: !!!     stack = '"@/usr/share/doc/gocl-0.1.4/helloWorld.js:24
"'
TypeError: Gocl.Context.get_default_cpu is not a constructor