Merge pull request #968 from nouiz/fix_crash_verbose

theano/sandbox/cuda/cuda_ndarray.cu

@@ -4501,6 +4501,8 @@ void fprint_CudaNdarray(FILE * fd, const CudaNdarray *self)
         fprintf(fd, "%i\t", CudaNdarray_HOST_STRIDES(self)[i]);
     }
 
+    if (self->dev_structure)
+    {
         int data=0;
         fprintf(fd, "\n\tDEV_DIMS:      ");
         for (int i = 0; i < self->nd; ++i)
@@ -4519,6 +4521,11 @@ void fprint_CudaNdarray(FILE * fd, const CudaNdarray *self)
             fprintf(fd, "%i \t", data);
         }
         fprintf(fd, "\n");
+    }
+    else
+    {
+        fprintf(fd, "\n\tdev_structure not allocated\n");
+    }
 }
 
 /*