Method error

deps/opencv/modules/core/src/gpumat.cpp:774–788

// Error handling

void cv::gpu::error(const char *error_string, const char *file, const int line, const char *func)
{
    int code = CV_GpuApiCallError;

    if (uncaught_exception())
    {
        const char* errorStr = cvErrorStr(code);
        const char* function = func ? func : "unknown function";

        cerr << "OpenCV Error: " << errorStr << "(" << error_string << ") in " << function << ", file " << file << ", line " << line;
        cerr.flush();
    }
    else
        cv::error( cv::Exception(code, error_string, func, file, line) );
}