sndfile = test_open_file_or_die (filename, SFM_READ, &sfinfo, SF_TRUE, __LINE__) ;
check_log_buffer_or_die (sndfile, __LINE__) ;
sndfile = test_open_file_or_die (filename, SFM_READ, &sfinfo, SF_TRUE, __LINE__) ;
check_log_buffer_or_die (sndfile, __LINE__) ;