illumos gate

# powertop 
OpenIndiana PowerTOP version 1.2   (C) 2009 Intel Corporation

Collecting data for 5.00 second(s) 
# echo $?
1
#

Simple dtracing showed we are exiting here in pt_display_setup():

203    if (event_lines > 0) {
204        sw[SW_EVENTS] = subwin(stdscr, event_lines, win_cols, pos_y, 0);
205    } else {
206        (void) printf("\\n\\nPowerTOP cannot run in such a small " 
207            "terminal window, please resize it.\\n\\n");
208        exit(EXIT_FAILURE);
209    }

The problem is that pt_display_cleanup() needs to be called before printf() in a similar way as it is done in pt_display_get_size():

124static void
125pt_display_get_size(void)
126{
127    getmaxyx(stdscr, win_rows, win_cols);
128
129    if (win_rows < PT_MIN_ROWS || win_cols < PT_MIN_COLS) {
130        pt_display_cleanup();
131        (void) printf("\\n\\nPowerTOP cannot run in such a small " 
132            "terminal window. Please resize it.\\n\\n");
133        exit(EXIT_FAILURE);
134    }
135}