Main branch core dump in fillbetween.dem

[Lars H. <lhe...@us...>]

 I often use the "dumb" terminal with make check as some form of benchmark:

$ time GNUTERM=dumb make check >/dev/null 2>&1

 This fails with the current cvs head:

...
          @@@@
         @@  @@
        @gnuplot
      @@  ****  @@
     @@***    ***@@
    @**          **@
  @@**            **@@
  @** $$$      $$$ **@
   *  $ $      $ $  *
  *   $$   >    $$   *
  *         >        *
  *         >        *
  *   *      >   *   *
  **  **        **  **
   *    **    **    *
   **    gnuplot   **
     *    ****    *
      ***      ***
         ******


Press Return to continuemake[2]: *** [check-noninteractive] Error 139
make[2]: Leaving directory `/home/lhecking/src/cvs/gnuplot/demo'
make[1]: *** [check-am] Error 2

 A recompile with -g later, I get a core cump and the following backtrace:

#0  0x00000000 in ?? ()
#1  0x00059864 in finish_filled_curve (points=4, corners=0xffbfe178, 
    plot=0x1d6960) at graphics.c:1810
#2  0x0005d1f4 in fill_between (x1=10, yl1=280, yu1=16.733201000000001, 
    x2=20, yl2=191, yu2=13.820275000000001, plot=0x1d6960) at graphics.c:2089
#3  0x0005b494 in plot_betweencurves (plot=0x1d6960) at graphics.c:1998
#4  0x00056ef0 in do_plot (plots=0x1d6960, pcount=3) at graphics.c:1512
#5  0x000ab114 in eval_plots () at plot2d.c:1986
#6  0x000a0b70 in plotrequest () at plot2d.c:248
#7  0x00027820 in plot_command () at command.c:1045
#8  0x00025d04 in command () at command.c:511
#9  0x000255c4 in do_line () at command.c:370
#10 0x00090fd8 in load_file (fp=0x1cab18, name=0x1d0600 "fillbetween.dem", 
    can_do_args=0 '\0') at misc.c:269
#11 0x0002720c in load_command () at command.c:871
#12 0x00025d04 in command () at command.c:511
#13 0x000255c4 in do_line () at command.c:370
#14 0x00090fd8 in load_file (fp=0x1cab08, name=0xffbff1b0 "all.dem", 
    can_do_args=0 '\0') at misc.c:269
#15 0x0009f448 in main (argc=1, argv=0xffbff020) at plot.c:622

 It works fine with the x11 terminal. I can reproduce this on Solaris and
 Linux, so it's not an OS specific issue.

 To recreate it non-interactively:

$ cd demo
$ GNUPLOT_DIRVER_DIR=`pwd`/../src GNUTERM=dumb ../src/gnuplot
...
Terminal type set to 'dumb'
gnuplot> lo "fillbetween.dem"
Segmentation Fault (core dumped)
$ 

 Btw. have we officially ditched the requirement that filenames must be
 8+3 chars max?