Re: [ns] [bug] xgraph crashes when output is to a file

[Andrei Gurtov <gurtov@cs.Helsinki.FI>]

It helps - thanks!

Andrei

On Thu, 15 Nov 2001, Di-Fa Chang wrote:

> apply this patch:
>
> diff -u draw.c xgraph-12.1/draw.c
> --- draw.c	Thu Nov 15 13:01:57 2001
> +++ xgraph-12.1/draw.c	Fri Dec  3 15:16:42 1999
> @@ -50,6 +50,7 @@
>  {
>      /* Figure out the transformation constants */
>      if (TransformCompute(win_info)) {
> +
>  	/* Draw the title */
>  	DrawTitle(win_info);
>
> @@ -848,8 +849,7 @@
>              thisList = thisList->next;
>  	}
>      }
> -    if (disp)
> -	XFlush (disp);
> +    XFlush (disp);
>  }
>
>
> @@ -889,8 +889,7 @@
>
>      /* PW Suggests we Flush and set first */
>      theDelay = PM_INT("DelayValue")*100000;
> -    if (disp)
> -	XFlush(disp);
> +    XFlush(disp);
>      if (PM_BOOL("Animate")) sleep(1);
>      set_mark_flags(&markFlag, &pixelMarks, &bigPixel, &colorMark);
>      for (idx = 0; idx < MAXSETS; idx++) {
> @@ -1102,8 +1101,7 @@
>  				    lineWidth, L_VAR,
>  				    LINESTYLE(1), PIXVALUE(2));
>  	      }
> -	      if (disp)
> -                XFlush (disp);
> +              XFlush (disp);
>  	      for (X_idx=1;X_idx<theDelay;X_idx++);
>                X_idx = StoreIDX;
>  	      if ((thisList->numPoints > 0) && (!noLines) && (X_idx > 0))
> {
> @@ -1147,8 +1145,7 @@
>  				    LINESTYLE(1), PIXVALUE(2));
>  	    }
>            }
> -    if (disp)
> -	XFlush (disp);
> +    XFlush (disp);
>  }
>
>
>
>
> On Thu, 15 Nov 2001, Andrei Gurtov wrote:
>
> >
> > [Bug Report]
> >
> > -----------------------------
> > Category:  Other
> > Package:   other xgraph 12.1
> > OS:        Linux 2.2.14-5.0
> > Environment Variables:
> > LD_LIBRARY_PATH=/usr/lib-elf:/opt/RH5.2/lib:/usr/local/src/ns-allinone-2.1b8
> > /otcl-1.0a7:/usr/local/src/ns-allinone-2.1b8/lib
> > TCL_LIBRARY=/usr/local/src/ns-allinone-2.1b8/tcl8.3.2/library
> > TK_LIBRARY=
> >
> >
> > -----------------------------
> > Description:
> >
> > Description of Problem:
> >
> > xgraph crashes for all output types (ps, tgif,..)
> > when file output option is used. If output is saved to a file
> > from GUI, everything is fine.
> >
> > How Easily Reproducible:
> > (e.g. every time, intermittent, once only, etc.)
> >
> > every time
> >
> > Steps to Reproduce:
> > (describe the minimal set of steps necessary to trigger the bug)
> > 1. xgraph -device ps -o tmp.ps rcv.xgr
> > 2.
> > 3.
> >
> >
> > Actual Results:
> > (describe what the application did after performing the above steps)
> >
> > Segmentation fault (core dumped)
> > tmp.ps has PS funtions, but no actual data
> >
> > Expected Results:
> > (describe what the application should have done, were the bug not present)
> >
> > Saved output in tmp.ps
> >
> > Additional Information:
> > (e.g. URLs to your script, detailed output files, packet trace, etc. if they
> > are big files.)
> >
> > Core was generated by `xgraph -device ps -o tmp.ps rcv.xgr'
> > 0x40053e44 in XFlush () from /usr/X11R6/lib/libX11.so.6
> >
>