problem with EZBin in swarm-1.3.1 under linux using tcl/tk8.0p2,blt2.4f

[Rick Riolo]

I have found a problem, perhaps a bug, with EZBin crashing in an app made
with swarm-1.3.1, under Redhat 5.2, but using the tcl/tk8.0p2
and blt-2.4f.  The crash happens as follows:

-----
address@hidden UM-HeatbugsPlus]$  ./heatbugsPlus
about to do unhappyBin createEnd...
(Tcl -eval:) unknown color name ""
    (processing "-foreground" option)
    invoked from within
".w0x81d26d8.w0x81d26a0 element configure 13 -foreground """
while evaluating: .w0x81d26d8.w0x81d26a0 element configure 13 -foreground ""
Segmentation fault (core dumped)
------

>From the following fragment of source:

------
  // Create a EZBin widget for display of distribution of unhappiness
  unhappyBin = [EZBin createBegin: globalZone];
  [unhappyBin setGraphics: 1]; [unhappyBin setFileOutput: 0]; 
  [unhappyBin setTitle: "unHappinessDistribution"];
  SET_WINDOW_GEOMETRY_RECORD_NAME ( unhappyBin );
  [unhappyBin setAxisLabelsX: "unHappiness" Y: "Count of Bugs"];
  [unhappyBin setBinNum: numUnhappyBins];
  [unhappyBin setLowerBound: 0.0];
  [unhappyBin setUpperBound: 1.0]; 
  [unhappyBin setCollection: [heatbugModelSwarm getHeatbugList]];
  [unhappyBin setProbedSelector: M(getUnhappiness)];
fprintf(stderr,"about to do unhappyBin createEnd...\n");
  unhappyBin = [unhappyBin createEnd];
fprintf(stderr,"Done with unhappyBin createEnd...\n");
-----------

When I added this line:
  [unhappyBin setMonoColorBars: 1];
before that createEnd, it works fine.

Just fyi, a bt shows:

--------
Program received signal SIGSEGV, Segmentation fault.
0x40350b1e in _IO_vfprintf (s=0xbfff76b8, 
    format=0x40069000 "%s element configure %s -foreground \"%s\"", 
ap=0xbffff750)
    at vfprintf.c:1080
vfprintf.c:1080: No such file or directory.

(gdb) bt
#0  0x40350b1e in _IO_vfprintf (s=0xbfff76b8, 
    format=0x40069000 "%s element configure %s -foreground \"%s\"", 
ap=0xbffff750)
    at vfprintf.c:1080
#1  0x4035b083 in _IO_vsprintf (
    string=0xbfff7730 ".w0x81d6740.w0x81d6d20 element configure 14 -foreground 
\"\"", 
    format=0x40069000 "%s element configure %s -foreground \"%s\"", 
args=0xbffff744)
    at iovsprintf.c:48
#2  0x40079aa2 in _i_TclInterp__eval_ ()
#3  0x4005b5f1 in _i_Histogram__setColors_ ()
#4  0x40017f6a in _i_EZBin__createEnd ()
#5  0x805190c in _i_HeatbugObserverSwarm__buildObjectsArgC_ArgV_ ()
#6  0x804f7d0 in main ()
--------

Note also that this same app works fine *without* the setMonoColorBars: 1 
when compiled under HPUX 10.20, using   tcl8.0p2, tk8.0p2 and blt-2.4.

- r

Rick Riolo                           address@hidden
Program for Study of Complex Systems (PSCS)
4477 Randall Lab                
University of Michigan         Ann Arbor MI 48109-1120
Phone: 734 763 3323                  Fax: 734 763 9267
http://www.pscs.umich.edu/PEOPLE/rlr-home.html


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