Fl_Text_Buffer().append() (or text(char*) causes segmentation fault

[pbeeson]

When I download the Ubuntu source for fltk1.1.9 and compile it myself, my program works just fine. Also version 1.1.5 (dapper) works fine with my code. But, the pre-built libfltk.so that is installed by default segfaults.

Simple test case:

  disp=new Fl_Text_Display(0, y, w, h);
  disp->buffer(new Fl_Text_Buffer(256));
  std::cerr <<"HERE: "<<disp->buffer()->text()<<std::endl;
  disp->buffer()->text("foo");

Segfaults on the text(char*). You could substitute an append("foo") on the last line and watch it segfault there too.

[pbeeson (pbeeson)]

I just noted that it works with Dapper's 1.1.7 but not with 1.1.8
pre-built Ubuntu and that the 1.1.9-x don't work (hardy, intrepid, and
jaunty).

ldd did show that my libfltk.so.1.1 has many fewer dependencies, so this
may be the culprit. I don't have lots of time to track this down, but I
found it strange that 1) this was really easy to fix by compiling my own
version and 2) that no one else has reported such a bug previously.

Patrick Beeson
http://www.cs.utexas.edu/~pbeeson