If the DISPLAY env variable is not set properly, i.e.
if the X server connection cannot be opened, it seems that
fl_initialize() kills the application instead of returning
NULL (i.e. an error).
Tested with 0.87 under Linux and Solaris.
Here is the test program:
==============================================================
#include "forms.h"
int main(int argc, char *argv[])
{
Display *display = fl_initialize(&argc, argv, "FormDemo", 0, 0);
printf("display = %d\n", (int)display);
return 0;
}
==============================================================
Try:
$ setenv DISPLAY localhost:0
$ foo
display = 134536352
$ setenv DISPLAY badname:0
$ foo
_X11TransSocketINETConnect: Can't get address for badname
foo: Can't open display badname:0--Invalid argument
$
A workaround is to check that XOpenDisplay (NULL)
does not return NULL before calling fl_initialize...
but I think that fl_initialize should return NULL,
not kill the application.
-t
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