Graphic problems
Knobi der Rechnerschrat
XBR2D96D at DDATHD21.BITNET
Fri Mar 10 02:08:45 AEST 1989
Hallo everybody,
we just encountered a strange graphic problem after upgrading
a) from a 4D70G to a 4D70/GT and after that
b) from some IRIX 3.1 prerelease to IRIX 3.1C.
Before this action the following (highly simplified) code worked just fine:
main()
winopen("1.st");
fork()
if parent: do some work
else if child: winopen("2.nd") and some more work
After the double-upgrade we get a core-dump from the second winopen. The call-
stack reads like this:
gl_init_wstate( .... ) glinit.c line 148
winope( ..... ) winstuff.c line 538
winopen (....) ginit.c line 98
I would like to know whether this is a bug in the software, or a violation
of the window-manager rules, or a feature of the GT-hardware. A small test-
program, which reproduces the described behaviour, is included an can be
compiled and linked using
cc test.c -o test -lgl -g
We would really appreciate a fast response, because this problem is quite
disturbing to our work.
Regards
Martin Knoblauch
TH-Darmstadt
Physical Chemistry 1
Petersenstrasse 20
D-6100 Darmstadt, FRG
BITNET: <XBR2D96D at DDATHD21>
-----------------------------test.c-------------------------------------------
#include <stdio.h>
#include <gl.h>
main()
{
int id1,id2,f_id;
id1 = winopen("first");
f_id = fork();
if( f_id == -1) { printf(" no success in fork \n ");
exit(0); }
if( f_id != 0) { printf(" child = %d \n",f_id);
while(TRUE);
exit(0); }
printf(" now new \n");
id2 = winopen("second");
printf(" kicker ??? \n");
ringbell();
while(TRUE);
}
-----------------------------------end of test.c------------------------------
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