RRSetChanged (immediately above) was immune to screens with no master,
but RRTellChanged was not:
Thread 1 "X" received signal SIGSEGV, Segmentation fault.
RRTellChanged (pScreen=<optimized out>) at ../../randr/randr.c:576
576 mastersp = rrGetScrPriv(master);
(gdb) bt
#0 RRTellChanged (pScreen=<optimized out>) at ../../randr/randr.c:576
#1 0x000055555566f1e9 in RRNoticePropertyChange (value=0x555555bfbf28,
property=70, output=0x555555bfef10) at ../../randr/rrproperty.c:153
#2 RRChangeOutputProperty (output=output@entry=0x555555bfef10,
property=<optimized out>, type=type@entry=19, format=format@entry=32,
mode=<optimized out>, mode@entry=0, len=len@entry=1, value=0x7fffffffe77c,
sendevent=1, pending=0)
at ../../randr/rrproperty.c:263
#3 0x000055555566dba5 in RROutputSetNonDesktop
(output=output@entry=0x555555bfef10, nonDesktop=nonDesktop@entry=0) at
../../randr/rroutput.c:333
...
Reported-by: Michel Dänzer <[email protected]>
Signed-off-by: Adam Jackson <[email protected]>
---
randr/randr.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/randr/randr.c b/randr/randr.c
index 339ad3ece..feb54bcc8 100644
--- a/randr/randr.c
+++ b/randr/randr.c
@@ -602,6 +602,8 @@ RRTellChanged(ScreenPtr pScreen)
if (pScreen->isGPU) {
master = pScreen->current_master;
+ if (!master)
+ return;
mastersp = rrGetScrPriv(master);
}
else {
--
2.16.2
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