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Fix segfault when FB_ID isn't set

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This would previously result in a crash:

    ==169727==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000028 (pc 0x7f3e0c4d7dc7 bp 0x7ffc97f8aff0 sp 0x7ffc97f8afc0 T0)
    ==169727==The signal is caused by a READ memory access.
    ==169727==Hint: address points to the zero page.
        #0 0x7f3e0c4d7dc6 in layer_update_priority ../subprojects/libliftoff/layer.c:152
        #1 0x7f3e0c4d3a4c in update_layers_priority ../subprojects/libliftoff/alloc.c:573
        #2 0x7f3e0c4d3d7f in liftoff_output_apply ../subprojects/libliftoff/alloc.c:590
        …
This commit is contained in:
Simon Ser 2019-12-19 17:37:18 +01:00
parent 657a9917c5
commit 799f694587
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GPG key ID: 0FDE7BE0E88F5E48
1 changed files with 1 additions and 1 deletions
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2
layer.c
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@ -149,7 +149,7 @@ void layer_update_priority(struct liftoff_layer *layer, bool make_current) {
/* TODO: also bump priority when updating other
* properties */
prop = layer_get_property(layer, "FB_ID");
if (prop->changed) {
if (prop != NULL && prop->changed) {
layer->pending_priority++;
}