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container: Fix NULL pointer dereference 

Reset the workspace layout to the output's default only if the workspace
is actually attached to an output.

Fixes #5762
This commit is contained in:
mwenzkowski 2020-10-24 17:27:38 +02:00 committed by Brian Ashworth
parent d06c1ac1e9
commit 13a67da614
1 changed files with 3 additions and 1 deletions
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4
sway/tree/container.c
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@ -1358,7 +1358,9 @@ void container_detach(struct sway_container *child) {
// We may have removed the last tiling child from the workspace. If the
// workspace layout was e.g. tabbed, then at this point it may be just
// H[]. So, reset it to the default (e.g. T[]) for next time.
if (!old_workspace->tiling->length) {
// But if we are evacuating a workspace with only sticky floating
// containers, the workspace will already be detached from the output.
if (old_workspace->output && !old_workspace->tiling->length) {
old_workspace->layout =
output_get_default_layout(old_workspace->output);
}