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tree/workspace: fix crash on dragging container to workspace edge

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Problem: when dragging a parent container to the right of its children,
sway crashes, the calculated insertion index could exceed the list
bounds. The move logic would compute an index based on the pre-removal
list state.

Solution: Clamp the insertion index to [0, length].
This commit is contained in:
Furkan Sahin 2026-02-01 21:53:06 -05:00
parent b081eba05d
commit 9d2e7d378f
1 changed files with 2 additions and 0 deletions
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2
sway/tree/workspace.c
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@ -842,6 +842,8 @@ struct sway_container *workspace_insert_tiling(struct sway_workspace *workspace,
if (config->default_layout != L_NONE) { if (config->default_layout != L_NONE) {
con = container_split(con, config->default_layout); con = container_split(con, config->default_layout);
} }
if (index < 0) index = 0;
else if (index > workspace->tiling->length) index = workspace->tiling->length;
workspace_insert_tiling_direct(workspace, con, index); workspace_insert_tiling_direct(workspace, con, index);
return con; return con;
} }