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-rw-r--r--render/wlr_renderer.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/render/wlr_renderer.c b/render/wlr_renderer.c
index 523079a8..36837eda 100644
--- a/render/wlr_renderer.c
+++ b/render/wlr_renderer.c
@@ -424,6 +424,8 @@ out:
}
struct wlr_renderer *renderer_autocreate_with_drm_fd(int drm_fd) {
+ assert(drm_fd >= 0);
+
return renderer_autocreate(NULL, drm_fd);
}