{"record":{"id":"671bb293bff8cdc6","repo":"emilk/egui","slug":"memory-broken-no-area-for-the-current-viewport","errorCode":null,"errorMessage":"Memory broken: no area for the current viewport","messagePattern":"Memory broken: no area for the current viewport","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/egui/src/memory/mod.rs","lineNumber":833,"sourceCode":"        // Clean up abandoned popups.\n        if let Some(popup) = self.popups.get_mut(&self.viewport_id) {\n            if popup.open_this_frame {\n                popup.open_this_frame = false;\n            } else {\n                self.popups.remove(&self.viewport_id);\n            }\n        }\n    }\n\n    pub(crate) fn set_viewport_id(&mut self, viewport_id: ViewportId) {\n        self.viewport_id = viewport_id;\n    }\n\n    /// Access memory of the [`Area`](crate::containers::area::Area)s, such as `Window`s.\n    pub fn areas(&self) -> &Areas {\n        self.areas\n            .get(&self.viewport_id)\n            .expect(\"Memory broken: no area for the current viewport\")\n    }\n\n    /// Access memory of the [`Area`](crate::containers::area::Area)s, such as `Window`s.\n    pub fn areas_mut(&mut self) -> &mut Areas {\n        self.areas.entry(self.viewport_id).or_default()\n    }\n\n    /// Top-most layer at the given position.\n    pub fn layer_id_at(&self, pos: Pos2) -> Option<LayerId> {\n        let layer_id = self.areas().layer_id_at(pos, &self.to_global)?;\n        if self.is_above_modal_layer(layer_id) {\n            Some(layer_id)\n        } else {\n            self.top_modal_layer()\n        }\n    }\n\n    /// An iterator over all layers. Back-to-front, top is last.","sourceCodeStart":815,"sourceCodeEnd":851,"githubUrl":"https://github.com/emilk/egui/blob/1a9d2af9efde043883036a6c0fc52423df435398/crates/egui/src/memory/mod.rs#L815-L851","documentation":"Error \"Memory broken: no area for the current viewport\" thrown in emilk/egui.","triggerScenarios":"Thrown at crates/egui/src/memory/mod.rs:829 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["egui memory was persisted inconsistently (missing area for the current viewport): clear egui persistence storage / Memory to regenerate state.","If you manipulate Memory manually, ensure every viewport has its area entry."],"exampleFix":"ctx.memory_mut(|mem| *mem = Default::default()); // reset broken memory","handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"1a9d2af9efde043883036a6c0fc52423df435398","analyzedAt":"2026-08-19T12:39:57.743Z","contentChangedAt":"2026-08-19T12:39:57.743Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}