{"record":{"id":"2003fa0b65c0adf1","repo":"DioxusLabs/dioxus","slug":"unsupported-reference-type","errorCode":null,"errorMessage":"Unsupported reference type","messagePattern":"Unsupported reference type","errorType":"validation","errorClass":"syn::Error","httpStatus":null,"severity":"error","filePath":"packages/manganis/manganis-macro/src/ffi.rs","lineNumber":119,"sourceCode":"                        _ => {\n                            // Assume it's an opaque type reference\n                            return Ok(ForeignType::OpaqueRef(segment.ident.clone()));\n                        }\n                    }\n                }\n                Err(syn::Error::new(ty.span(), \"Unsupported type path\"))\n            }\n            Type::Reference(type_ref) => {\n                if let Type::Path(path) = &*type_ref.elem {\n                    if path.path.is_ident(\"str\") {\n                        return Ok(ForeignType::StrRef);\n                    }\n                    // Check for &OpaqueType\n                    if path.path.segments.len() == 1 {\n                        return Ok(ForeignType::OpaqueRef(path.path.segments[0].ident.clone()));\n                    }\n                }\n                Err(syn::Error::new(ty.span(), \"Unsupported reference type\"))\n            }\n            Type::Tuple(tuple) if tuple.elems.is_empty() => Ok(ForeignType::Unit),\n            _ => Err(syn::Error::new(ty.span(), \"Unsupported type\")),\n        }\n    }\n\n    /// Get the JNI signature for this type\n    fn jni_signature(&self) -> String {\n        match self {\n            ForeignType::Bool => \"Z\".into(),\n            ForeignType::I8 => \"B\".into(),\n            ForeignType::I16 => \"S\".into(),\n            ForeignType::I32 => \"I\".into(),\n            ForeignType::I64 => \"J\".into(),\n            ForeignType::U8 => \"B\".into(), // JNI doesn't have unsigned, use signed\n            ForeignType::U16 => \"S\".into(),\n            ForeignType::U32 => \"I\".into(),\n            ForeignType::U64 => \"J\".into(),","sourceCodeStart":101,"sourceCodeEnd":137,"githubUrl":"https://github.com/DioxusLabs/dioxus/blob/393d190a801ccb441d41923e232289b4f8a5c669/packages/manganis/manganis-macro/src/ffi.rs#L101-L137","documentation":"Error \"Unsupported reference type\" thrown in DioxusLabs/dioxus.","triggerScenarios":"Thrown at packages/manganis/manganis-macro/src/ffi.rs:119 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"393d190a801ccb441d41923e232289b4f8a5c669","analyzedAt":"2026-08-16T11:27:45.815Z","schemaVersion":2},"datasetVersion":"2026-08-16T13:17:31.715Z"}