{"record":{"id":"2f5b0b66855e46da","repo":"pxb1988/dex2jar","slug":"while-accept-code-in-method-s-08x","errorCode":null,"errorMessage":"while accept code in method:[%s] @%08x","messagePattern":"while accept code in method:\\[(.+?)\\] @%08x","errorType":"exception","errorClass":"DexException","httpStatus":null,"severity":"error","filePath":"dex-reader/src/main/java/com/googlecode/d2j/reader/DexFileReader.java","lineNumber":1067,"sourceCode":"                        } catch (Exception e) {\r\n                            throw new DexException(e, \"while accept parameter annotation in method:%s.\",\r\n                                    method.toString());\r\n                        }\r\n                    }\r\n                }\r\n                if (code_off != 0) {\r\n                    boolean keep = true;\r\n                    if (0 != (SKIP_CODE & config)) {\r\n                        keep = 0 != (KEEP_CLINIT & config) && method.getName().equals(\"<clinit>\");\r\n                    }\r\n                    if(keep) {\r\n                        DexCodeVisitor dcv = dmv.visitCode();\r\n                        if (dcv != null) {\r\n                            try {\r\n                                acceptCode(code_off, dcv, config, (method_access_flags & DexConstants.ACC_STATIC) != 0,\r\n                                        method);\r\n                            } catch (Exception e) {\r\n                                throw new DexException(e, \"while accept code in method:[%s] @%08x\", method.toString(),\r\n                                        code_off);\r\n                            }\r\n                        }\r\n                    }\r\n                }\r\n                dmv.visitEnd();\r\n            }\r\n        } catch (Exception e) {\r\n            throw new DexException(e, \"while accept method:[%s]\", method.toString());\r\n        }\r\n\r\n        return method_id;\r\n    }\r\n\r\n    private void read_annotation_set_ref_list(int parameter_annotation_offset, DexMethodVisitor dmv) {\r\n        ByteBuffer in = annotationSetRefListIn;\r\n        in.position(parameter_annotation_offset);\r\n\r","sourceCodeStart":1049,"sourceCodeEnd":1085,"githubUrl":"https://github.com/pxb1988/dex2jar/blob/b5bda4fb4935ae8b3869b422454ae3b3896c7bc1/dex-reader/src/main/java/com/googlecode/d2j/reader/DexFileReader.java#L1049-L1085","documentation":"DexException thrown when decoding a method's bytecode body fails. acceptCode() parses insns, try/catch blocks, debug info and labels for the method at code_off, and any exception inside is re-wrapped with the method name and code offset (@%08x) for diagnosis.","triggerScenarios":"accept() encounters code_off != 0 and calls acceptCode(); the code item references invalid registers, unknown opcodes, truncated insns arrays, or malformed try/catch/debug structures.","commonSituations":"Converting dex files built by non-standard compilers, multidex with corrupted entries, dexes that use newer opcodes than this d2j version understands, or deliberately malformed files.","solutions":["Read the cause and the @%08x offset to locate the failing code item in the dex","Upgrade dex-translator/d2j to a version supporting the dex/opcode version in use","Validate the dex with a checker (dexlint/dexdump) before conversion","Catch DexException around accept() to skip the offending method and continue"],"exampleFix":"// before\nreader.accept(dmv);\n// after\ntry {\n    reader.accept(dmv);\n} catch (DexException e) {\n    System.err.println(\"bad code: \" + e.getMessage());\n}","handlingStrategy":"try-catch","validationCode":"// Pre-check with external validator\nProcess p = Runtime.getRuntime().exec(new String[]{\"dexdump\", \"-d\", dexPath});\n// fail early if dexdump reports malformed code items","typeGuard":null,"tryCatchPattern":"try {\n    reader.accept(dmv);\n} catch (DexException e) {\n    logger.warn(\"bad method code: \" + e.getMessage());\n}","preventionTips":["Match d2j version to the dex/opcode version of the app","Avoid converting dexes modified by packers","Extract classes.dex fully (no truncation) before parsing"],"tags":["dex","bytecode","opcode","dex-file-reader"],"backgroundTag":"invalid-argument-format","analyzedSha":"b5bda4fb4935ae8b3869b422454ae3b3896c7bc1","analyzedAt":"2026-09-08T00:44:01.258Z","contentChangedAt":"2026-09-08T00:44:01.258Z","schemaVersion":2},"datasetVersion":"2026-09-16T09:17:16.951Z"}