{"record":{"id":"553b5c1883355d87","repo":"Yalantis/uCrop","slug":"cimg-appname-math-parser-cimg-s-s-s-too","errorCode":null,"errorMessage":"[cimg_appname_math_parser] CImg<%s>::%s: %s: Too %s arguments specified, in expression '%s'.","messagePattern":"\\[cimg_appname_math_parser\\] CImg<(.+?)>::(.+?): (.+?): Too (.+?) arguments specified, in expression '(.+?)'\\.","errorType":"exception","errorClass":"CImgArgumentException","httpStatus":null,"severity":"error","filePath":"ucrop/src/main/jni/CImg.h","lineNumber":20749,"sourceCode":"                  CImg<ulongT>::vector(*opcode,opcode[1],opcode[2],opcode[3],opcode[4],\n                                       opcode[5],opcode[6],opcode[7],0,opcode[8],opcode[9],opcode[10],~0U,\n                                       _cimg_mp_boundary).move_to(opcode);\n                  arg1 = 9; break;\n                case 12 :\n                  CImg<ulongT>::vector(*opcode,opcode[1],opcode[2],opcode[3],opcode[4],\n                                       opcode[5],opcode[6],opcode[7],0,opcode[8],opcode[9],opcode[10],~0U,\n                                       opcode[11]).move_to(opcode);\n                  arg1 = 9; break;\n                case 13 :\n                  CImg<ulongT>::vector(*opcode,opcode[1],opcode[2],opcode[3],opcode[4],\n                                       opcode[5],opcode[6],opcode[7],opcode[8],opcode[9],opcode[10],opcode[11],\n                                       opcode[12],_cimg_mp_boundary).move_to(opcode);\n                  arg1 = 10; break;\n                case 14 :\n                  arg1 = 10; break;\n                default : // Error -> too few or too much arguments\n                  _cimg_mp_strerr;\n                  throw CImgArgumentException(\"[\" cimg_appname \"_math_parser] \"\n                                              \"CImg<%s>::%s: %s: Too %s arguments specified, \"\n                                              \"in expression '%s'.\",\n                                              pixel_type(),_cimg_mp_calling_function,s_op,\n                                              opcode._height<5?\"few\":\"much\",s0);\n                }\n\n                _cimg_mp_check_const_scalar((unsigned int)opcode[1],2,3); // w\n                opcode[1] = (ulongT)mem[opcode[1]];\n                _cimg_mp_check_const_scalar((unsigned int)opcode[2],3,3); // h\n                opcode[2] = (ulongT)mem[opcode[2]];\n                _cimg_mp_check_const_scalar((unsigned int)opcode[3],4,3); // d\n                opcode[3] = (ulongT)mem[opcode[3]];\n                _cimg_mp_check_const_scalar((unsigned int)opcode[4],5,3); // s\n                opcode[4] = (ulongT)mem[opcode[4]];\n                p1 = size((unsigned int)opcode[0]);\n                arg2 = (unsigned int)opcode[1];\n                arg3 = (unsigned int)opcode[2];\n                arg4 = (unsigned int)opcode[3];","sourceCodeStart":20731,"sourceCodeEnd":20767,"githubUrl":"https://github.com/Yalantis/uCrop/blob/f788b534b48c144edf786c8cddbf0e029e637804/ucrop/src/main/jni/CImg.h#L20731-L20767","documentation":"This is the generic argument-count check in the CImg math parser's opcode dispatcher: a named function/opcode was invoked with a number of arguments outside its accepted range. The `default:` arm of a switch over argument counts reports 'Too few' when opcode._height<5 and 'Too much' otherwise. It means the expression used a supported function but with the wrong arity.","triggerScenarios":"Writing an expression that calls a math-parser function with the wrong number of comma-separated arguments, e.g. a function expecting exactly 4+ arguments called with 1-3, or one with a fixed maximum called with extra trailing arguments (e.g. stray commas `f(a,b,,)` adding empty slots).","commonSituations":"Hand-written G'MIC/CImg expressions with typos, extra commas from copy-paste, or arguments left empty; version changes where a function gained or lost optional parameters so an old expression now has the wrong count.","solutions":["Count the arguments in the failing expression against the documented signature of the function being called.","Remove stray/extra commas or duplicated arguments (they create empty or surplus opcode slots).","Update the expression for the current library version if the function signature changed (check CImg changelog).","Split complex expressions and test the offending function call in isolation with the correct arity."],"exampleFix":"// before\nfill(median(v,)) // stray comma -> 'Too much arguments'\n// after\nfill(median(v,3))","handlingStrategy":"validation","validationCode":"// count arguments before invoking\nsize_t nargs = std::count(expr.begin(), expr.end(), ',') + 1;\nif (nargs < 4) throw std::runtime_error(\"function requires at least 4 arguments\");","typeGuard":null,"tryCatchPattern":"try {\n  img.fill(expr.c_str());\n} catch (const CImgArgumentException& e) {\n  std::cerr << \"expression error: \" << e.what() << std::endl;\n}","preventionTips":["Count commas/arguments against the documented function signature","Avoid stray or trailing commas in expressions","Re-validate expressions after upgrading CImg/G'MIC","Test complex expressions incrementally"],"tags":["cimg","math-parser","argument-count","expression"],"backgroundTag":"missing-required-argument","analyzedSha":"f788b534b48c144edf786c8cddbf0e029e637804","analyzedAt":"2026-09-08T08:36:04.887Z","contentChangedAt":"2026-09-08T08:36:04.887Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}