{"record":{"id":"4feaccf31d44b8ca","repo":"eclipse-vertx/vert.x","slug":"compilation-failed","errorCode":null,"errorMessage":"Compilation failed!","messagePattern":"Compilation failed!","errorType":"exception","errorClass":"RuntimeException","httpStatus":null,"severity":"error","filePath":"vertx-core/src/main/java/io/vertx/core/impl/verticle/CompilingClassLoader.java","lineNumber":86,"sourceCode":"      // TODO - this needs to be fixed so it can compile classes from the classpath otherwise can't include\n      // other .java resources from other modules\n\n      JavaFileObject javaFile = standardFileManager.getJavaFileForInput(StandardLocation.SOURCE_PATH, resolveMainClassName(), Kind.SOURCE);\n      JavaCompiler.CompilationTask task = javaCompiler.getTask(null, fileManager, diagnostics, null, null, Collections.singleton(javaFile));\n      boolean valid = task.call();\n      if (valid) {\n        for (Diagnostic<?> d : diagnostics.getDiagnostics()) {\n          String code = d.getCode();\n          if (code == null || (!code.startsWith(\"compiler.warn.annotation.method.not.found\") &&\n              !\"compiler.warn.proc.processor.incompatible.source.version\".equals(code))) {\n            log.info(d);\n          }\n        }\n      } else {\n        for (Diagnostic<?> d : diagnostics.getDiagnostics()) {\n          log.warn(d);\n        }\n        throw new RuntimeException(\"Compilation failed!\");\n      }\n    } catch (Exception e) {\n      throw new RuntimeException(\"Compilation failed\", e);\n    }\n  }\n\n  public String resolveMainClassName() {\n    return javaSourceContext.getClassName();\n  }\n\n  @Override\n  protected Class<?> findClass(String name) throws ClassNotFoundException {\n    byte[] bytecode = getClassBytes(name);\n    if (bytecode == null) {\n      throw new ClassNotFoundException(name);\n    }\n    return defineClass(name, bytecode, 0, bytecode.length);\n  }","sourceCodeStart":68,"sourceCodeEnd":104,"githubUrl":"https://github.com/eclipse-vertx/vert.x/blob/fb308bd8c3f12c79f4ae89bef67fadf6c80d036e/vertx-core/src/main/java/io/vertx/core/impl/verticle/CompilingClassLoader.java#L68-L104","documentation":"Dynamic compilation failure in CompilingClassLoader: the JavaCompiler task reported failure for the verticle source. The 'Compilation failed!' RuntimeException signals the overall task.call() result; compiler diagnostics collected during the run are logged (warnings may be filtered) and identify the source errors.","triggerScenarios":"Thrown at vertx-core/src/main/java/io/vertx/core/impl/verticle/CompilingClassLoader.java:86 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Fix the reported Java compile errors in the verticle source","Check diagnostics logged during compilation for the exact lines","Pre-compile and deploy bytecode if runtime compilation is not required"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"fb308bd8c3f12c79f4ae89bef67fadf6c80d036e","analyzedAt":"2026-09-06T11:37:12.241Z","contentChangedAt":"2026-09-06T11:37:12.241Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}