{"record":{"id":"3fa6bb3d8a7681e5","repo":"mudler/LocalAI","slug":"qwen3-tts-cpp-error-synthesize-failed-rc-d","errorCode":null,"errorMessage":"[qwen3-tts-cpp] ERROR: synthesize failed (rc=%d): %s\\n","messagePattern":"\\[qwen3-tts-cpp\\] ERROR: synthesize failed \\(rc=(.+?)\\): (.+?)\\\\n","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/go/qwen3-tts-cpp/cpp/goqwen3ttscpp.cpp","lineNumber":120,"sourceCode":"    if (out_n)\n        *out_n = 0;\n    if (!g_ctx) {\n        fprintf(stderr, \"[qwen3-tts-cpp] ERROR: model not loaded\\n\");\n        return nullptr;\n    }\n    if (!text || text[0] == '\\0') {\n        fprintf(stderr, \"[qwen3-tts-cpp] ERROR: text is required\\n\");\n        return nullptr;\n    }\n    qt_tts_params tp;\n    fill_params(&tp, text, lang, instruct, speaker, ref_samples, ref_n,\n                ref_text, seed, temperature, top_k, top_p, repetition_penalty,\n                max_new_tokens);\n\n    qt_audio out = {0};\n    enum qt_status rc = qt_synthesize(g_ctx, &tp, &out);\n    if (rc != QT_STATUS_OK || out.n_samples <= 0 || !out.samples) {\n        fprintf(stderr, \"[qwen3-tts-cpp] ERROR: synthesize failed (rc=%d): %s\\n\",\n                (int)rc, qt_last_error());\n        qt_audio_free(&out);\n        return nullptr;\n    }\n\n    // Copy into a plain malloc buffer the Go side frees via qt3_pcm_free.\n    size_t bytes = (size_t)out.n_samples * sizeof(float);\n    float *buf = (float *)malloc(bytes);\n    if (!buf) {\n        fprintf(stderr, \"[qwen3-tts-cpp] ERROR: malloc(%zu) failed\\n\", bytes);\n        qt_audio_free(&out);\n        return nullptr;\n    }\n    memcpy(buf, out.samples, bytes);\n    if (out_n)\n        *out_n = out.n_samples;\n    qt_audio_free(&out);\n    return buf;","sourceCodeStart":102,"sourceCodeEnd":138,"githubUrl":"https://github.com/mudler/LocalAI/blob/44413a9d06bf5bc52ce088ba8ca74e5a2e8bee26/backend/go/qwen3-tts-cpp/cpp/goqwen3ttscpp.cpp#L102-L138","documentation":"qt_synthesize returned a non-zero status. Guard: check model-loaded state and input length limits before synthesis; propagate the rc and error string to the gRPC response instead of crashing.","triggerScenarios":"Thrown at backend/go/qwen3-tts-cpp/cpp/goqwen3ttscpp.cpp:120 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Inspect the rc code and detail message for the root cause of the synthesize failure.","Verify model/codec compatibility and available memory.","Retry with shorter text to rule out length-related failures."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"44413a9d06bf5bc52ce088ba8ca74e5a2e8bee26","analyzedAt":"2026-08-15T10:13:50.291Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}