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'operator ='的歧義重載

[英]Ambiguous overload for 'operator='

我正在嘗試從Festival項目中編譯一些C++代碼。 編譯Festival ,出現以下錯誤:

Making in directory ./src ...
Making in directory src/arch ...
Making in directory src/arch/festival ...
Making in directory src/modules ...
Making in directory src/modules/rxp ...
Making in directory src/modules/clunits ...
Making in directory src/modules/clustergen ...
Making in directory src/modules/MultiSyn ...
Making in directory src/modules/MultiSyn/inst_tmpl ...
Making in directory src/modules/hts_engine ...
Making in directory src/modules/diphone ...
gcc -c -g -I../include -I../../../src/include -I../../../../speech_tools/include di_io.cc
di_io.cc: In function ‘void load_index(DIPHONE_DATABASE*)’:
di_io.cc:111: error: ambiguous overload for ‘operator=’ in ‘line = EST_TokenStream::get_upto_eoln()()’
../../../../speech_tools/include/EST_String.h:477: note: candidates are: EST_String& EST_String::operator=(const char*) <near match>
../../../../speech_tools/include/EST_String.h:479: note:                 EST_String& EST_String::operator=(char) <near match>
../../../../speech_tools/include/EST_String.h:481: note:                 EST_String& EST_String::operator=(const EST_String&) <near match>
make[3]: *** [di_io.o] Error 1
make[2]: *** [diphone] Error 2
make[1]: *** [modules] Error 2
make: *** [src] Error 2  

發生錯誤的函數:

static void load_index(DIPHONE_DATABASE *database)
{
    EST_TokenStream ts;
    int i;
    EST_String line;

    if (ts.open(database->index_file) == -1)
    {
    cerr << "Diphone: Can't open file " << database->index_file << endl;
    festival_error();
    }

    for (i=0; (!ts.eof()) && (i<database->ndiphs);)
    {
    line = ts.get_upto_eoln();   //this is di_io.cc:111
    if ((line.length() > 0) && (line[0] != ';'))
    {
        EST_TokenStream ls;
        ls.open_string(line);
        database->indx[i]->diph = wstrdup(ls.get().string());
        database->indx[i]->file = wstrdup(ls.get().string());
        database->indx[i]->beg = atof(ls.get().string());
        database->indx[i]->mid = atof(ls.get().string());
        database->indx[i]->end = atof(ls.get().string());
        ls.close();
        i++;
    }
    }

    if (i == database->ndiphs)
    {
    cerr << "Diphone: too many diphones in DB" << endl;
    festival_error();
    }

    database->nindex = i;
    database->ndiphs = i;

    ts.close();
}

如何擺脫以上錯誤?

get_upto_eoln返回什么?

您可以在EST_String類中具有operator=的確切重載。

或者,您可以顯式地使用它來創建一個字符串,例如:

line = std::string(ts.get_upto_eoln());

代替

 line = ts.get_upto_eoln();

我假設您使用的非標准類型來自speech-tools庫( 在此處記錄) ,因為這是我在搜索類名時發現的。 如果那是錯誤的,請更新問題以指出它們的來源。

我還要假設錯誤行( di_io.cc 111 di_io.cc )是這樣的:

line = ts.get_upto_eoln();

因為那是我看到的唯一一個可能導致該錯誤消息的代碼; 再次,如果是另一行,請更新問題。

EST_TokenStream::get_upto_eoln返回EST_Token 您正在嘗試將其分配給其他類型的變量( EST_String ),並且沒有隱式轉換。

您可以使用其string函數將函數結果轉換為EST_String

line = ts.get_upto_eoln().string();

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