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Asked: 2026-05-11T03:36:30+00:00

I’m porting a small C++ console application from windows to linux, GCC 4.3.2. When

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I’m porting a small C++ console application from windows to linux, GCC 4.3.2. When compiling I get strange error that I’m unable to solve.

Labels.cpp: In function ‘void DumpSymbols()’: Labels.cpp:68: error: invalid conversion from ‘int’ to ‘std::_Ios_Openmode’ Labels.cpp:68: error:   initializing argument 2 of ‘std::basic_ofstream<_CharT, _Traits>::basic_ofstream(const char*, std::_Ios_Openmode) [with _CharT = char, _Traits = std::char_traits<char>]’

Labels.cpp:

#include <string> #include <fstream> #include <iostream> #include 'stdafx.h' using namespace std;  #include 'Opcodes.h' #include 'Labels.h'   Label LABELS[1024]; int labelcounter = 0; int OffsetCounter = 0;  void AddLabel(string name, int line) {         LABELS[labelcounter].name = name;         LABELS[labelcounter].line = line;         LABELS[labelcounter].offset = OffsetCounter;         printf('Adding label: %s[0x%X]\n', name.c_str(), OffsetCounter);         labelcounter++; }  bool IsLabel(string name) {         for(int i=0;i<labelcounter;i++)         {                 if (LABELS[i].name.compare(name) == 0)                 {                         return true;                 }         }         return false; }  int GetOffset(string lbl) {         for(int i=0;i<labelcounter;i++)         {                 if (LABELS[i].name.compare(lbl) == 0)                 {                         printf('Refers to label '%s':0x%X\n', lbl.c_str(), LABELS[i].offset);                         return LABELS[i].offset;                 }         }         return -1; }  void DumpSymbols() {         ofstream mapfile('symbols.map', ios::out|ios::beg);  //this line causes error          //mapfile.write(         char numbuf1[32];         itoa(labelcounter, numbuf1, 10);         mapfile.write((string(numbuf1) + '\n').c_str(), strlen(numbuf1)+1);          for(int i=0;i<labelcounter;i++)         {                 string dump;                 char numbuf[32];                 itoa(LABELS[i].offset, numbuf, 10);                 dump = string(LABELS[i].name) + '\t' + string(numbuf) + '\n';                 mapfile.write(dump.c_str(), strlen(dump.c_str()));         } }

stdafx.h:

#pragma once #include <stdio.h> #include <string.h> #include <stdlib.h> #include <cstdlib>

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1 Answer

  1. Just remove ‘|ios::beg’:

    ofstream mapfile(‘symbols.map’, ios::out);

    It’s type is ios_base::seekdir, which is not an opening mode; it’s for seeking to a position. You’ll automatically be at the beginning anyway.

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