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        (已知)VC12 中的编译器错误?

        时间:2023-07-02

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                  本文介绍了(已知)VC12 中的编译器错误?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  此程序在使用 VC12(在 Visual Studio 2013 RTM 中)编译时[1] 导致崩溃(在所有构建配置中),而实际上不应该:

                  This program, when compiled with VC12 (in Visual Studio 2013 RTM)[1] leads to a crash (in all build configurations), when really it shouldn't:

                  #include <string>
                  
                  void foo(std::string const& oops = {})
                  {
                  }
                  
                  int main()
                  {
                      foo();
                  }
                  

                  我知道可能有两个无声的不良代码生成错误:

                  I know of two silent bad codegen bugs that might be related:

                  • https://connect.microsoft.com/VisualStudio/feedback/details/800364/initializer-list-calls-object-destructor-twice
                  • http://connect.microsoft.com/VisualStudio/feedback/details/800104/

                  老实说,我认为这些是不同的.有谁知道

                  Honestly I think these are different, though. Does anyone know

                  1. 是否存在针对此连接的主动跟踪错误
                  2. 是否有解决方法(或对导致此错误的情况的明确描述,以便我们可以在我们的代码库中查找/避免它)?

                  <小时>

                  [1] 只需使用 C++ 控制台应用程序向导"创建一个空项目.为简单起见,禁用预编译头并保留所有默认值:http://i.stack.imgur.com/rrrnV.png


                  [1] Just create an empty project using the C++ Console Application 'wizard'. For simplicity, disable precompiled headers and leave all defaults: http://i.stack.imgur.com/rrrnV.png

                  推荐答案

                  一个活动问题已在 11 月.发布的示例代码是:

                  An active issue was posted back in November. The sample code posted was:

                  Compile and run following code in VS2013
                  
                  #include <string>
                  
                  void f(std::string s = {}) {
                  }
                  
                  int main(int argc, char* argv[]) {
                      f();
                      return 0;
                  }
                  

                  微软已确认该错误.

                  那里似乎没有发布解决方法.编辑解决方法很容易基于避免列表初始化语法:

                  There doesn't seem to be a work-around posted there. Edit Workarounds can easily be based on avoiding the list-initializer syntax:

                  void f(std::string s = "");
                  void f(std::string s = std::string());
                  void f(std::string s = std::string {});
                  

                  或者只是老式的(如果你不介意引入重载):

                  Or just the old-fashioned (if you don't mind introducing overloads):

                  void f(std::string s);
                  void f() { f(std::string()); }
                  

                  这篇关于(已知)VC12 中的编译器错误?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

                  上一篇:即使找到接口,CoCreateInstance 也返回 E_NOINTERFACE 下一篇:如何从根目录包含 stdafx.h?

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