[Boost-bugs] [Boost C++ Libraries] #13338: checked_delete问题

Subject: [Boost-bugs] [Boost C++ Libraries] #13338: checked_delete问题
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2017-12-13 08:50:05

#13338: checked_delete问题
------------------------------+---------------------------
 Reporter:  linzhongzi@…      |      Owner:  No-Maintainer
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  utility
  Version:  Boost 1.65.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+---------------------------
 环境：
 Visual studio 2017
 boost库编译选项： msvc141,multi,win64,debug,shared
 demo工程设置: debug, win32

 问题源:
 《Beyond the C++ STL: an introduction to boost》书上Part I, Library 3，
 checked_deleteç« èŠ‚
 如果把 deleter.h, deleter.cpp, to_be_deleted.h三个文件内容整合到一个文件里
 ，
 编译后会提示 " warning C4150: åˆ é™¤æŒ‡å‘ä¸å®Œæ•´â€œto_be_deleted”类型的指针；没
 有调用析构函数"
 运行后调用 deleter::do_it  时会间接调用到 ~to_be_deleted()。
 调用 deleter::delete_it  时则不会间接调用到 ~to_be_deleted()。
 最后调用完 ~to_be_deleted()程序结束时才报一个异常错误。
 很奇怪的地方啊！看来是编译器工作方式的不同导致的吧。。。

 code like this:

 // deleter.h
 class to_be_deleted;
 class deleter {
 public:
     void delete_it(to_be_deleted* p);
     void do_it(to_be_deleted* p);
 };

 // deleter.cpp
 //#include "deleter.h"
 #include "boost/checked_delete.hpp"
 void deleter::delete_it(to_be_deleted* p) {
     delete p;
 }
 void deleter::do_it(to_be_deleted* p) {
     boost::checked_delete(p);  // typedef char
 type_must_be_complete[sizeof(T)]; æ‰€æœ‰ä»£ç æ”¾å…¥ä¸€ä¸ªæ–‡ä»¶ï¼Œè¿™å¥å±…ç„¶èƒ½ç¼–è¯‘é€šè¿‡
 ??
 }

 // to_be_deleted.h
 #include <iostream>
 class to_be_deleted
 {
 public:
     ~to_be_deleted() {
         std::cout <<
             "I'd like to say important things here, please.";
     }
 };

 // Test application
 //#include "deleter.h"
 //#include "to_be_deleted.h"
 int main() {
     to_be_deleted* p = new to_be_deleted;
     deleter d;
     d.delete_it(p);
     d.do_it(p);
 }

-- 
Ticket URL: <https://svn.boost.org/trac10/boost/ticket/13338>
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