環境：

Visual studio 2017

boost庫編譯選項： msvc141,multi,win64,debug,shared

demo工程設置: debug, win32

問題源:

《Beyond the C++ STL: an introduction to boost》書上Part I, Library 3， checked_delete章節

如果把 deleter.h, deleter.cpp, to_be_deleted.h三個文件內容整合到一個文件里，

編譯后會提示 "?warning C4150: 刪除指向不完整“to_be_deleted”類型的指針；沒有調用析構函數"

運行后調用?deleter::do_it? 時會間接調用到?~to_be_deleted()。

調用?deleter::delete_it? 時則不會間接調用到?~to_be_deleted()。

最后調用完?~to_be_deleted()程序結束時才報一個異常錯誤。

很奇怪的地方啊！看來是編譯器工作方式的不同導致的吧。。。

// 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)]; 所有代碼放入一個文件，這句居然能編譯通過?? }// 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); }

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