包括 tr1::shared_ptr

Question

我已在类文件中包含 #include ， 当我尝试编译我的类时，出现以下错误：

> In file included from account.h:16:0:
/usr/include/c++/4.4.3/tr1/shared_ptr.h:61:46: error: '_Lock_policy' has not been declared
/usr/include/c++/4.4.3/tr1/shared_ptr.h:63:30: error: expected template-name before '<' token
/usr/include/c++/4.4.3/tr1/shared_ptr.h:63:30: error: expected '{' before '<' token
/usr/include/c++/4.4.3/tr1/shared_ptr.h:63:30: error: expected unqualified-id before '<' token
/usr/include/c++/4.4.3/tr1/shared_ptr.h:89:12: error: '_Lock_policy' has not been declared
/usr/include/c++/4.4.3/tr1/shared_ptr.h:89:31: error: '__default_lock_policy' was not declared in this scope
/usr/include/c++/4.4.3/tr1/shared_ptr.h:100:12: error: '_Lock_policy' has not been declared
/usr/include/c++/4.4.3/tr1/shared_ptr.h:100:31: error: '__default_lock_policy' was not declared in this scope
/usr/include/c++/4.4.3/tr1/shared_ptr.h:209:7: error: '_Sp_counted_base' does not name a type
/usr/include/c++/4.4.3/tr1/shared_ptr.h: In constructor 'std::tr1::__shared_count<_Lp>::__shared_count()':

有谁知道到底是什么原因导致抛出此错误？

Answer 1

我添加了 #include 并解决了该问题。

Answer 2

从 GCC 4.3 开始，您应该使用：

#include <memory>

...作为 gcc 文档中推荐。