C ++运行时符号查找错误，ubuntu(C++ runtime symbol lookup error, ubuntu)

C ++运行时符号查找错误，ubuntu(C++ runtime symbol lookup error, ubuntu)

我有一个C ++函数doSth，它将从类“canMsg”调用函数“checkFrame”，如下所示

#include "canMsg.h" void doSth(char* canFrame){ map<int, double> returnedData; CANMsg canMsg; std::cout<<canFrame <<endl; canMsg.checkFrame(canFrame); }

在编译期间我没有收到任何错误，但是当我运行它时，它执行std::cout<<canFrame <<endl; 通过创建错误声明和崩溃

undefined symbol: _ZNSaIcEC1Ev, version GLIBCXX_3.4

任何想法如何解决这一问题？

I have a C++ function doSth that will call a function "checkFrame" from a class "canMsg" as shown below

#include "canMsg.h" void doSth(char* canFrame){ map<int, double> returnedData; CANMsg canMsg; std::cout<<canFrame <<endl; canMsg.checkFrame(canFrame); }

During compilation I receive no error, but when I run it, it executes std::cout<<canFrame <<endl; statement and crashes by creating an error

undefined symbol: _ZNSaIcEC1Ev, version GLIBCXX_3.4

Any ideas how to fix this?

最满意答案

当依赖库（其中_ZNSaIcEC1Ev i​​d已定义）被编译为您当前拥有的其他版本的GLIBC（更新版本或更旧版本）时，可能会发生此错误。

尝试使用当前环境重新编译该库。

你也可以添加一个很好的开关到您的应用程序的LDFLAGS：-Wl， - no-undefined。 然后你可以在编译时看到任何未定义的符号（不确定它是否对你的情况有帮助）。

Thanks for the replies. The error was due to my attempt to return a locally declared pointer. After I changed the local pointer variable to a static, it works perfect. The basic idea is C++ does not advocate to return the address of a local variable to outside of the function.

Look this for more information.