ns3,c,尽管被用作’typeid’的操作数,但仍将评估具有副作用的表达式

2019年7月27日 287次阅读

发生了一些奇怪的事情：我没有修改我的ns3 c代码的任何部分,并且运行编译这是出现的错误：

[ 815/1681] cxx: scratch/initial-scenario.cc -> build/scratch/initial-scenario.cc.1.o
In file included from ../scratch/initial-scenario.cc:3:
In file included from ./ns3/core-module.h:18:
In file included from ./ns3/calendar-scheduler.h:24:
In file included from ./ns3/scheduler.h:25:
In file included from ./ns3/object.h:29:
In file included from ./ns3/object-base.h:23:
In file included from ./ns3/type-id.h:25:
In file included from ./ns3/trace-source-accessor.h:24:
./ns3/callback.h:1244:54: error: expression with side effects will be evaluated despite being used as an operand to 'typeid' [-Werror,-Wpotentially-evaluated-expression]
                        "got=" << Demangle ( typeid (*other).name () ) << std::endl <<
                                                     ^
./ns3/fatal-error.h:98:32: note: expanded from macro 'NS_FATAL_ERROR'
      std::cerr << "msg=\"" << msg << "\", ";           \
                               ^
1 error generated.

我不明白为什么会出现这个错误.奇怪的是,我在两个不同的目录中使用两个相似的代码,错误出现在两者中,但我没有修改任何东西.可能是编译器的问题？有什么建议吗？

最佳答案 我按照此处的建议解决了问题：
https://www.nsnam.org/wiki/Ns-3.24-errata

该问题与Xcode 7.0的更新有关

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