cstdio和cstddef在std :: size_t上发生冲突

Question

TEST.CPP

#include <cstdio>
#include <cstddef>
using std::size_t;

编译：

 >  g++ -c test.cpp -o test.o     
In file included from /.../include/stdio.h:75:0,
                 from /.../gcc/include/c++/cstdio:42,
                 from test.cpp:1:
test.cpp:3:12: error: expected unqualified-id before ‘int’
 using std::size_t;
            ^
test.cpp:3:12: error: expected ‘;’ before ‘int’
test.cpp:3:12: error: declaration does not declare anything [-fpermissive]

如果我只删除#include <cstdio>，一切正常 但如果我只删除#include <cstddef>，则会弹出相同的错误 如果我删除了两个：

 >  g++ -c test.cpp -o test.o    
test.cpp:1:12: error: ‘std::size_t’ has not been declared
 using std::size_t;
            ^

我需要包含两个库，以及要使用的std::size_t 在这种情况下我该怎么办？我应该添加一些CXXFLAGS吗？

我的gcc版本是4.8.5。

 >  g++ --version 
g++ (GCC) 4.8.5
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

更新：

我已经尝试过系统的默认gcc：/usr/bin/g++，错误消失了 所以它应该是anaconda的gcc责任。我将向小组提出一个问题 谢谢大家。