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如果是定义一个全局的map，会出现如下core：

Program received signal SIGSEGV, Segmentation fault.

0x00007ffff7b449ea in std::_Rb_tree_decrement(std::_Rb_tree_node_base*) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6

(gdb) bt

#0  0x00007ffff7b449ea in std::_Rb_tree_decrement(std::_Rb_tree_node_base*) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6

#1  0x0000000000404071 in std::_Rb_tree_iterator<std::pair<int const, int> >::operator– (this=0x7fffffffe330) at /usr/include/c++/4.6/bits/stl_tree.h:203

#2  0x00000000004037b2 in std::_Rb_tree<int, std::pair<int const, int>, std::_Select1st<std::pair<int const, int> >, std::less<int>, std::allocator<std::pair<int const, int> > >::_M_insert_unique (this=0x607280, __v=…) at /usr/include/c++/4.6/bits/stl_tree.h:1287

#3  0x000000000040331b in std::map<int, int, std::less<int>, std::allocator<std::pair<int const, int> > >::insert (this=0x607280, __x=…)

at /usr/include/c++/4.6/bits/stl_map.h:518

#4  0x0000000000402818 in ArgsParser::register_arg (param_name=…, arg_info=0x6080a0) at ./args_parser.cpp:130

#5  0x00000000004017d6 in util::CArgInfo<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >::CArgInfo (this=0x6080a0, param_name=…)

at /data1/mooon/run/include/util/args_parser.h:307

#6  0x00000000004016b3 in util::CStringArgInfo<std::basic_string<char, std::char_traits<char>, std::allocator<char> > >::CStringArgInfo (this=0x6080a0,

optional=false, param_name=…, default_value=…, help_string=…) at /data1/mooon/run/include/util/args_parser.h:392

#7  0x000000000040143d in __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at x.cpp:7

#8  0x0000000000401523 in _GLOBAL__sub_I__ZN10ArgsParser2ipE () at x.cpp:12

#9  0x0000000000404a8d in __libc_csu_init ()

#10 0x00007ffff7528700 in __libc_start_main (main=0x401374 <main()>, argc=1, ubp_av=0x7fffffffe6a8, init=0x404a30 <__libc_csu_init>, fini=<optimized out>,

rtld_fini=<optimized out>, stack_end=0x7fffffffe698) at libc-start.c:185

#11 0x00000000004012b9 in _start ()

问题弄清楚了，是因为全局变量相互依赖的问题，被依赖的晚于初始化造成的（如全局对象A依赖于全局对象B，而B晚于A被构造出来）这和编译器版本有关，因为之前一直未发现这个问题。解决办法是，将被依赖的改成局部静态变量，通过函数方式引用，如：

原来为：static string g_info;

改成：

string& info()

{

static string s_info;


// 局部静态对象，只有在使用到时才会被构造出来，由于是在全局对象构造中被调用到，所以不存在多线程问题，因为这发生在main函数之前，其它线程还没有创建出来，如果这个时候就有线程了，那就考虑是否设计合理。

return s_info;

}

问题就可以解决了。