C ++ 0X draft N3225在 2函数说明符：

C++0X draft N3225 says in 7.1.2 Function specifiers:

• 语句2：内联函数


• 第4条：内联函数应在其使用的每个转换单元中定义，完全相同的定义在每种情况下。

• clause 2: A function declaration with an inline specifier declares an inline function
• clause 4: An inline function shall be defined in every translation unit in which it is odr-used and shall have exactly the same definition in every case.

; clang错误，但仍有一个（slim）的机会，在C ++ 03中的东西是不同的。

So, to me, it looks like gcc is right & clang wrong, but there's still a (slim) chance that things were (are?) different in C++03..