我在用gcc4编译一个C程序时出现如下警告，请问大家是怎么回事？
In file included from test-sqlist.c:7: In file incl
In file included from test-sqlist.c:7: In file incl
阅读背景：
隐式声明与内建函数不兼容，是怎么回事？
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