[英]static function declaration inside a block
static
when applied to functions means that the function has internal linkage . 应用于函数时
static
意味着该函数具有内部链接 。 ie it can be accessed within this file only. 即它只能在此文件中访问。 In other words it has file-scope .
换句话说,它具有文件范围 。 This linkage applies irrespective of whether you declare a function inside another function or outside of all of them.
无论您是在另一个函数内部还是在所有函数之外声明函数,此链接都适用。
Now, if you apply the static
keyword to a function declaration inside another block/function, semantically speaking , you are trying to restrict the scope of the function to that particular block/function, which goes against the language rules that state that static
functions, irrespective of their place of declaration, shall have file-scope. 现在,如果将
static
关键字应用于另一个块/函数内的函数声明 ,从语义上讲 ,您试图将函数的范围限制为该特定的块/函数,这违反了声明static
函数的语言规则,不论其声明地点如何,均应有档案范围。
And hence, the standard might be prohibiting such a declaration. 因此,标准可能会禁止这样的声明。
PS : Footnote 30
in 6.2.3
in the latest C11 standard states- PS :最新C11标准
6.2.3
中的脚注30
A function declaration can contain the storage-class specifier static only if it is at file scope;
只有当函数声明位于文件范围时,它才能包含存储类说明符static ;
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