c - C 是否具有函数参数名称的 __func__ 功能？

Question

“C”标准是否支持类似于 __func__ 的函数参数名称？

Answer 1

不，C99 标准有以下内容:

6.10.8 Predefined macro names

The following macro names shall be defined by the implementation:

__DATE__ 
__FILE__ 
__LINE__ 
__STDC__ 
__STDC_HOSTED__ 
__STDC_MB_MIGHT_NEQ_WC__ 
__STDC_VERSION__ 
__TIME__ 

The following macro names are conditionally defined by the implementation:

__STDC_IEC_559__ 
__STDC_IEC_559_COMPLEX__ 
__STDC_ISO_10646__ 

6.4.2.2 Predefined identifiers

The identifier __func__ shall be implicitly declared by the translator as if, immediately following the opening brace of each function definition, the declaration

     static const char __func__[] = "function-name";

出现了，其中 function-name 是词法封闭函数的名称。63)

gcc 添加了一些 extensions ，正如我想象的其他编译器所做的那样。