C 的 inline function

[Copy to clipboard] [ - ]CODE:#include <stdio.h>

inline void test(void)
{



}

int main()
{

   

    return 0;

}
gcc -std=c99 -o inline inline.c   // 為什麼我加入 -std=c99 會出現下面警告訊息, inline 不是C 99 嗎?

inline.c:4: warning: C99 inline functions are not supported; using GNU89
inline.c:4: warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute


謝謝

---

static inline

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参考一下

http://www.greenend.org.uk/rjk/2003/03/inline.html



一下是c99的

  6.7.4 Function specifiers
  Syntax
1        function-specifier:
                 inline
  Constraints
2 Function specifiers shall be used smilieid="44" border="0" alt="" /> The extent to which such suggestions are effective is
  implementation-defined.119)
6 Any function with internal linkage can be an inline function. For a function with external
  linkage, the following restrictions apply: If a function is declared with an inline
  112                                     Language                                      §6.7.4
  WG14/N1124                          Committee Draft — May 6, 2005                    ISO/IEC 9899:TC2
  function specifier, then it shall also be defined in the same translation unit. If all of the
  file scope declarations for a function in a translation unit include the inline function
  specifier without extern, then the definition in that translation unit is an inline
  definition. An inline definition does not provide an external definition for the function,
  and does not forbid an external definition in another translation unit. An inline definition
  provides an alternative to an external definition, which a translator may use to implement
  any call to the function in the same translation unit. It is unspecified whether a call to the
  function uses the inline definition or the external definition.120)
  EXAMPLE The declaration of an inline function with external linkage can result in either an external
7
  definition, or a definition available for use smilieid="44" border="0" alt="" /> By using, for example, an alternative to the usual function call mechanism, such as ‘‘inline TAG标签 : the inline function an definition to in external