1 /* _GL_UNUSED_PARAMETER is a marker that can be appended to function parameter 2 declarations for parameters that are not used. This helps to reduce 3 warnings, such as from GCC -Wunused-parameter. The syntax is as follows: 4 type param _GL_UNUSED_PARAMETER 5 or more generally 6 param_decl _GL_UNUSED_PARAMETER 7 For example: 8 int param _GL_UNUSED_PARAMETER 9 int *(*param)(void) _GL_UNUSED_PARAMETER 10 Other possible, but obscure and discouraged syntaxes: 11 int _GL_UNUSED_PARAMETER *(*param)(void) 12 _GL_UNUSED_PARAMETER int *(*param)(void) 13 */ 14 #ifndef _GL_UNUSED_PARAMETER 15 # if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) 16 # define _GL_UNUSED_PARAMETER __attribute__ ((__unused__)) 17 # else 18 # define _GL_UNUSED_PARAMETER 19 # endif 20 #endif 21