一个assert的写法

 1 char assert_buf[512];
 2 int assert_buf_len;
 3 
 4 #ifdef XXX_DEBUG
 5 #define assert(expr, ...)  6 do{     7     if ((!(expr)))  8     { 9         char *str = __FILE__; 10         int i; 11         for(i=strlen(str);i>=0;i--) if(str[i]==‘\\‘||str[i]==‘/‘) break; 12         printf("ASSERTION FAILED (%s) at: %s:%d:: ", #expr, str+i+1, __LINE__);13         assert_buf_len = snprintf(assert_buf, sizeof(assert_buf)-1, __VA_ARGS__);14         printf("%s\r\n", assert_buf);15     }16 } while (0)
17 #else
18 #define assert(expr, ...) do{ 19 }while(0)
20 #endif