1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -g" } */
       3  
       4  #include <stdlib.h>
       5  #include <stdio.h>
       6  #include <stdarg.h>
       7  
       8  #define DEBUG_BUFFER_SIZE 80
       9  int unifi_debug = 5;
      10  
      11  void
      12  unifi_trace (void* ospriv, int level, const char *fmt, ...)
      13  {
      14     static char s[DEBUG_BUFFER_SIZE];
      15     va_list args;
      16     unsigned int len;
      17  
      18     if (!ospriv)
      19       return;
      20  
      21     if (unifi_debug >= level)
      22       {
      23         va_start (args, fmt);
      24         len = vsnprintf (&(s)[0], (DEBUG_BUFFER_SIZE), fmt, args);
      25         va_end (args);
      26  
      27         if (len >= DEBUG_BUFFER_SIZE)
      28  	 {
      29  	   (s)[DEBUG_BUFFER_SIZE - 2] = '\n';
      30  	   (s)[DEBUG_BUFFER_SIZE - 1] = 0;
      31  	 }
      32  
      33         printf ("%s", s);
      34       }
      35  }
      36