gcc/testsuite/gcc.dg/pr47381-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 typedef unsigned long ulg;
   5 long block_start;
   6 typedef unsigned char uch;
   7 extern uch window[];
   8  unsigned strstart;
   9 ulg flush_block (char *buf, ulg stored_len, int eof);
  10 ulg deflate()
  11 {
  12     return flush_block(block_start >= 0L ? (char*)&window[(unsigned)block_start] : (char*)((void *)0), (long)strstart - block_start, (1));
  13 }