gcc/testsuite/gcc.dg/pr37289.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fdump-tree-original" } */
   3
   4 void f(unsigned long x);
   5
   6 void g(long x)
   7 {
   8   f((unsigned long)(-1-x)+1);
   9 }
  10
  11 /* Make sure we do not lose the conversion.  */
  12
  13 /* { dg-final { scan-tree-dump "-\\\(long unsigned int\\\) x" "original" } } */