summaryrefslogtreecommitdiff
path: root/gcc/testsuite/gcc.c-torture/execute/enum-2.c
blob: dd6f640861a463215da698014fe394bfe20c59f3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
/* Copyright (C) 2000 Free Software Foundation */
/* by Alexandre Oliva  <aoliva@redhat.com> */

enum foo { FOO, BAR };

/* Even though the underlying type of an enum is unspecified, the type
   of enumeration constants is explicitly defined as int (6.4.4.3/2 in
   the C99 Standard).  Therefore, `i' must not be promoted to
   `unsigned' in the comparison below; we must exit the loop when it
   becomes negative. */

int
main ()
{
  int i;
  for (i = BAR; i >= FOO; --i)
    if (i == -1)
      abort ();

  exit (0);
}