sdcc/support/regression/tests/gcc-torture-execute-enum-2.c

   1 /*
   2    enum-2.c from the execute part of the gcc torture tests.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 #ifdef __SDCC
   8 #pragma std_c99
   9 #endif
  10
  11 /* Copyright (C) 2000 Free Software Foundation */
  12 /* by Alexandre Oliva  <aoliva@redhat.com> */
  13
  14 enum foo { FOO, BAR };
  15
  16 /* Even though the underlying type of an enum is unspecified, the type
  17    of enumeration constants is explicitly defined as int (6.4.4.3/2 in
  18    the C99 Standard).  Therefore, `i' must not be promoted to
  19    `unsigned' in the comparison below; we must exit the loop when it
  20    becomes negative. */
  21
  22 void
  23 testTortureExecute (void)
  24 {
  25   int i;
  26   for (i = BAR; i >= FOO; --i)
  27     if (i == -1)
  28       ASSERT (0);
  29
  30   return;
  31 }
  32