stdlib/bug-getcontext.c

   1 /* BZ 12420 */
   2
   3 #include <errno.h>
   4 #include <fenv.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <ucontext.h>
   8
   9 static int
  10 do_test (void)
  11 {
  12   int except_mask =  FE_DIVBYZERO | FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW;
  13   int status = feenableexcept (except_mask);
  14
  15   except_mask = fegetexcept ();
  16   if (except_mask == -1)
  17     {
  18       printf("\nBefore getcontext(): fegetexcept returned: %d\n",
  19              except_mask);
  20       return 1;
  21     }
  22
  23   ucontext_t ctx;
  24   status = getcontext(&ctx);
  25   if (status)
  26     {
  27       printf("\ngetcontext failed, errno: %d.\n", errno);
  28       return 1;
  29     }
  30
  31   printf ("\nDone with getcontext()!\n");
  32   fflush (NULL);
  33
  34   int mask = fegetexcept ();
  35   if (mask != except_mask)
  36     {
  37       printf("\nAfter getcontext(): fegetexcept returned: %d, expected: %d.\n",
  38              mask, except_mask);
  39       return 1;
  40     }
  41
  42   printf("\nAt end fegetexcept() returned %d, expected: %d.\n",
  43          mask, except_mask);
  44   return 0;
  45 }
  46
  47 #define TEST_FUNCTION do_test ()
  48 #include "../test-skeleton.c"