gcc/testsuite/gcc.c-torture/execute/va-arg-24.c

   1 /* The purpose of this code is to test argument passing of a tuple of
   2    11 integers, with the break point between named and unnamed arguments
   3    at every possible position.  */
   4
   5 #include <stdarg.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 static int errors = 0;
  10
  11 static void
  12 verify (const char *tcase, int n[11])
  13 {
  14   int i;
  15   for (i = 0; i <= 10; i++)
  16     if (n[i] != i)
  17       {
  18         printf (" %s: n[%d] = %d expected %d\n", tcase, i, n[i], i);
  19         errors++;
  20       }
  21 }
  22
  23 #define STR(x) #x
  24
  25 #define p(i) int q##i,
  26 #define P(i) n[i] = q##i;
  27
  28 #define p0 p(0)
  29 #define p1 p(1)
  30 #define p2 p(2)
  31 #define p3 p(3)
  32 #define p4 p(4)
  33 #define p5 p(5)
  34 #define p6 p(6)
  35 #define p7 p(7)
  36 #define p8 p(8)
  37 #define p9 p(9)
  38
  39 #define P0 P(0)
  40 #define P1 P(1)
  41 #define P2 P(2)
  42 #define P3 P(3)
  43 #define P4 P(4)
  44 #define P5 P(5)
  45 #define P6 P(6)
  46 #define P7 P(7)
  47 #define P8 P(8)
  48 #define P9 P(9)
  49
  50 #define TCASE(x, params, vecinit)               \
  51 static void                                     \
  52 varargs##x (params ...)                         \
  53 {                                               \
  54   va_list ap;                                   \
  55   int n[11];                                    \
  56   int i;                                        \
  57                                                 \
  58   va_start (ap, q##x);                          \
  59   vecinit                                       \
  60   for (i = x + 1; i <= 10; i++)                 \
  61     n[i] = va_arg (ap, int);                    \
  62   va_end (ap);                                  \
  63                                                 \
  64   verify (STR(varargs##x), n);                  \
  65 }
  66
  67 #define TEST(x) varargs##x (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
  68
  69 TCASE(0, p0                           , P0                           )
  70 TCASE(1, p0 p1                        , P0 P1                        )
  71 TCASE(2, p0 p1 p2                     , P0 P1 P2                     )
  72 TCASE(3, p0 p1 p2 p3                  , P0 P1 P2 P3                  )
  73 TCASE(4, p0 p1 p2 p3 p4               , P0 P1 P2 P3 P4               )
  74 TCASE(5, p0 p1 p2 p3 p4 p5            , P0 P1 P2 P3 P4 P5            )
  75 TCASE(6, p0 p1 p2 p3 p4 p5 p6         , P0 P1 P2 P3 P4 P5 P6         )
  76 TCASE(7, p0 p1 p2 p3 p4 p5 p6 p7      , P0 P1 P2 P3 P4 P5 P6 P7      )
  77 TCASE(8, p0 p1 p2 p3 p4 p5 p6 p7 p8   , P0 P1 P2 P3 P4 P5 P6 P7 P8   )
  78 TCASE(9, p0 p1 p2 p3 p4 p5 p6 p7 p8 p9, P0 P1 P2 P3 P4 P5 P6 P7 P8 P9)
  79
  80 int main(void)
  81 {
  82   TEST(0);
  83   TEST(1);
  84   TEST(2);
  85   TEST(3);
  86   TEST(4);
  87   TEST(5);
  88   TEST(6);
  89   TEST(7);
  90   TEST(8);
  91   TEST(9);
  92
  93   if (errors)
  94     abort ();
  95   exit (0);
  96 }