gcc/testsuite/gcc.c-torture/execute/20040709-2.c

   1 /* Test arithmetics on bitfields.  */
   2
   3 extern void abort (void);
   4 extern void exit (int);
   5
   6 unsigned int
   7 myrnd (void)
   8 {
   9   static unsigned int s = 1388815473;
  10   s *= 1103515245;
  11   s += 12345;
  12   return (s / 65536) % 2048;
  13 }
  14
  15 #define T(S)                                    \
  16 struct S s##S;                                  \
  17 struct S retme##S (struct S x)                  \
  18 {                                               \
  19   return x;                                     \
  20 }                                               \
  21                                                 \
  22 unsigned int fn1##S (unsigned int x)            \
  23 {                                               \
  24   struct S y = s##S;                            \
  25   y.k += x;                                     \
  26   y = retme##S (y);                             \
  27   return y.k;                                   \
  28 }                                               \
  29                                                 \
  30 unsigned int fn2##S (unsigned int x)            \
  31 {                                               \
  32   struct S y = s##S;                            \
  33   y.k += x;                                     \
  34   y.k %= 15;                                    \
  35   return y.k;                                   \
  36 }                                               \
  37                                                 \
  38 unsigned int retit##S (void)                    \
  39 {                                               \
  40   return s##S.k;                                \
  41 }                                               \
  42                                                 \
  43 unsigned int fn3##S (unsigned int x)            \
  44 {                                               \
  45   s##S.k += x;                                  \
  46   return retit##S ();                           \
  47 }                                               \
  48                                                 \
  49 void test##S (void)                             \
  50 {                                               \
  51   int i;                                        \
  52   unsigned int mask, v, a, r;                   \
  53   struct S x;                                   \
  54   char *p = (char *) &s##S;                     \
  55   for (i = 0; i < sizeof (s##S); ++i)           \
  56     *p++ = myrnd ();                            \
  57   if (__builtin_classify_type (s##S.l) == 8)    \
  58     s##S.l = 5.25;                              \
  59   s##S.k = -1;                                  \
  60   mask = s##S.k;                                \
  61   v = myrnd ();                                 \
  62   a = myrnd ();                                 \
  63   s##S.k = v;                                   \
  64   x = s##S;                                     \
  65   r = fn1##S (a);                               \
  66   if (x.i != s##S.i || x.j != s##S.j            \
  67       || x.k != s##S.k || x.l != s##S.l         \
  68       || ((v + a) & mask) != r)                 \
  69     abort ();                                   \
  70   v = myrnd ();                                 \
  71   a = myrnd ();                                 \
  72   s##S.k = v;                                   \
  73   x = s##S;                                     \
  74   r = fn2##S (a);                               \
  75   if (x.i != s##S.i || x.j != s##S.j            \
  76       || x.k != s##S.k || x.l != s##S.l         \
  77       || ((((v + a) & mask) % 15) & mask) != r) \
  78     abort ();                                   \
  79   v = myrnd ();                                 \
  80   a = myrnd ();                                 \
  81   s##S.k = v;                                   \
  82   x = s##S;                                     \
  83   r = fn3##S (a);                               \
  84   if (x.i != s##S.i || x.j != s##S.j            \
  85       || s##S.k != r || x.l != s##S.l           \
  86       || ((v + a) & mask) != r)                 \
  87     abort ();                                   \
  88 }
  89
  90 #define pck __attribute__((packed))
  91 struct pck A { unsigned short i : 1, l : 1, j : 3, k : 11; }; T(A)
  92 struct pck B { unsigned short i : 4, j : 1, k : 11; unsigned int l; }; T(B)
  93 struct pck C { unsigned int l; unsigned short i : 4, j : 1, k : 11; }; T(C)
  94 struct pck D { unsigned long long l : 6, i : 6, j : 23, k : 29; }; T(D)
  95 struct pck E { unsigned long long l, i : 12, j : 23, k : 29; }; T(E)
  96 struct pck F { unsigned long long i : 12, j : 23, k : 29, l; }; T(F)
  97 struct pck G { unsigned short i : 1, j : 1, k : 6; unsigned long long l; }; T(G)
  98 struct pck H { unsigned short i : 6, j : 2, k : 8; unsigned long long l; }; T(H)
  99 struct pck I { unsigned short i : 1, j : 6, k : 1; unsigned long long l; }; T(I)
 100 struct pck J { unsigned short i : 1, j : 8, k : 7; unsigned short l; }; T(J)
 101 struct pck K { unsigned int k : 6, l : 1, j : 10, i : 15; }; T(K)
 102 struct pck L { unsigned int k : 6, j : 11, i : 15; unsigned int l; }; T(L)
 103 struct pck M { unsigned int l; unsigned short k : 6, j : 11, i : 15; }; T(M)
 104 struct pck N { unsigned long long l : 6, k : 6, j : 23, i : 29; }; T(N)
 105 struct pck O { unsigned long long l, k : 12, j : 23, i : 29; }; T(O)
 106 struct pck P { unsigned long long k : 12, j : 23, i : 29, l; }; T(P)
 107 struct pck Q { unsigned short k : 12, j : 1, i : 3; unsigned long long l; }; T(Q)
 108 struct pck R { unsigned short k : 2, j : 11, i : 3; unsigned long long l; }; T(R)
 109 struct pck S { unsigned short k : 1, j : 6, i : 9; unsigned long long l; }; T(S)
 110 struct pck T { unsigned short k : 1, j : 8, i : 7; unsigned short l; }; T(T)
 111 struct pck U { unsigned short j : 6, k : 1, i : 9; unsigned long long l; }; T(U)
 112 struct pck V { unsigned short j : 8, k : 1, i : 7; unsigned short l; }; T(V)
 113 struct pck W { long double l; unsigned int k : 12, j : 13, i : 7; }; T(W)
 114 struct pck X { unsigned int k : 12, j : 13, i : 7; long double l; }; T(X)
 115 struct pck Y { unsigned int k : 12, j : 11, i : 9; long double l; }; T(Y)
 116 struct pck Z { long double l; unsigned int j : 13, i : 7, k : 12; }; T(Z)
 117
 118 int
 119 main (void)
 120 {
 121   testA ();
 122   testB ();
 123   testC ();
 124   testD ();
 125   testE ();
 126   testF ();
 127   testG ();
 128   testH ();
 129   testI ();
 130   testJ ();
 131   testK ();
 132   testL ();
 133   testM ();
 134   testN ();
 135   testO ();
 136   testP ();
 137   testQ ();
 138   testR ();
 139   testS ();
 140   testT ();
 141   testU ();
 142   testV ();
 143   testW ();
 144   testX ();
 145   testY ();
 146   testZ ();
 147   exit (0);
 148 }