modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20040709-1.c (about) 1 /* { dg-require-effective-target int32plus } */ 2 3 /* Test arithmetics on bitfields. */ 4 5 extern void abort (void); 6 extern void exit (int); 7 8 unsigned int 9 myrnd (void) 10 { 11 static unsigned int s = 1388815473; 12 s *= 1103515245; 13 s += 12345; 14 return (s / 65536) % 2048; 15 } 16 17 #define T(S) \ 18 struct S s##S; \ 19 struct S retme##S (struct S x) \ 20 { \ 21 return x; \ 22 } \ 23 \ 24 unsigned int fn1##S (unsigned int x) \ 25 { \ 26 struct S y = s##S; \ 27 y.k += x; \ 28 y = retme##S (y); \ 29 return y.k; \ 30 } \ 31 \ 32 unsigned int fn2##S (unsigned int x) \ 33 { \ 34 struct S y = s##S; \ 35 y.k += x; \ 36 y.k %= 15; \ 37 return y.k; \ 38 } \ 39 \ 40 unsigned int retit##S (void) \ 41 { \ 42 return s##S.k; \ 43 } \ 44 \ 45 unsigned int fn3##S (unsigned int x) \ 46 { \ 47 s##S.k += x; \ 48 return retit##S (); \ 49 } \ 50 \ 51 void test##S (void) \ 52 { \ 53 int i; \ 54 unsigned int mask, v, a, r; \ 55 struct S x; \ 56 char *p = (char *) &s##S; \ 57 for (i = 0; i < sizeof (s##S); ++i) \ 58 *p++ = myrnd (); \ 59 if (__builtin_classify_type (s##S.l) == 8) \ 60 s##S.l = 5.25; \ 61 s##S.k = -1; \ 62 mask = s##S.k; \ 63 v = myrnd (); \ 64 a = myrnd (); \ 65 s##S.k = v; \ 66 x = s##S; \ 67 r = fn1##S (a); \ 68 if (x.i != s##S.i || x.j != s##S.j \ 69 || x.k != s##S.k || x.l != s##S.l \ 70 || ((v + a) & mask) != r) \ 71 abort (); \ 72 v = myrnd (); \ 73 a = myrnd (); \ 74 s##S.k = v; \ 75 x = s##S; \ 76 r = fn2##S (a); \ 77 if (x.i != s##S.i || x.j != s##S.j \ 78 || x.k != s##S.k || x.l != s##S.l \ 79 || ((((v + a) & mask) % 15) & mask) != r) \ 80 abort (); \ 81 v = myrnd (); \ 82 a = myrnd (); \ 83 s##S.k = v; \ 84 x = s##S; \ 85 r = fn3##S (a); \ 86 if (x.i != s##S.i || x.j != s##S.j \ 87 || s##S.k != r || x.l != s##S.l \ 88 || ((v + a) & mask) != r) \ 89 abort (); \ 90 } 91 92 struct A { unsigned int i : 6, l : 1, j : 10, k : 15; }; T(A) 93 struct B { unsigned int i : 6, j : 11, k : 15; unsigned int l; }; T(B) 94 struct C { unsigned int l; unsigned int i : 6, j : 11, k : 15; }; T(C) 95 struct D { unsigned long long l : 6, i : 6, j : 23, k : 29; }; T(D) 96 struct E { unsigned long long l, i : 12, j : 23, k : 29; }; T(E) 97 struct F { unsigned long long i : 12, j : 23, k : 29, l; }; T(F) 98 struct G { unsigned int i : 12, j : 13, k : 7; unsigned long long l; }; T(G) 99 struct H { unsigned int i : 12, j : 11, k : 9; unsigned long long l; }; T(H) 100 struct I { unsigned short i : 1, j : 6, k : 9; unsigned long long l; }; T(I) 101 struct J { unsigned short i : 1, j : 8, k : 7; unsigned short l; }; T(J) 102 struct K { unsigned int k : 6, l : 1, j : 10, i : 15; }; T(K) 103 struct L { unsigned int k : 6, j : 11, i : 15; unsigned int l; }; T(L) 104 struct M { unsigned int l; unsigned int k : 6, j : 11, i : 15; }; T(M) 105 struct N { unsigned long long l : 6, k : 6, j : 23, i : 29; }; T(N) 106 struct O { unsigned long long l, k : 12, j : 23, i : 29; }; T(O) 107 struct P { unsigned long long k : 12, j : 23, i : 29, l; }; T(P) 108 struct Q { unsigned int k : 12, j : 13, i : 7; unsigned long long l; }; T(Q) 109 struct R { unsigned int k : 12, j : 11, i : 9; unsigned long long l; }; T(R) 110 struct S { unsigned short k : 1, j : 6, i : 9; unsigned long long l; }; T(S) 111 struct T { unsigned short k : 1, j : 8, i : 7; unsigned short l; }; T(T) 112 struct U { unsigned short j : 6, k : 1, i : 9; unsigned long long l; }; T(U) 113 struct V { unsigned short j : 8, k : 1, i : 7; unsigned short l; }; T(V) 114 struct W { long double l; unsigned int k : 12, j : 13, i : 7; }; T(W) 115 struct X { unsigned int k : 12, j : 13, i : 7; long double l; }; T(X) 116 struct Y { unsigned int k : 12, j : 11, i : 9; long double l; }; T(Y) 117 struct Z { long double l; unsigned int j : 13, i : 7, k : 12; }; T(Z) 118 119 int 120 main (void) 121 { 122 testA (); 123 testB (); 124 testC (); 125 testD (); 126 testE (); 127 testF (); 128 testG (); 129 testH (); 130 testI (); 131 testJ (); 132 testK (); 133 testL (); 134 testM (); 135 testN (); 136 testO (); 137 testP (); 138 testQ (); 139 testR (); 140 testS (); 141 testT (); 142 testU (); 143 testV (); 144 testW (); 145 testX (); 146 testY (); 147 testZ (); 148 exit (0); 149 }