sdcc/support/regression/tests/structassign.c.in

   1 /*  Test assignment of one struct/union to another, including transitivity.
   2
   3     type: char, int, long
   4
   5  */
   6 #include <testfwk.h>
   7
   8 /* declare some structs and unions */
   9 struct t { {type} a; };
  10 struct s { {type} a; {type} b; };
  11
  12 struct t t1 = { 1 };
  13 struct t t2 = { 2 };
  14
  15 struct s s1 = { 1, 2 };
  16 struct s s2 = { 3, 4 };
  17 #ifndef __SDCC_pdk14 // Lack of memory
  18 struct s s3 = { 5, 6 };
  19
  20 union u { {type} a; float b; char c; };
  21
  22 union u u1, u2, u3;
  23 #endif
  24
  25 /* struct: simple assignment */
  26 void
  27 testSimpleStructAssignment(void)
  28 {
  29   s1 = s2;
  30   ASSERT(s1.a == 3);
  31   ASSERT(s1.b == 4);
  32
  33   t1 = t2;
  34   ASSERT(t1.a == 2);
  35 }
  36
  37 /* struct: transitive assignment */
  38 void
  39 testTransitiveStructAssignment(void)
  40 {
  41 #ifndef __SDCC_pdk14 // Lack of memory
  42   s1 = s2 = s3;
  43   ASSERT(s1.a == 5);
  44   ASSERT(s1.b == 6);
  45   ASSERT(s2.a == 5);
  46   ASSERT(s2.b == 6);
  47 #endif
  48 }
  49
  50 /* union: simple assignment */
  51 void
  52 testSimpleUnionAssignment(void)
  53 {
  54 #ifndef __SDCC_pdk14 // Lack of memory
  55   u1.b = 0.0f;
  56   u2.b = -1.5f;
  57   u1 = u2;
  58   ASSERT(u1.b == -1.5f);
  59 #endif
  60 }
  61
  62 /* union: transitive assignment */
  63 void
  64 testTransitiveUnionAssignment(void)
  65 {
  66 #ifndef __SDCC_pdk14 // Lack of memory
  67   u1.b = 0.0f;
  68   u2.b = 0.1f;
  69   u3.b = -1.5f;
  70   u1 = u2 = u3;
  71   ASSERT(u1.b == -1.5f);
  72   ASSERT(u2.b == -1.5f);
  73 #endif
  74 }
  75
  76 /* test for unintended double evaluation */
  77 void
  78 testUnintendedDoubleEval(void)
  79 {
  80 #ifndef __SDCC_pdk14 // Lack of memory
  81   struct s ss[3];
  82   int n = 2;
  83   ss[2] = ss[--n] = ss[0];
  84   ASSERT(n == 1);
  85 #endif
  86 }