sdcc/support/regression/tests/structflexarray.c

   1 /* Check basic behaviour of "flexible array members"
   2  */
   3 #include <testfwk.h>
   4
   5 #if defined(__SUNPRO_C) || defined(__GNUC__)
   6 #pragma pack(1)
   7 #endif
   8
   9 #if !defined(__SUNPRO_C) && (!defined(__GNUC__) || (defined(__GNUC__) && __GNUC__ >= 3))
  10 /* flexible array members not supported by gcc < 3 compiler
  11    and seems not to be supported on SunPro C compiler */
  12 struct str1
  13 {
  14   char c;
  15   short i[];
  16 };
  17
  18 struct str1 s11 = { 1, {2, 3} };
  19 struct str1 s12 = { 4, {5, 6, 7} }; /* different size */
  20 #endif
  21
  22 static void
  23 testFlexibleArray1(void)
  24 {
  25 #if !defined(__SUNPRO_C) && (!defined(__GNUC__) || (defined(__GNUC__) && __GNUC__ >= 3))
  26   /* flexible array members not supported by gcc < 3 compiler
  27      and seems not to be supported on SunPro C compiler */
  28   /* test sizeof */
  29   ASSERT(sizeof(s11) == 1);
  30   /* test allocation size */
  31 #if !defined(PORT_HOST) && !defined(__SDCC_pic14) // Linker changes data order
  32    ASSERT((char *) &s12 - (char *) &s11 == 1 + 4);
  33 #endif
  34 #endif
  35 }
  36
  37
  38 /* test initialisation with string */
  39
  40 #if !defined(__SUNPRO_C) && (!defined(__GNUC__) || (defined(__GNUC__) && __GNUC__ >= 3))
  41 /* flexible array members not supported by gcc < 3 compiler
  42    and seems not to be supported on SunPro C compiler */
  43 struct str2
  44 {
  45   short s;
  46   char str2[];
  47 };
  48
  49 struct str2 s21 = { 1, "sdcc" };
  50 struct str2 s22 = { 2, "sdcc is great" }; /* different size */
  51 #endif
  52
  53 static void
  54 testFlexibleArray2(void)
  55 {
  56 #if !defined(__SUNPRO_C) && (!defined(__GNUC__) || (defined(__GNUC__) && __GNUC__ >= 3))
  57   /* flexible array members not supported by gcc < 3 compiler
  58      and seems not to be supported on SunPro C compiler */
  59   /* test sizeof */
  60   ASSERT(sizeof(s21) == 2);
  61   /* test allocation size */
  62 #if !defined(PORT_HOST) && !defined(__SDCC_pic14) // Linker changes data order
  63    ASSERT((char *) &s22 - (char *) &s21 == 2 + 5);
  64 #endif
  65 #endif
  66 }