tests/tests2/96_nodata_wanted.c

   1 /*****************************************************************************/
   2 /* test 'nodata_wanted' data output suppression */
   3
   4 #if defined test_static_data_error
   5 void foo() {
   6     if (1) {
   7         static short w = (int)&foo; /* initializer not computable */
   8     }
   9 }
  10
  11 #elif defined test_static_nodata_error
  12 void foo() {
  13     if (0) {
  14         static short w = (int)&foo; /* initializer not computable */
  15     }
  16 }
  17
  18 #elif defined test_global_data_error
  19 void foo();
  20 static short w = (int)&foo; /* initializer not computable */
  21
  22
  23 #elif defined test_local_data_noerror
  24 void foo() {
  25     short w = &foo; /* 2 cast warnings */
  26 }
  27
  28 #elif defined test_data_suppression
  29 #include <stdio.h>
  30
  31 #define ASMLABELS(s) \
  32     __asm__(".global d"#s",t"#s"\n.data\nd"#s":\n.text\nt"#s":\n")
  33
  34 #define PROG \
  35         static void *p = (void*)&main;\
  36         static char cc[] = "static string";\
  37         static double d = 8.0;\
  38         static struct __attribute__((packed)) {\
  39             unsigned x : 12;\
  40             unsigned char y : 7;\
  41             unsigned z : 28, a: 4, b: 5;\
  42         } s = { 0x333,0x44,0x555555,6,7 };\
  43         printf("  static data: %d - %.1f - %.1f - %s - %s\n",\
  44             sizeof 8.0, 8.0, d, __FUNCTION__, cc);\
  45         printf("  static bitfields: %x %x %x %x %x\n", s.x, s.y, s.z, s.a, s.b);
  46
  47 int main()
  48 {
  49     extern char ds1[],ts1[];
  50     extern char ds2[],ts2[];
  51     extern char de1[],te1[];
  52     extern char de2[],te2[];
  53
  54     printf("suppression off\n");
  55     if (1) {
  56         ASMLABELS(s1);
  57         PROG
  58         ASMLABELS(e1);
  59     }
  60     printf("  data length is %s\n", de1 - ds1 ? "not 0":"0");
  61     printf("  text length is %s\n", te1 - ts1 ? "not 0":"0");
  62
  63     printf("suppression on\n");
  64     if (0) {
  65         ASMLABELS(s2);
  66         PROG
  67         ASMLABELS(e2);
  68     }
  69     printf("  data length is %x\n", de2 - ds2);
  70     printf("  text length is %X\n", te2 - ts2);
  71     return 0;
  72 }
  73
  74 #endif