gcc/testsuite/gcc.dg/dfp/pragma-float-const-decimal64-8.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wall" } */
   3
   4 /* N1312 7.1.1: The FLOAT_CONST_DECIMAL64 pragma.
   5    C99 6.4.4.2a (New).
   6
   7    Pragma STDC FLOAT_CONST_DECIMAL64 "shall occur either outside external
   8    declarations or preceding all explicit declarations and statements
   9    inside a compound statement." */
  10
  11 #pragma STDC FLOAT_CONST_DECIMAL64 OFF
  12
  13 #define MAX 200
  14
  15 #pragma STDC FLOAT_CONST_DECIMAL64 ON
  16
  17 double a;
  18
  19 #pragma STDC FLOAT_CONST_DECIMAL64 OFF
  20
  21 struct S1 {
  22 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
  23   int i;
  24   int j;
  25 };
  26
  27 struct S2 {
  28   int i;
  29 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
  30   int j;
  31 };
  32
  33 struct S3 {
  34   int i;
  35   int j;
  36 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
  37 };
  38
  39 enum E1 {
  40 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-error "#pragma" } */
  41   one,
  42   two
  43 };
  44
  45 enum E2 {
  46   red,
  47 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-error "#pragma" } */
  48   blue
  49 };
  50
  51 enum E3 {
  52   cat,
  53   dog
  54 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-error "#pragma" } */
  55 };
  56
  57 double
  58 #pragma STDC FLOAT_CONST_DECIMAL64 OFF  /* { dg-error "#pragma" } */
  59 b;
  60
  61 double
  62 f1 (void)
  63 {
  64 #pragma STDC FLOAT_CONST_DECIMAL64 ON
  65   return a;
  66 }
  67
  68 double
  69 f2 (void)
  70 {
  71   double b;
  72 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
  73   b = 0.5;
  74   return a + b;
  75 }
  76
  77 #pragma STDC FLOAT_CONST_DECIMAL64 OFF
  78
  79 double
  80 f3 (void)
  81 {
  82   typedef double b32;
  83 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
  84   b32 b = 0.5;
  85   return b;
  86 }
  87
  88 double
  89 f4 (int i)
  90 {
  91 top:
  92 #pragma STDC FLOAT_CONST_DECIMAL64 OFF  /* { dg-warning "invalid location" } */
  93   if (i == 0)
  94     return a;
  95   a *= 2.;
  96   i = 0;
  97   goto top;
  98 }
  99
 100 double
 101 f5 (int i)
 102 {
 103   a = a * i;
 104 #pragma STDC FLOAT_CONST_DECIMAL64 OFF  /* { dg-warning "invalid location" } */
 105   return a * 2.;
 106 }
 107
 108 double
 109 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-error "#pragma" } */
 110 f6 (void)
 111 {
 112   return a;
 113 }
 114
 115 double
 116 f7
 117 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-error "#pragma" } */
 118 (void)                                  /* { dg-error "before" } */
 119 {
 120   return a;
 121 }
 122
 123 double
 124 f8 (void)
 125 {
 126   {
 127 #pragma STDC FLOAT_CONST_DECIMAL64 OFF
 128   }
 129 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
 130   return a;
 131 }
 132
 133 extern void foo9 (void *);
 134
 135 double
 136 f9 (void)
 137 {
 138   __label__ here;
 139 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
 140   foo9 (&&here);
 141 here:
 142   return a;
 143 }
 144
 145 double
 146 f10 (void)
 147 {
 148   void foo10 (void) /* { dg-warning "defined but not used" } */
 149   {
 150     a = 1.0;
 151   }
 152 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
 153   return a;
 154 }
 155
 156 double
 157 f11 (void)
 158 {
 159   __extension__
 160    struct A {
 161     struct { char a; };
 162     char b;
 163   };
 164 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
 165   return a;
 166 }
 167
 168 double
 169 f12 (void)
 170 {
 171   __extension__ ({ a = 0.5; });
 172 #pragma STDC FLOAT_CONST_DECIMAL64 ON   /* { dg-warning "invalid location" } */
 173   return a;
 174 }