test/Sema/bitfield.c

   1 // RUN: %clang_cc1 %s -fsyntax-only -verify
   2 enum e0; // expected-note{{forward declaration of 'enum e0'}}
   3
   4 struct a {
   5   int a : -1; // expected-error{{bit-field 'a' has negative width}}
   6
   7   // rdar://6081627
   8   int b : 33; // expected-error{{size of bit-field 'b' (33 bits) exceeds size of its type (32 bits)}}
   9
  10   int c : (1 + 0.25); // expected-error{{expression is not an integer constant expression}}
  11   int d : (int)(1 + 0.25);
  12
  13   // rdar://6138816
  14   int e : 0;  // expected-error {{bit-field 'e' has zero width}}
  15
  16   float xx : 4;  // expected-error {{bit-field 'xx' has non-integral type}}
  17
  18   // PR3607
  19   enum e0 f : 1; // expected-error {{field has incomplete type 'enum e0'}}
  20
  21   int g : (_Bool)1;
  22
  23   // PR4017
  24   char : 10;      // expected-error {{size of anonymous bit-field (10 bits) exceeds size of its type (8 bits)}}
  25   unsigned : -2;  // expected-error {{anonymous bit-field has negative width (-2)}}
  26   float : 12;     // expected-error {{anonymous bit-field has non-integral type 'float'}}
  27 };
  28
  29 struct b {unsigned x : 2;} x;
  30 __typeof__(x.x+1) y;
  31 int y;
  32
  33 struct {unsigned x : 2;} x2;
  34 __typeof__((x.x+=1)+1) y;
  35 __typeof__(x.x<<1) y;
  36 int y;
  37
  38 struct PR8025 {
  39   double : 2; // expected-error{{anonymous bit-field has non-integral type 'double'}}
  40 };