gcc/testsuite/gcc.dg/floatn-errs.c

   1 /* Tests for _FloatN / _FloatNx types: test erroneous code.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "" } */
   4 /* { dg-add-options float32 } */
   5 /* { dg-add-options float64 } */
   6 /* { dg-add-options float32x } */
   7 /* { dg-require-effective-target float32 } */
   8 /* { dg-require-effective-target float32x } */
   9 /* { dg-require-effective-target float64 } */
  10
  11 /* _FloatN, _FloatNx and standard types are incompatible even if they
  12    have the same ABI.  */
  13
  14 extern float a; /* { dg-message "previous declaration" } */
  15 extern _Float32 a; /* { dg-error "conflicting" } */
  16
  17 extern double b; /* { dg-message "previous declaration" } */
  18 extern _Float32x b; /* { dg-error "conflicting" } */
  19
  20 extern _Float64 c; /* { dg-message "previous declaration" } */
  21 extern _Float32x c; /* { dg-error "conflicting" } */
  22
  23 /* These types are not promoted in old-style function definitions.  */
  24
  25 void f (_Float32);
  26 void
  27 f (x)
  28      _Float32 x;
  29 {
  30 }
  31
  32 void g (double); /* { dg-error "prototype declaration" } */
  33 void
  34 g (x)
  35      _Float32 x; /* { dg-error "match prototype" } */
  36 {
  37 }
  38
  39 void h (_Float64); /* { dg-error "prototype declaration" } */
  40 void
  41 h (x)
  42      _Float32 x; /* { dg-error "match prototype" } */
  43 {
  44 }