gcc/testsuite/gcc.dg/Wcxx-compat-8.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wc++-compat" } */
   3
   4 struct s1
   5 {
   6   enum e1       /* { dg-message "note: enum type defined here" } */
   7   {
   8     A = sizeof (struct s2 { int i; }),  /* { dg-warning "invalid in C\[+\]\[+\]" } */
   9     B
  10   } f1;
  11 };
  12 struct s2 v1;   /* Don't issue another warning about s2.  */
  13 enum e1 v2;     /* { dg-warning "not visible in C\[+\]\[+\]" } */
  14
  15 enum e2
  16 {
  17   C = sizeof (struct s3 { int i; }),    /* { dg-warning "invalid in C\[+\]\[+\]" } */
  18   D = __alignof__ (struct s4 { int i; }), /* { dg-warning "invalid in C\[+\]\[+\]" } */
  19   E
  20 };
  21
  22 struct s3 v3;
  23 int v4 = C;
  24
  25 enum e3
  26 {
  27   F = sizeof (struct t3),       /* { dg-bogus "invalid in C\[+\]\[+\]" } */
  28   /* { dg-error "invalid application of 'sizeof'" "" { target *-*-* } .-1 } */
  29   G = __alignof__ (struct t4), /* { dg-bogus "invalid in C\[+\]\[+\]" } */
  30   /* { dg-error "invalid application of '__alignof__'" "" { target *-*-* } .-1 } */
  31   H
  32 };
  33
  34 __typeof__ (struct s5 { int i; }) v5; /* { dg-warning "invalid in C\[+\]\[+\]" } */
  35 __typeof__ (struct t5) w5; /* { dg-bogus "invalid in C\[+\]\[+\]" } */
  36   /* { dg-error "storage size of 'w5' isn't known" "" { target *-*-* } .-1 } */
  37
  38 int
  39 f1 (struct s1 *p)
  40 {
  41   return ((struct s6 { int j; } *) p)->j;  /* { dg-warning "invalid in C\[+\]\[+\]" } */
  42 }
  43
  44 void *
  45 f2 (struct s1 *p)
  46 {
  47   return ((struct t6 *) p);  /* { dg-bogus "invalid in C\[+\]\[+\]" } */
  48 }
  49
  50 int
  51 f3 (struct s1 *p)
  52 {
  53   return (__extension__ (struct s7 { int j; } *)p)->j;
  54 }
  55
  56 int
  57 f4 ()
  58 {
  59   return (struct s8 { int i; }) { 0 }.i;  /* { dg-warning "invalid in C\[+\]\[+\]" } */
  60 }
  61
  62 void *
  63 f5 ()
  64 {
  65   return &((struct t8) { });  /* { dg-warning "invalid in C\[+\]\[+\]" } */
  66   /* { dg-error "invalid use of undefined type" "" { target *-*-* } .-1 } */
  67 }