gcc/testsuite/gcc.dg/pragma-darwin.c

   1 /* Darwin (Mac OS X) pragma exercises.  */
   2
   3 /* { dg-do run { target *-*-darwin* } } */
   4 /* { dg-options "-O -Wunused" } */
   5
   6 /* The mark pragma is to help decorate IDEs.  */
   7
   8 extern void abort(void);
   9
  10 #pragma mark hey hey ho
  11
  12 /* The options pragma used to do a lot, now it's only for emulating
  13    m68k alignment rules in structs.  */
  14
  15 #pragma options 23  /* { dg-warning "malformed '#pragma options'" } */
  16 #pragma options align  /* { dg-warning "malformed '#pragma options'" } */
  17 #pragma options align natural /* { dg-warning "malformed '#pragma options'" } */
  18 #pragma options align=45 /* { dg-warning "malformed '#pragma options'" } */
  19 #pragma options align=foo /* { dg-warning "malformed '#pragma options align" } */
  20
  21 #ifndef __LP64__
  22 #pragma options align=mac68k
  23 struct s1 { short f1; int f2; };
  24 #endif
  25 #pragma options align=power
  26 struct s2 { short f1; int f2; };
  27 #ifndef __LP64__
  28 #pragma options align=mac68k
  29 struct s3 { short f1; int f2; };
  30 #endif
  31 #pragma options align=reset
  32 struct s4 { short f1; int f2; };
  33
  34 #pragma options align=natural foo /* { dg-warning "junk at end of '#pragma options'" } */
  35 /* { dg-warning "malformed '#pragma options align={mac68k|power|reset}', ignoring" "ignoring" { target *-*-* } 34 } */
  36
  37 /* Segment pragmas don't do anything anymore.  */
  38
  39 #pragma segment foo
  40
  41 int
  42 main ()
  43 {
  44   int x, z;  /* { dg-warning "unused variable 'z'" } */
  45   #pragma unused (x, y)
  46
  47 #ifndef __LP64__
  48   if (sizeof (struct s1) != 6)
  49     abort ();
  50 #endif
  51   if (sizeof (struct s2) != 8)
  52     abort ();
  53 #ifndef __LP64__
  54   if (sizeof (struct s3) != 6)
  55     abort ();
  56 #endif
  57   if (sizeof (struct s4) != 8)
  58     abort ();
  59   return 0;
  60 }
  61
  62 void
  63 unused_err_test ()
  64 {
  65   int a, b;
  66   /* Trying to match on '(' or ')' gives regexp headaches, use . instead.  */
  67 #pragma unused  /* { dg-warning "missing '.' after '#pragma unused" } */
  68 #pragma unused (a  /* { dg-warning "missing '.' after '#pragma unused" } */
  69 #pragma unused (b) foo /* { dg-warning "junk at end of '#pragma unused'" } */
  70 }