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

   1 /* Test that #pragma message "..." writes compiler messages. */
   2
   3 #pragma message                  /* { dg-warning "expected a string" } */
   4 #pragma message 0                /* { dg-warning "expected a string" } */
   5 #pragma message id               /* { dg-warning "expected a string" } */
   6 #pragma message (                /* { dg-warning "expected a string" } */
   7 #pragma message (0               /* { dg-warning "expected a string" } */
   8 #pragma message (id              /* { dg-warning "expected a string" } */
   9 #pragma message ()               /* { dg-warning "expected a string" } */
  10 #pragma message (0)              /* { dg-warning "expected a string" } */
  11 #pragma message (id)             /* { dg-warning "expected a string" } */
  12
  13 /* gcc prefixes '#pragma message ...' output with filename and line number,
  14    then 'note: #pragma message: ', allowing dg-message to check output.
  15    If unexpected pragma messages are printed (anything not caught by a
  16    matching dg-message), dejagnu will report these as excess errors.  */
  17
  18 #pragma message "
  19 /* { dg-error "17:missing terminating" "" { target *-*-* } 18 } */
  20 /* { dg-warning "expected a string" "" { target *-*-* } 18 } */
  21 #pragma message "Bad 1
  22 /* { dg-error "17:missing terminating" "" { target *-*-* } 21 } */
  23 /* { dg-warning "expected a string" "" { target *-*-* } 21 } */
  24 #pragma message ("Bad 2
  25 /* { dg-error "18:missing terminating" "" { target *-*-* } 24 } */
  26 /* { dg-warning "expected a string" "" { target *-*-* } 24 } */
  27 #pragma message ("Bad 3"
  28 /* { dg-warning "malformed '#pragma message" "" { target *-*-* } 27 } */
  29
  30 #pragma message "" junk
  31 /* { dg-warning "junk at end of '#pragma message'" "" { target *-*-* } 30 } */
  32
  33 #pragma message ("") junk
  34 /* { dg-warning "junk at end of '#pragma message'" "" { target *-*-* } 33 } */
  35
  36 #pragma message ""               /* No output expected for empty messages.  */
  37 #pragma message ("")
  38
  39 #pragma message "Okay 1"         /* { dg-message "Okay 1" } */
  40 #pragma message ("Okay 2")       /* { dg-message "Okay 2" } */
  41 #define THREE "3"
  42 #pragma message ("Okay " THREE)  /* { dg-message "Okay 3" } */
  43
  44 /* Create a TODO() that prints a message on compilation.  */
  45 #define DO_PRAGMA(x) _Pragma (#x)
  46 #define TODO(x) DO_PRAGMA(message ("TODO - " #x))
  47 TODO(Okay 4)                     /* { dg-message "TODO - Okay 4" } */
  48
  49 #if 0
  50 #pragma message ("Not printed")
  51 #endif
  52
  53 int unused;  /* Silence `ISO C forbids an empty translation unit' warning.  */