1  /* Copyright (C) 2000 Free Software Foundation, Inc.  */
       2  
       3  /* { dg-do preprocess } */
       4  
       5  /* Tests the _Pragma operator.  Contributed by Neil Booth 1 Nov 2000.  */
       6  
       7  /* Within the preprocessor, the easy pragma to test is "poison".  */
       8  
       9  #pragma GCC poison p1
      10  p1				/* { dg-error "poisoned" } */
      11  
      12  /* Standard use of _Pragma.  */
      13  _Pragma ("GCC poison p2")
      14  p2				/* { dg-error "poisoned" } */
      15  
      16  /* Don't interpret _Pragmas in directives.  The standard is not clear
      17     on this, but I think this makes most sense.  */
      18  #if 1 _Pragma (L"GCC poison p3") /* { dg-error "missing binary operator" } */
      19  p3
      20  #endif
      21  
      22  #define M1 _Pragma ("GCC poison p4")
      23  p4				/* No problem; not yet poisoned.  */
      24  #define M2(x) _Pragma (#x)
      25  
      26  /* Now test macro expansion with embedded _Pragmas.  */
      27  M1 p4				/* { dg-error "poisoned" } */
      28  M2 (GCC poison p5) p5		/* { dg-error "poisoned" } */
      29  
      30  /* Not interpreting _Pragma in directives means they don't nest.  */
      31  _Pragma ("_Pragma (\"GCC poison p6\") GCC poison p7")
      32  p6
      33  p7
      34  
      35  /* Check we ignore them in false conditionals.  */
      36  #if 0
      37  _Pragma ("GCC poison p8")
      38  #endif
      39  p8				/* No problem.  */