1  /* PR c/81566 - invalid attribute aligned accepted on functions
       2     { dg-do compile }
       3     { dg-options "-Wall -Wattributes -ftrack-macro-expansion=0" } */
       4  
       5  #define ATTR(list) __attribute__ (list)
       6  #define ALIGN(n)   ATTR ((aligned (n)))
       7  
       8  /* It's okay to increase the alignment of a function.  */
       9  
      10  void ALIGN (16) ALIGN (32)
      11  falign32_1 (void);
      12  
      13  void ALIGN (16) falign32_2 (void);
      14  void ALIGN (32) falign32_2 (void);
      15  
      16  void falign32_2 (void) { }
      17  
      18  void ALIGN (32) falign32_2 (void);
      19  
      20  /* It's not okay to decrease it.  */
      21  
      22  void ALIGN (32) ALIGN (16)
      23  falign64_3 (void);            /* { dg-warning "ignoring attribute .aligned \\(16\\). because it conflicts with attribute .aligned \\(32\\)." } */
      24  
      25  void ALIGN (32)
      26  falign64_3 (void);
      27  
      28  void falign64_3 (void);
      29  
      30  void falign64_3 (void) { }
      31  
      32  
      33  void ALIGN (32)
      34  falign64_4 (void);            /* { dg-message "previous declaration here" } */
      35  
      36  void ALIGN (16)
      37  falign64_4 (void);            /* { dg-warning "ignoring attribute .aligned \\(16\\). because it conflicts with attribute .aligned \\(32\\)." } */
      38  
      39  void ALIGN (32)
      40  falign64_4 (void);            /* { dg-message "previous declaration here" } */
      41  
      42  void ALIGN (16)
      43  falign64_4 (void);            /* { dg-warning "ignoring attribute .aligned \\(16\\). because it conflicts with attribute .aligned \\(32\\)." } */
      44  
      45  void ALIGN (64)
      46  falign64_4 (void);
      47  
      48  void ALIGN (32)
      49  falign64_4 (void);            /* { dg-warning "ignoring attribute .aligned \\(32\\). because it conflicts with attribute .aligned \\(64\\)." } */
      50  
      51  void falign64_4 (void);
      52  
      53  void ALIGN (64)
      54  falign64_4 (void) { }
      55  
      56  void falign64_4 (void);
      57  
      58  void ALIGN (64)
      59  falign64_4 (void);
      60  
      61  
      62  void ATTR ((aligned (16), aligned (32)))
      63  falign64_5 (void);
      64  
      65  void ATTR ((aligned (32), aligned (64)))
      66  falign64_5 (void);
      67  
      68  void ATTR ((aligned (16), aligned (32), aligned (64)))
      69  falign64_5 (void);            /* { dg-warning "ignoring attribute .aligned \\(16\\). because it conflicts with attribute .aligned \\(64\\)." } */
      70                                /* { dg-warning "ignoring attribute .aligned \\(32\\). because it conflicts with attribute .aligned \\(64\\)." "" { target *-*-* } .-1 } */
      71  
      72  
      73  void ATTR ((aligned (16), aligned (32), aligned (16)))
      74  falign64_6 (void);            /* { dg-warning "ignoring attribute .aligned \\(16\\). because it conflicts with attribute .aligned \\(32\\)." } */