1  /* Test for redefining traditional macros with significant differences.  */
       2  
       3  /* { dg-do preprocess } */
       4  
       5  #define foo bar    /* { dg-message "-:previous def" "foo prev def" } */
       6  #define foo barr   /* { dg-warning "-:redefined" "foo redefined" } */
       7  
       8  #undef foo
       9  #define foo bar    /* { dg-message "-:previous def" "foo prev def 2" } */
      10  #define foo() bar    /* { dg-warning "-:redefined" "foo redefined 2" } */
      11  
      12  #undef foo
      13  #define foo() bar    /* { dg-message "-:previous def" "foo prev def" } */
      14  #define foo() barr   /* { dg-warning "-:redefined" "foo redefined" } */
      15  
      16  #define quux(thud) a thud b /* { dg-message "-:previous def" "quux prev def" } */
      17  #define quux(thu) a thud b   /* { dg-warning "-:redefined" "quux redefined" } */
      18  
      19  #define bar(x, y) x+y /* { dg-message "-:previous def" "bar prev def" } */
      20  #define bar(x, y) x+x   /* { dg-warning "-:redefined" "bar redefined" } */
      21  
      22  #define bat(x, y) x+y  /* { dg-message "-:previous def" "bat prev def" } */
      23  #define bat(x, y) x+ y   /* { dg-warning "-:redefined" "bat redefined" } */
      24  
      25  #define baz(x, y) x+y  /* { dg-message "-:previous def" "baz prev def" } */
      26  #define baz(x, y) x +y   /* { dg-warning "-:redefined" "baz redefined" } */
      27  
      28  #define f(x, y) "x y"  /* { dg-message "-:previous def" "f prev def" } */
      29  #define f(x, y) "x  y"   /* { dg-warning "-:redefined" "f redefined" } */
      30  
      31  #define g(x, y) 'x'  /* { dg-message "-:previous def" "g prev def" } */
      32  #define g(x, y) ' x'   /* { dg-warning "-:redefined" "g redefined" } */