1  /* PR preprocessor/28709 */
       2  /* 
       3     { dg-options "-ftrack-macro-expansion=2" }
       4     { dg-do preprocess }
       5  */
       6  
       7  #define foo - ## >> /* { dg-error "pasting \"-\" and \">>\"" } */
       8  foo
       9  #define bar = ## == /* { dg-error "pasting \"=\" and \"==\"" } */
      10  bar
      11