gcc/testsuite/gcc.dg/cpp/mi7.c

   1 /* Test "ignore redundant include" facility.
   2
   3    -H is used because cpp might confuse the issue by optimizing out
   4    #line markers.  This test only passes if the headers is read
   5    twice.
   6
   7    The disgusting regexp in the dg-error line, when stuck into
   8    dg.exp's compiler-output regexp, matches the correct -H output and
   9    only the correct -H output.  It has to be all on one line because
  10    otherwise it will not be interpreted all in one unit.  */
  11
  12 /* { dg-do preprocess }
  13    { dg-options "-H" }
  14    { dg-message "mi7a\.h\n\[^\n\]*mi7a\.h\n\[^\n\]*mi7b\.h\n\[^\n\]*mi7b\.h" "redundant include check" { target *-*-* } 0 } */
  15
  16 #include "mi7a.h"
  17 #include "mi7a.h"
  18 #include "mi7b.h"
  19 #include "mi7b.h"