gcc/testsuite/gcc.dg/cpp/redef1.c

   1 /* Test for redefining macros with insignificant (i.e. whitespace)
   2    differences.  */
   3
   4 /* { dg-do preprocess } */
   5
   6 #define foo bar
   7 #define /* x */ foo /* x */ bar /* x */
   8
   9 #define quux(thud) a one and a thud and a two
  10 #define /**/ quux( thud ) /**/ a one and a /**/ thud /**/ and /**/ a two
  11 #define quux(thud) a one        and a thud and a        two /* bah */
  12
  13 /* { dg-bogus "redefined" "foo redefined"       { target *-*-* } 7 } */
  14 /* { dg-bogus "redefined" "quux redefined"      { target *-*-* } 10 } */
  15 /* { dg-bogus "redefined" "quux redefined"      { target *-*-* } 11 } */
  16
  17 /* { dg-bogus "previous def" "foo prev def"     { target *-*-* } 6 } */
  18 /* { dg-bogus "previous def" "quux prev def"    { target *-*-* } 9 } */
  19 /* { dg-bogus "previous def" "quux prev def"    { target *-*-* } 10 } */