gcc/testsuite/c-c++-common/Wmultistatement-macros-5.c

   1 /* PR c/80116 */
   2 /* { dg-options "-Wmultistatement-macros" } */
   3 /* { dg-do compile } */
   4
   5 #define M(N)    \
   6 L ## N:         \
   7   x++; x++ /* { dg-warning "macro expands to multiple statements" } */
   8
   9 int x, y, tmp;
  10
  11 void
  12 fn1 (void)
  13 {
  14   if (x) /* { dg-message "not guarded by this 'if' clause" } */
  15    M (0); /* { dg-message "in expansion of macro .M." } */
  16   if (x) /* { dg-message "not guarded by this 'if' clause" } */
  17    M (1); /* { dg-message "in expansion of macro .M." } */
  18 }