gcc/testsuite/c-c++-common/Wmultistatement-macros-7.c

   1 /* PR c/80116 */
   2 /* { dg-options "-Wmultistatement-macros" } */
   3 /* { dg-do compile } */
   4
   5 #define SWAP(X, Y)      \
   6   tmp = X; /* { dg-warning "macro expands to multiple statements" } */ \
   7   X = Y;                \
   8   Y = tmp
   9
  10 #define BODY_AND_IF(COND, X, Y)  \
  11   if (COND) SWAP (X, Y) /* { dg-message "in expansion of macro .SWAP." } */
  12
  13 void
  14 fn (int x, int y)
  15 {
  16   int tmp;
  17   BODY_AND_IF (1, x, y); /* { dg-message "in expansion of macro .BODY_AND_IF." } */
  18 }