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 M1	\
      11    while (x) /* { dg-message "not guarded by this 'while' claus" } */ \
      12      SWAP (x, y) /* { dg-message "in expansion of macro .SWAP." } */
      13  
      14  #define M2	\
      15    while (x)	\
      16      x++
      17  
      18  #define M3	\
      19    while (x)	\
      20      x++;;
      21  
      22  #define M4	\
      23    while (x) /* { dg-message "not guarded by this 'while' claus" } */ \
      24  L1:		\
      25      SWAP (x, y) /* { dg-message "in expansion of macro .SWAP." } */
      26  
      27  #define INC	\
      28    x++;;
      29  
      30  int x, y, tmp;
      31  
      32  void
      33  fn0 (void)
      34  {
      35    while (x) /* { dg-message "not guarded by this 'while' claus" } */
      36      SWAP (x, y); /* { dg-message "in expansion of macro .SWAP." } */
      37  
      38    while (x) /* { dg-message "not guarded by this 'while' claus" } */
      39  L:
      40      SWAP (x, y); /* { dg-message "in expansion of macro .SWAP." } */
      41    goto L;
      42  }
      43  
      44  void
      45  fn1 (void)
      46  {
      47    M1; /* { dg-message "in expansion of macro .M1." } */
      48    M2;
      49    M3;
      50    M4; /* { dg-message "in expansion of macro .M4." } */
      51    goto L1;
      52  }
      53  
      54  void
      55  fn2 (void)
      56  {
      57    while (x)
      58      INC
      59  
      60    while (x)
      61      ({ x = 10; x++; });
      62  }