gcc/testsuite/gcc.dg/conv-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "" } */
   3
   4 void f1(long *);
   5 void f2(unsigned long *);
   6
   7 int main()
   8 {
   9   long *lp;
  10   unsigned long *ulp;
  11   char *cp;
  12   unsigned char *ucp;
  13   signed char *scp;
  14
  15   ulp = lp;     /* { dg-warning " pointer targets in assignment differ in signedness" } */
  16   lp = ulp;     /* { dg-warning " pointer targets in assignment differ in signedness" } */
  17   f1(ulp);      /* { dg-warning " differ in signedness" } */
  18   f2(lp);       /* { dg-warning " differ in signedness" } */
  19
  20   cp = ucp;     /* { dg-warning " pointer targets in assignment differ in signedness" } */
  21   cp = scp;     /* { dg-warning " pointer targets in assignment differ in signedness" } */
  22   ucp = scp;    /* { dg-warning " pointer targets in assignment differ in signedness" } */
  23   ucp = cp;     /* { dg-warning " pointer targets in assignment differ in signedness" } */
  24   scp = ucp;    /* { dg-warning " pointer targets in assignment differ in signedness" } */
  25   scp = cp;     /* { dg-warning " pointer targets in assignment differ in signedness" } */
  26 }