gcc/testsuite/gcc.dg/pr59940.c

   1 /* PR c/59940 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wconversion -Woverflow" } */
   4
   5 int f (unsigned int);
   6 typedef int sitype __attribute__((mode(SI)));
   7
   8 int
   9 g (void)
  10 {
  11   sitype si = 12;
  12   unsigned int ui = -1; /* { dg-warning "21:negative integer implicitly converted to unsigned type" } */
  13   unsigned char uc;
  14   ui = si; /* { dg-warning "8:conversion" } */
  15   si = 0x80000000; /* { dg-warning "8:conversion of unsigned constant value to negative integer" } */
  16   si = 3.2f; /* { dg-warning "8:conversion" } */
  17   uc = 256; /* { dg-warning "8:large integer implicitly truncated to unsigned type" } */
  18   si = 0x800000000; /* { dg-warning "8:overflow in implicit constant conversion" } */
  19   return f (si) /* { dg-warning "13:conversion" } */
  20          + f (si); /* { dg-warning "15:conversion" } */
  21 }
  22
  23 int
  24 y (void)
  25 {
  26   f (); /* { dg-error "3:too few arguments to function" } */
  27   g (0xa); /* { dg-error "3:too many arguments to function" } */
  28 }