gcc/testsuite/gcc.dg/fixed-point/int-warning.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-std=gnu99 -O2" } */
   3
   4 /* N1169 Conversion from fixed-point to integer.
   5    Test if GCC warns when overflow or underflow.  */
   6
   7 signed char sc;
   8 unsigned char uc;
   9
  10 void test()
  11 {
  12   sc = 500k; /* { dg-warning "overflow in conversion" } */
  13   sc = -500k; /* { dg-warning "overflow in conversion" } */
  14   sc = 500lk; /* { dg-warning "overflow in conversion" } */
  15   sc = -500lk; /* { dg-warning "overflow in conversion" } */
  16   sc = 500llk; /* { dg-warning "overflow in conversion" } */
  17   sc = -500llk; /* { dg-warning "overflow in conversion" } */
  18   uc = 500k; /* { dg-warning "overflow in conversion" } */
  19   uc = -500k; /* { dg-warning "overflow in conversion" } */
  20   uc = 500lk; /* { dg-warning "overflow in conversion" } */
  21   uc = -500lk; /* { dg-warning "overflow in conversion" } */
  22   uc = 500llk; /* { dg-warning "overflow in conversion" } */
  23   uc = -500llk; /* { dg-warning "overflow in conversion" } */
  24 }