gcc/testsuite/gcc.dg/pr35701.c

   1 /* PR 35701 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wconversion -Wsign-conversion" } */
   4 /* { dg-require-effective-target int32plus } */
   5
   6 typedef struct _my_struct_t {
   7   unsigned int small:1;
   8   unsigned int big:31;
   9 } my_struct_t, *my_struct_p_t;
  10
  11 void
  12 my_func1(unsigned int sm, unsigned int bi, my_struct_p_t msp)
  13 {
  14   msp->small = sm; /* { dg-warning "conversion" } */
  15   msp->big = bi; /* { dg-warning "conversion" } */
  16 }
  17
  18 void
  19 my_func2(unsigned int sm, unsigned int bi, my_struct_p_t msp)
  20 {
  21   msp->small = sm & 1U;
  22   msp->big = bi & 0x7fffffffU;
  23 }
  24
  25 unsigned short
  26 my_func3(unsigned int sm)
  27 {
  28   unsigned short res;
  29   res = sm & 0xff20U;
  30   return res;
  31 }