| // { dg-do run } |
| // { dg-options "-ansi -pedantic-errors -fsigned-bitfields" } |
| |
| // Copyright (C) 2001 Free Software Foundation, Inc. |
| // Contributed by Nathan Sidwell 15 Dec 2001 <nathan@codesourcery.com> |
| |
| typedef int Int; |
| typedef signed int SInt; |
| typedef unsigned int UInt; |
| |
| struct A |
| { |
| SInt bitS : 1; // signed |
| UInt bitU : 1; // unsigned |
| Int bit : 1; // signedness by -f{signed,unsigned}-bitfields |
| }; |
| |
| int main () |
| { |
| A a; |
| |
| a.bitS = 1; // { dg-warning "overflow" } |
| a.bitU = 1; |
| a.bit = 1; // { dg-warning "overflow" } |
| |
| if (a.bitS != -1) |
| return 1; |
| if (a.bitU != 1) |
| return 2; |
| if (a.bit != -1) |
| return 3; |
| |
| return 0; |
| } |
