| /* When comparisons of bit-fields to unsigned constants got shortened, |
| the shortened signed constant was wrongly marked as overflowing, |
| leading to a later integer_zerop failure and misoptimization. |
| |
| Related to bug tree-optimization/16437 but shows the problem on |
| 32-bit systems. */ |
| /* Origin: Joseph Myers <jsm@polyomino.org.uk> */ |
| |
| /* { dg-require-effective-target int32plus } */ |
| |
| extern void abort (void); |
| |
| struct s { int a:12, b:20; }; |
| |
| struct s x = { -123, -456 }; |
| |
| int |
| main (void) |
| { |
| if (x.a != -123U || x.b != -456U) |
| abort (); |
| return 0; |
| } |
