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/* PR tree-optimization/41841 */
/* { dg-do compile } */
/* { dg-options "-O -fipa-struct-reorg -fwhole-program -fipa-cp" } */
 
typedef struct S *T;
typedef struct { } *U;
extern int f1 (void);
 
static void
f3 (U x, int y)
{
  T a = (T) x;
  y && f1 ();
}
 
static void
f2 (T x)
{
  f3 ((U) x, 1);
}
 
void *volatile a __attribute__((used)) = f2;