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/* { dg-do run } */
/* { dg-options "-O2 -fdump-tree-optimized" } */
/* Same test as 990128-1.c. */
extern int printf (const char *,...);
extern void abort (void);
struct s { struct s *n; } *p;
struct s ss;
#define MAX 10
struct s sss[MAX];
int count = 0;
void sub( struct s *p, struct s **pp );
int look( struct s *p, struct s **pp );
main()
{
struct s *pp;
struct s *next;
int i;
p = &ss;
next = p;
for ( i = 0; i < MAX; i++ ) {
next->n = &sss[i];
next = next->n;
}
next->n = 0;
sub( p, &pp );
if (count != MAX+2)
abort ();
return( 0 );
}
void sub( struct s *p, struct s **pp )
{
for ( ; look( p, pp ); ) {
if ( p )
p = p->n;
else
break;
}
}
int look( struct s *p, struct s **pp )
{
for ( ; p; p = p->n )
;
*pp = p;
count++;
return( 1 );
}
/* { dg-final { scan-tree-dump "Cleaned-up latch block of loop with single BB" "optimized" { xfail { *-*-* } } } } */
/* { dg-final { cleanup-tree-dump "optimized" } } */
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