view gcc/testsuite/gcc.dg/tree-ssa/pr21582.c @ 158:494b0b89df80 default tip

...
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 04ced10e8804
children
line wrap: on
line source

/* { dg-do link }  */
/* { dg-options "-O2 -fdump-tree-vrp1" }  */

void link_error (void);

static inline void do_thing(char *s, int *p, char *q)
{
  	/* This should be folded away.  */
        if (s == 0 || q == 0)
                link_error ();

	/* This should not be folded as 'p' is not marked nonnull.  */
	if (p)
	  	*p = 3;
}

void __attribute__((nonnull (1, 3))) do_other_thing(char *s, int *p, char *q)
{
        do_thing(s, p, q);
}

int i;

int
main()
{
  do_other_thing ("xxx", &i, "yyy");
}

/* { dg-final { scan-tree-dump-times "Folding predicate p_.*" 0 "vrp1" } } */