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/* { dg-do compile } */
/* PR c/16531 */
/* { dg-options "-O2 -fdelete-null-pointer-checks -Wnull-dereference" } */
/* { dg-skip-if "" keeps_null_pointer_checks } */
#ifndef __cplusplus
#define NULL (void *)0
#else
#define NULL nullptr
#endif
struct t
{
int bar;
};
struct t2
{
struct t *s;
};
void test1 ()
{
struct t *s = NULL;
s->bar = 1; /* { dg-warning "null" } */
}
void test2 (struct t *s)
{
if (s == NULL && s->bar > 2) /* { dg-warning "null" } */
return;
s->bar = 3;
}
void test3 (struct t *s)
{
if (s != NULL || s->bar > 2) /* { dg-warning "null" } */
return;
s->bar = 3; /* { dg-warning "null" } */
}
int test4 (struct t *s)
{
if (s != NULL && s->bar > 2) /* { dg-bogus "null" } */
return 1;
return 0;
}
int test5 (struct t *s)
{
if (s == NULL || s->bar > 2) /* { dg-bogus "null" } */
return 1;
return 0;
}
int test6 (struct t2 *s)
{
if (s->s == 0 && s->s->bar == 0) /* { dg-warning "null" } */
return 1;
return 0;
}
int test7 (struct t *s)
{
s = 0;
return s->bar; /* { dg-warning "null" } */
}
int test8 ()
{
return ((struct t *)0)->bar; /* { dg-warning "null" } */
}
void test9 (struct t **s)
{
if (s == 0)
*s = 0; /* { dg-warning "null" } */
}
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