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/* { dg-additional-options "-fanalyzer-checker=pattern-test -O2" } */
// TODO: run this at every optimization level
extern void foo(void *);
extern void bar(void *);
void test1(void *ptr)
{
if (ptr) { /* { dg-warning "pattern match on 'ptr != 0'" "ptr != 0" } */
/* { dg-warning "pattern match on 'ptr == 0'" "ptr == 0" { target *-*-* } .-1 } */
foo(ptr);
} else {
bar(ptr);
}
}
void test_2 (void *p, void *q)
{
_Bool tmp1 = p == 0;
_Bool tmp2 = q == 0;
_Bool tmp = tmp1 | tmp2;
/* Verify that we can detect the implied conditions on p and q here. */
if (tmp) /* { dg-line cond_2 } */
return;
foo(p);
/* { dg-warning "pattern match on 'p != 0'" "p != 0" { target *-*-* } cond_2 } */
/* { dg-warning "pattern match on 'p == 0 | q == 0 != 0'" "tmp1 | tmp2 != 0" { target *-*-* } cond_2 } */
/* { dg-warning "pattern match on 'q != 0'" "q != 0" { target *-*-* } cond_2 } */
}
void test_3 (void *p, void *q)
{
_Bool tmp1 = p == 0;
_Bool tmp2 = q == 0;
_Bool tmp = tmp1 & tmp2;
/* Verify that we can detect the implied conditions on p and q here. */
if (tmp) /* { dg-line cond_3 } */
return;
foo(p);
/* { dg-warning "pattern match on 'p == 0'" "p == 0" { target *-*-* } cond_3 } */
/* { dg-warning "pattern match on 'p == 0 & q == 0 == 0'" "tmp1 & tmp2 == 0" { target *-*-* } cond_3 } */
/* { dg-warning "pattern match on 'q == 0'" "q == 0" { target *-*-* } cond_3 } */
}
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