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// Test -Waddress for testing an address against NULL.
// Origin: Ian Lance Taylor <iant@google.com>
// { dg-do compile }
// { dg-options "-Waddress" }
extern int foo (int);
int i;
void
bar (int a)
{
lab:
if (foo) // { dg-warning "always evaluate as|never be NULL" "correct warning" }
foo (0);
if (foo (1))
;
if (&i) // { dg-warning "always evaluate as|never be NULL" "correct warning" }
foo (2);
if (i)
foo (3);
if (&a) // { dg-warning "always evaluate as|never be NULL" "correct warning" }
foo (4);
if (a)
foo (5);
if (&&lab) // { dg-warning "always evaluate as|never be NULL" "correct warning" }
foo (6);
if (foo == 0) // { dg-warning "never be NULL" "correct warning" }
foo (7);
if (foo (1) == 0)
foo (8);
if (&i == 0) // { dg-warning "never be NULL" "correct warning" }
foo (9);
if (i == 0)
foo (10);
if (&a == 0) // { dg-warning "never be NULL" "correct warning" }
foo (11);
if (a == 0)
foo (12);
if (&&lab == 0) // { dg-warning "never be NULL" "correct warning" }
foo (13);
if (0 == foo) // { dg-warning "never be NULL" "correct warning" }
foo (14);
if (0 == foo (1))
foo (15);
if (0 == &i) // { dg-warning "never be NULL" "correct warning" }
foo (16);
if (0 == i)
foo (17);
if (0 == &a) // { dg-warning "never be NULL" "correct warning" }
foo (18);
if (0 == a)
foo (19);
if (0 == &&lab) // { dg-warning "never be NULL" "correct warning" }
foo (20);
}
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