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// RUN: %clang_cc1 -fsyntax-only -Wnon-pod-memset -verify %s
extern void *memset(void *, int, unsigned);
// Several POD types that should not warn.
struct S1 {} s1;
struct S2 { int x; } s2;
struct S3 { float x, y; S1 s[4]; void (*f)(S1**); } s3;
// We use the C++11 concept of POD for this warning, so ensure a non-aggregate
// still warns.
class C1 {
int x, y, z;
public:
void foo() {}
} c1;
// Non-POD types that should warn.
struct X1 { X1(); } x1;
struct X2 { ~X2(); } x2;
struct X3 { virtual void f(); } x3;
struct X4 : X2 {} x4;
struct X5 : virtual S1 {} x5;
void test_warn() {
memset(&x1, 0, sizeof x1); // \
// expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
// expected-note {{explicitly cast the pointer to silence this warning}}
memset(&x2, 0, sizeof x2); // \
// expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
// expected-note {{explicitly cast the pointer to silence this warning}}
memset(&x3, 0, sizeof x3); // \
// expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
// expected-note {{explicitly cast the pointer to silence this warning}}
memset(&x4, 0, sizeof x4); // \
// expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
// expected-note {{explicitly cast the pointer to silence this warning}}
memset(&x5, 0, sizeof x5); // \
// expected-warning {{destination for this memset call is a pointer to a non-POD type}} \
// expected-note {{explicitly cast the pointer to silence this warning}}
}
void test_nowarn(void *void_ptr) {
int i, *iptr;
float y;
char c;
memset(&i, 0, sizeof i);
memset(&iptr, 0, sizeof iptr);
memset(&y, 0, sizeof y);
memset(&c, 0, sizeof c);
memset(void_ptr, 0, 42);
memset(&s1, 0, sizeof s1);
memset(&s2, 0, sizeof s2);
memset(&s3, 0, sizeof s3);
memset(&c1, 0, sizeof c1);
// Unevaluated code shouldn't warn.
(void)sizeof memset(&x1, 0, sizeof x1);
// Dead code shouldn't warn.
if (false) memset(&x1, 0, sizeof x1);
}
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