blob: 42b9f077a1f5add675e55a79f152a92c3dde946b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
// { dg-do compile }
// { dg-options "-O2 -fstrict-aliasing -fdump-tree-optimized" }
// Test that placement new does not introduce an unnecessary memory
// barrier.
// See PR 29286.
typedef __SIZE_TYPE__ size_t;
inline void* operator new(size_t, void* __p) throw() { return __p; }
template <class T, int D>
class Vector
{
public:
Vector()
{
for (int i = 0; i < D; ++i)
new (&x_m[i]) T();
}
T& operator[](int i) { return x_m[i]; }
private:
T x_m[D];
};
void foo(Vector<float, 3> *m)
{
Vector<float, 3> v;
v[0] = 1.0;
v[1] = 2.0;
v[3] = 3.0;
*m = v;
}
// { dg-final { scan-tree-dump-times "= 0\.0" 1 "optimized" } }
// { dg-final { cleanup-tree-dump "optimized" } }
|
