1 // PR c++/87582
2 // { dg-do run { target c++11 } }
3 // { dg-options "-Wreturn-local-addr" }
4
5 struct S { int s, t; };
6 S v {1, 2};
7 int a[3] = {1, 2, 3};
8
9 int &
f1()10 f1 ()
11 {
12 auto& [s, t] = v; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
13 return s; // { dg-bogus "reference to local variable '.' returned" }
14 }
15
16 int &
f2()17 f2 ()
18 {
19 S v {1, 2}; // { dg-warning "reference to local variable 'v' returned" }
20 auto& [s, t] = v; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
21 return s;
22 }
23
24 int &
f3()25 f3 ()
26 {
27 auto& [s, t, u] = a; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
28 return s; // { dg-bogus "reference to local variable '.' returned" }
29 }
30
31 int &
f4()32 f4 ()
33 {
34 int a[3] = {1, 2, 3}; // { dg-warning "reference to local variable 'a' returned" }
35 auto& [s, t, u] = a; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
36 return s;
37 }
38
39 int &
f5()40 f5 ()
41 {
42 auto [s, t] = v; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
43 return s; // { dg-warning "reference to local variable 's' returned" "" { target *-*-* } .-1 }
44 }
45
46 int &
f6()47 f6 ()
48 {
49 S v {1, 2};
50 auto [s, t] = v; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
51 return s; // { dg-warning "reference to local variable 's' returned" "" { target *-*-* } .-1 }
52 }
53
54 int &
f7()55 f7 ()
56 {
57 auto [s, t, u] = a; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
58 return s; // { dg-warning "reference to local variable 's' returned" "" { target *-*-* } .-1 }
59 }
60
61 int &
f8()62 f8 ()
63 {
64 int a[3] = {1, 2, 3};
65 auto [s, t, u] = a; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
66 return s; // { dg-warning "reference to local variable 's' returned" "" { target *-*-* } .-1 }
67 }
68
69 int *
f9()70 f9 ()
71 {
72 auto& [s, t] = v; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
73 return &s; // { dg-bogus "address of local variable '.' returned" }
74 }
75
76 int *
f10()77 f10 ()
78 {
79 S v {1, 2}; // { dg-warning "address of local variable 'v' returned" }
80 auto& [s, t] = v; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
81 return &s;
82 }
83
84 int *
f11()85 f11 ()
86 {
87 auto& [s, t, u] = a; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
88 return &s; // { dg-bogus "address of local variable '.' returned" }
89 }
90
91 int *
f12()92 f12 ()
93 {
94 int a[3] = {1, 2, 3}; // { dg-warning "address of local variable 'a' returned" }
95 auto& [s, t, u] = a; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
96 return &s;
97 }
98
99 int *
f13()100 f13 ()
101 {
102 auto [s, t] = v; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
103 return &s; // { dg-warning "address of local variable 's' returned" "" { target *-*-* } .-1 }
104 }
105
106 int *
f14()107 f14 ()
108 {
109 S v {1, 2};
110 auto [s, t] = v; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
111 return &s; // { dg-warning "address of local variable 's' returned" "" { target *-*-* } .-1 }
112 }
113
114 int *
f15()115 f15 ()
116 {
117 auto [s, t, u] = a; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
118 return &s; // { dg-warning "address of local variable 's' returned" "" { target *-*-* } .-1 }
119 }
120
121 int *
f16()122 f16 ()
123 {
124 int a[3] = {1, 2, 3};
125 auto [s, t, u] = a; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
126 return &s; // { dg-warning "address of local variable 's' returned" "" { target *-*-* } .-1 }
127 }
128
129 int
main()130 main ()
131 {
132 if (&f1 () != &v.s || &f3 () != &a[0] || f9 () != &v.s || f11 () != &a[0])
133 __builtin_abort ();
134 }
135