| 1 | // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify -std=c++11 %s |
| 2 | |
| 3 | namespace PR26599 { |
| 4 | template <typename> |
| 5 | struct S; |
| 6 | |
| 7 | struct I {}; |
| 8 | |
| 9 | template <typename T> |
| 10 | void *&non_pointer() { |
| 11 | void *&r = S<T>()[I{}]; |
| 12 | return r; |
| 13 | } |
| 14 | |
| 15 | template <typename T> |
| 16 | void *&pointer() { |
| 17 | void *&r = S<T>()[nullptr]; |
| 18 | return r; |
| 19 | } |
| 20 | } |
| 21 | |
| 22 | namespace LocalTemporary { |
| 23 | |
| 24 | template <class T> |
| 25 | class QMap { |
| 26 | public: |
| 27 | T value(const T &t = T()) const { |
| 28 | return t; |
| 29 | } |
| 30 | }; |
| 31 | |
| 32 | struct A {}; |
| 33 | |
| 34 | void test() { |
| 35 | QMap<A *> map; |
| 36 | map.value(); |
| 37 | } |
| 38 | |
| 39 | typedef int* ptr; |
| 40 | ptr int1(const ptr &p = ptr()) { |
| 41 | return (p); |
| 42 | } |
| 43 | |
| 44 | ptr int2(const ptr &p = nullptr) { |
| 45 | return p; |
| 46 | } |
| 47 | |
| 48 | ptr int3() { |
| 49 | const ptr &p = ptr(); |
| 50 | return p; |
| 51 | } |
| 52 | |
| 53 | const int *int4(const int &x = 5) { |
| 54 | return &x; |
| 55 | } |
| 56 | |
| 57 | const int *int5(const int &x) { |
| 58 | return &x; |
| 59 | } |
| 60 | |
| 61 | const int *int6() { |
| 62 | const int &x = 11; //expected-note{{binding reference variable 'x' here}} |
| 63 | return &x; //expected-warning{{returning address of local temporary object}} |
| 64 | } |
| 65 | |
| 66 | const int *int7(int x) { |
| 67 | const int &x2 = x; // expected-note{{binding reference variable 'x2' here}} |
| 68 | return &x2; // expected-warning{{address of stack memory associated with parameter 'x' returned}} |
| 69 | } |
| 70 | |
| 71 | const int *int8(const int &x = 5) { |
| 72 | const int &x2 = x; |
| 73 | return &x2; |
| 74 | } |
| 75 | |
| 76 | const int *int9() { |
| 77 | const int &x = 5; // expected-note{{binding reference variable 'x' here}} |
| 78 | const int &x2 = x; // expected-note{{binding reference variable 'x2' here}} |
| 79 | return &x2; // expected-warning{{returning address of local temporary object}} |
| 80 | } |
| 81 | } |
| 82 | |