diff options
Diffstat (limited to 'test/SemaCXX/uninitialized.cpp')
-rw-r--r-- | test/SemaCXX/uninitialized.cpp | 713 |
1 files changed, 685 insertions, 28 deletions
diff --git a/test/SemaCXX/uninitialized.cpp b/test/SemaCXX/uninitialized.cpp index 677a141..018b1fe 100644 --- a/test/SemaCXX/uninitialized.cpp +++ b/test/SemaCXX/uninitialized.cpp @@ -1,9 +1,22 @@ // RUN: %clang_cc1 -fsyntax-only -Wall -Wuninitialized -Wno-unused-value -std=c++11 -verify %s +// definitions for std::move +namespace std { +inline namespace foo { +template <class T> struct remove_reference { typedef T type; }; +template <class T> struct remove_reference<T&> { typedef T type; }; +template <class T> struct remove_reference<T&&> { typedef T type; }; + +template <class T> typename remove_reference<T>::type&& move(T&& t); +} +} + int foo(int x); int bar(int* x); int boo(int& x); int far(const int& x); +int moved(int&& x); +int &ref(int x); // Test self-references within initializers which are guaranteed to be // uninitialized. @@ -24,6 +37,20 @@ int k = __alignof__(k); int l = k ? l : l; // expected-warning 2{{variable 'l' is uninitialized when used within its own initialization}} int m = 1 + (k ? m : m); // expected-warning 2{{variable 'm' is uninitialized when used within its own initialization}} int n = -n; // expected-warning {{variable 'n' is uninitialized when used within its own initialization}} +int o = std::move(o); // expected-warning {{variable 'o' is uninitialized when used within its own initialization}} +const int p = std::move(p); // expected-warning {{variable 'p' is uninitialized when used within its own initialization}} +int q = moved(std::move(q)); // expected-warning {{variable 'q' is uninitialized when used within its own initialization}} +int r = std::move((p ? q : (18, r))); // expected-warning {{variable 'r' is uninitialized when used within its own initialization}} +int s = r ?: s; // expected-warning {{variable 's' is uninitialized when used within its own initialization}} +int t = t ?: s; // expected-warning {{variable 't' is uninitialized when used within its own initialization}} +int u = (foo(u), s); // expected-warning {{variable 'u' is uninitialized when used within its own initialization}} +int v = (u += v); // expected-warning {{variable 'v' is uninitialized when used within its own initialization}} +int w = (w += 10); // expected-warning {{variable 'w' is uninitialized when used within its own initialization}} +int x = x++; // expected-warning {{variable 'x' is uninitialized when used within its own initialization}} +int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{variable 'y' is uninitialized when used within its own initialization}} +int z = ++ref(z); // expected-warning {{variable 'z' is uninitialized when used within its own initialization}} +int aa = (ref(aa) += 10); // expected-warning {{variable 'aa' is uninitialized when used within its own initialization}} +int bb = bb ? x : y; // expected-warning {{variable 'bb' is uninitialized when used within its own initialization}} void test_stuff () { int a = a; // no-warning: used to signal intended lack of initialization. @@ -44,6 +71,21 @@ void test_stuff () { int l = k ? l : l; // expected-warning {{variable 'l' is uninitialized when used within its own initialization}} int m = 1 + (k ? m : m); // expected-warning {{'m' is uninitialized when used within its own initialization}} int n = -n; // expected-warning {{variable 'n' is uninitialized when used within its own initialization}} + int o = std::move(o); // expected-warning {{variable 'o' is uninitialized when used within its own initialization}} + const int p = std::move(p); // expected-warning {{variable 'p' is uninitialized when used within its own initialization}} + int q = moved(std::move(q)); // expected-warning {{variable 'q' is uninitialized when used within its own initialization}} + int r = std::move((p ? q : (18, r))); // expected-warning {{variable 'r' is uninitialized when used within its own initialization}} + int s = r ?: s; // expected-warning {{variable 's' is uninitialized when used within its own initialization}} + int t = t ?: s; // expected-warning {{variable 't' is uninitialized when used within its own initialization}} + int u = (foo(u), s); // expected-warning {{variable 'u' is uninitialized when used within its own initialization}} + int v = (u += v); // expected-warning {{variable 'v' is uninitialized when used within its own initialization}} + int w = (w += 10); // expected-warning {{variable 'w' is uninitialized when used within its own initialization}} + int x = x++; // expected-warning {{variable 'x' is uninitialized when used within its own initialization}} + int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{variable 'y' is uninitialized when used within its own initialization}} + int z = ++ref(z); // expected-warning {{variable 'z' is uninitialized when used within its own initialization}} + int aa = (ref(aa) += 10); // expected-warning {{variable 'aa' is uninitialized when used within its own initialization}} + int bb = bb ? x : y; // expected-warning {{variable 'bb' is uninitialized when used within its own initialization}} + for (;;) { int a = a; // no-warning: used to signal intended lack of initialization. @@ -64,9 +106,64 @@ void test_stuff () { int l = k ? l : l; // expected-warning {{variable 'l' is uninitialized when used within its own initialization}} int m = 1 + (k ? m : m); // expected-warning {{'m' is uninitialized when used within its own initialization}} int n = -n; // expected-warning {{variable 'n' is uninitialized when used within its own initialization}} + int o = std::move(o); // expected-warning {{variable 'o' is uninitialized when used within its own initialization}} + const int p = std::move(p); // expected-warning {{variable 'p' is uninitialized when used within its own initialization}} + int q = moved(std::move(q)); // expected-warning {{variable 'q' is uninitialized when used within its own initialization}} + int r = std::move((p ? q : (18, r))); // expected-warning {{variable 'r' is uninitialized when used within its own initialization}} + int s = r ?: s; // expected-warning {{variable 's' is uninitialized when used within its own initialization}} + int t = t ?: s; // expected-warning {{variable 't' is uninitialized when used within its own initialization}} + int u = (foo(u), s); // expected-warning {{variable 'u' is uninitialized when used within its own initialization}} + int v = (u += v); // expected-warning {{variable 'v' is uninitialized when used within its own initialization}} + int w = (w += 10); // expected-warning {{variable 'w' is uninitialized when used within its own initialization}} + int x = x++; // expected-warning {{variable 'x' is uninitialized when used within its own initialization}} + int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{variable 'y' is uninitialized when used within its own initialization}} + int z = ++ref(z); // expected-warning {{variable 'z' is uninitialized when used within its own initialization}} + int aa = (ref(aa) += 10); // expected-warning {{variable 'aa' is uninitialized when used within its own initialization}} + int bb = bb ? x : y; // expected-warning {{variable 'bb' is uninitialized when used within its own initialization}} + } } +// Also test similar constructs in a field's initializer. +struct S { + int x; + int y; + const int z = 5; + void *ptr; + + S(bool (*)[1]) : x(x) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(bool (*)[2]) : x(x + 1) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(bool (*)[3]) : x(x + x) {} // expected-warning 2{{field 'x' is uninitialized when used here}} + S(bool (*)[4]) : x(static_cast<long>(x) + 1) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(bool (*)[5]) : x(foo(x)) {} // expected-warning {{field 'x' is uninitialized when used here}} + + // These don't actually require the value of x and so shouldn't warn. + S(char (*)[1]) : x(sizeof(x)) {} // rdar://8610363 + S(char (*)[2]) : ptr(&ptr) {} + S(char (*)[3]) : x(bar(&x)) {} + S(char (*)[4]) : x(boo(x)) {} + S(char (*)[5]) : x(far(x)) {} + S(char (*)[6]) : x(__alignof__(x)) {} + + S(int (*)[1]) : x(0), y(x ? y : y) {} // expected-warning 2{{field 'y' is uninitialized when used here}} + S(int (*)[2]) : x(0), y(1 + (x ? y : y)) {} // expected-warning 2{{field 'y' is uninitialized when used here}} + S(int (*)[3]) : x(-x) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(int (*)[4]) : x(std::move(x)) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(int (*)[5]) : z(std::move(z)) {} // expected-warning {{field 'z' is uninitialized when used here}} + S(int (*)[6]) : x(moved(std::move(x))) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(int (*)[7]) : x(0), y(std::move((x ? x : (18, y)))) {} // expected-warning {{field 'y' is uninitialized when used here}} + S(int (*)[8]) : x(0), y(x ?: y) {} // expected-warning {{field 'y' is uninitialized when used here}} + S(int (*)[9]) : x(0), y(y ?: x) {} // expected-warning {{field 'y' is uninitialized when used here}} + S(int (*)[10]) : x(0), y((foo(y), x)) {} // expected-warning {{field 'y' is uninitialized when used here}} + S(int (*)[11]) : x(0), y(x += y) {} // expected-warning {{field 'y' is uninitialized when used here}} + S(int (*)[12]) : x(x += 10) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(int (*)[13]) : x(x++) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(int (*)[14]) : x(0), y(((x ? (y, x) : (77, y))++, sizeof(y))) {} // expected-warning {{field 'y' is uninitialized when used here}} + S(int (*)[15]) : x(++ref(x)) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(int (*)[16]) : x((ref(x) += 10)) {} // expected-warning {{field 'x' is uninitialized when used here}} + S(int (*)[17]) : x(0), y(y ? x : x) {} // expected-warning {{field 'y' is uninitialized when used here}} +}; + // Test self-references with record types. class A { // Non-POD class. @@ -76,7 +173,7 @@ class A { static int count; int get() const { return num; } int get2() { return num; } - void set(int x) { num = x; } + int set(int x) { num = x; return num; } static int zero() { return 0; } A() {} @@ -84,13 +181,20 @@ class A { A(int x) {} A(int *x) {} A(A *a) {} + A(A &&a) {} ~A(); + bool operator!(); + bool operator!=(const A&); }; +bool operator!=(int, const A&); + A getA() { return A(); } A getA(int x) { return A(); } A getA(A* a) { return A(); } A getA(A a) { return A(); } +A moveA(A&& a) { return A(); } +A const_refA(const A& a) { return A(); } void setupA(bool x) { A a1; @@ -127,9 +231,36 @@ void setupA(bool x) { A *a26 = new A(a26->get()); // expected-warning {{variable 'a26' is uninitialized when used within its own initialization}} A *a27 = new A(a27->get2()); // expected-warning {{variable 'a27' is uninitialized when used within its own initialization}} A *a28 = new A(a28->num); // expected-warning {{variable 'a28' is uninitialized when used within its own initialization}} + + const A a29(a29); // expected-warning {{variable 'a29' is uninitialized when used within its own initialization}} + const A a30 = a30; // expected-warning {{variable 'a30' is uninitialized when used within its own initialization}} + + A a31 = std::move(a31); // expected-warning {{variable 'a31' is uninitialized when used within its own initialization}} + A a32 = moveA(std::move(a32)); // expected-warning {{variable 'a32' is uninitialized when used within its own initialization}} + A a33 = A(std::move(a33)); // expected-warning {{variable 'a33' is uninitialized when used within its own initialization}} + A a34(std::move(a34)); // expected-warning {{variable 'a34' is uninitialized when used within its own initialization}} + A a35 = std::move(x ? a34 : (37, a35)); // expected-warning {{variable 'a35' is uninitialized when used within its own initialization}} + + A a36 = const_refA(a36); + A a37(const_refA(a37)); + + A a38({a38}); // expected-warning {{variable 'a38' is uninitialized when used within its own initialization}} + A a39 = {a39}; // expected-warning {{variable 'a39' is uninitialized when used within its own initialization}} + A a40 = A({a40}); // expected-warning {{variable 'a40' is uninitialized when used within its own initialization}} + + A a41 = !a41; // expected-warning {{variable 'a41' is uninitialized when used within its own initialization}} + A a42 = !(a42); // expected-warning {{variable 'a42' is uninitialized when used within its own initialization}} + A a43 = a43 != a42; // expected-warning {{variable 'a43' is uninitialized when used within its own initialization}} + A a44 = a43 != a44; // expected-warning {{variable 'a44' is uninitialized when used within its own initialization}} + A a45 = a45 != a45; // expected-warning 2{{variable 'a45' is uninitialized when used within its own initialization}} + A a46 = 0 != a46; // expected-warning {{variable 'a46' is uninitialized when used within its own initialization}} + + A a47(a47.set(a47.num)); // expected-warning 2{{variable 'a47' is uninitialized when used within its own initialization}} + A a48(a47.set(a48.num)); // expected-warning {{variable 'a48' is uninitialized when used within its own initialization}} + A a49(a47.set(a48.num)); } -bool x; +bool cond; A a1; A a2(a1.get()); @@ -149,8 +280,8 @@ A a14 = A(a14); // expected-warning {{variable 'a14' is uninitialized when used A a15 = getA(a15.num); // expected-warning {{variable 'a15' is uninitialized when used within its own initialization}} A a16(&a16.num); // expected-warning {{variable 'a16' is uninitialized when used within its own initialization}} A a17(a17.get2()); // expected-warning {{variable 'a17' is uninitialized when used within its own initialization}} -A a18 = x ? a18 : a17; // expected-warning {{variable 'a18' is uninitialized when used within its own initialization}} -A a19 = getA(x ? a19 : a17); // expected-warning {{variable 'a19' is uninitialized when used within its own initialization}} +A a18 = cond ? a18 : a17; // expected-warning {{variable 'a18' is uninitialized when used within its own initialization}} +A a19 = getA(cond ? a19 : a17); // expected-warning {{variable 'a19' is uninitialized when used within its own initialization}} A a20{a20}; // expected-warning {{variable 'a20' is uninitialized when used within its own initialization}} A a21 = {a21}; // expected-warning {{variable 'a21' is uninitialized when used within its own initialization}} @@ -163,6 +294,101 @@ A *a26 = new A(a26->get()); // expected-warning {{variable 'a26' is uninitial A *a27 = new A(a27->get2()); // expected-warning {{variable 'a27' is uninitialized when used within its own initialization}} A *a28 = new A(a28->num); // expected-warning {{variable 'a28' is uninitialized when used within its own initialization}} +const A a29(a29); // expected-warning {{variable 'a29' is uninitialized when used within its own initialization}} +const A a30 = a30; // expected-warning {{variable 'a30' is uninitialized when used within its own initialization}} + +A a31 = std::move(a31); // expected-warning {{variable 'a31' is uninitialized when used within its own initialization}} +A a32 = moveA(std::move(a32)); // expected-warning {{variable 'a32' is uninitialized when used within its own initialization}} +A a33 = A(std::move(a33)); // expected-warning {{variable 'a33' is uninitialized when used within its own initialization}} +A a34(std::move(a34)); // expected-warning {{variable 'a34' is uninitialized when used within its own initialization}} +A a35 = std::move(x ? a34 : (37, a35)); // expected-warning {{variable 'a35' is uninitialized when used within its own initialization}} + +A a36 = const_refA(a36); +A a37(const_refA(a37)); + +A a38({a38}); // expected-warning {{variable 'a38' is uninitialized when used within its own initialization}} +A a39 = {a39}; // expected-warning {{variable 'a39' is uninitialized when used within its own initialization}} +A a40 = A({a40}); // expected-warning {{variable 'a40' is uninitialized when used within its own initialization}} + +A a41 = !a41; // expected-warning {{variable 'a41' is uninitialized when used within its own initialization}} +A a42 = !(a42); // expected-warning {{variable 'a42' is uninitialized when used within its own initialization}} +A a43 = a43 != a42; // expected-warning {{variable 'a43' is uninitialized when used within its own initialization}} +A a44 = a43 != a44; // expected-warning {{variable 'a44' is uninitialized when used within its own initialization}} +A a45 = a45 != a45; // expected-warning 2{{variable 'a45' is uninitialized when used within its own initialization}} + +A a46 = 0 != a46; // expected-warning {{variable 'a46' is uninitialized when used within its own initialization}} + +A a47(a47.set(a47.num)); // expected-warning 2{{variable 'a47' is uninitialized when used within its own initialization}} +A a48(a47.set(a48.num)); // expected-warning {{variable 'a48' is uninitialized when used within its own initialization}} +A a49(a47.set(a48.num)); + +class T { + A a, a2; + const A c_a; + A* ptr_a; + + T() {} + T(bool (*)[1]) : a() {} + T(bool (*)[2]) : a2(a.get()) {} + T(bool (*)[3]) : a2(a) {} + T(bool (*)[4]) : a(&a) {} + T(bool (*)[5]) : a(a.zero()) {} + T(bool (*)[6]) : a(a.ONE) {} + T(bool (*)[7]) : a(getA()) {} + T(bool (*)[8]) : a2(getA(a.TWO)) {} + T(bool (*)[9]) : a(getA(&a)) {} + T(bool (*)[10]) : a(a.count) {} + + T(bool (*)[11]) : a(a) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[12]) : a(a.get()) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[13]) : a(a.num) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[14]) : a(A(a)) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[15]) : a(getA(a.num)) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[16]) : a(&a.num) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[17]) : a(a.get2()) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[18]) : a2(cond ? a2 : a) {} // expected-warning {{field 'a2' is uninitialized when used here}} + T(bool (*)[19]) : a2(cond ? a2 : a) {} // expected-warning {{field 'a2' is uninitialized when used here}} + T(bool (*)[20]) : a{a} {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[21]) : a({a}) {} // expected-warning {{field 'a' is uninitialized when used here}} + + T(bool (*)[22]) : ptr_a(new A(ptr_a->count)) {} + T(bool (*)[23]) : ptr_a(new A(ptr_a->ONE)) {} + T(bool (*)[24]) : ptr_a(new A(ptr_a->TWO)) {} + T(bool (*)[25]) : ptr_a(new A(ptr_a->zero())) {} + + T(bool (*)[26]) : ptr_a(new A(ptr_a->get())) {} // expected-warning {{field 'ptr_a' is uninitialized when used here}} + T(bool (*)[27]) : ptr_a(new A(ptr_a->get2())) {} // expected-warning {{field 'ptr_a' is uninitialized when used here}} + T(bool (*)[28]) : ptr_a(new A(ptr_a->num)) {} // expected-warning {{field 'ptr_a' is uninitialized when used here}} + + T(bool (*)[29]) : c_a(c_a) {} // expected-warning {{field 'c_a' is uninitialized when used here}} + T(bool (*)[30]) : c_a(A(c_a)) {} // expected-warning {{field 'c_a' is uninitialized when used here}} + + T(bool (*)[31]) : a(std::move(a)) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[32]) : a(moveA(std::move(a))) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[33]) : a(A(std::move(a))) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[34]) : a(A(std::move(a))) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[35]) : a2(std::move(x ? a : (37, a2))) {} // expected-warning {{field 'a2' is uninitialized when used here}} + + T(bool (*)[36]) : a(const_refA(a)) {} + T(bool (*)[37]) : a(A(const_refA(a))) {} + + T(bool (*)[38]) : a({a}) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[39]) : a{a} {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[40]) : a({a}) {} // expected-warning {{field 'a' is uninitialized when used here}} + + T(bool (*)[41]) : a(!a) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[42]) : a(!(a)) {} // expected-warning {{field 'a' is uninitialized when used here}} + T(bool (*)[43]) : a(), a2(a2 != a) {} // expected-warning {{field 'a2' is uninitialized when used here}} + T(bool (*)[44]) : a(), a2(a != a2) {} // expected-warning {{field 'a2' is uninitialized when used here}} + T(bool (*)[45]) : a(a != a) {} // expected-warning 2{{field 'a' is uninitialized when used here}} + T(bool (*)[46]) : a(0 != a) {} // expected-warning {{field 'a' is uninitialized when used here}} + + T(bool (*)[47]) : a2(a2.set(a2.num)) {} // expected-warning 2{{field 'a2' is uninitialized when used here}} + T(bool (*)[48]) : a2(a.set(a2.num)) {} // expected-warning {{field 'a2' is uninitialized when used here}} + T(bool (*)[49]) : a2(a.set(a.num)) {} + +}; + struct B { // POD struct. int x; @@ -173,13 +399,14 @@ B getB() { return B(); }; B getB(int x) { return B(); }; B getB(int *x) { return B(); }; B getB(B *b) { return B(); }; +B moveB(B &&b) { return B(); }; B* getPtrB() { return 0; }; B* getPtrB(int x) { return 0; }; B* getPtrB(int *x) { return 0; }; B* getPtrB(B **b) { return 0; }; -void setupB() { +void setupB(bool x) { B b1; B b2(b1); B b3 = { 5, &b3.x }; @@ -209,6 +436,14 @@ void setupB() { B b17 = { b17.x = 5, b17.y = 0 }; B b18 = { b18.x + 1, b18.y }; // expected-warning 2{{variable 'b18' is uninitialized when used within its own initialization}} + + const B b19 = b19; // expected-warning {{variable 'b19' is uninitialized when used within its own initialization}} + const B b20(b20); // expected-warning {{variable 'b20' is uninitialized when used within its own initialization}} + + B b21 = std::move(b21); // expected-warning {{variable 'b21' is uninitialized when used within its own initialization}} + B b22 = moveB(std::move(b22)); // expected-warning {{variable 'b22' is uninitialized when used within its own initialization}} + B b23 = B(std::move(b23)); // expected-warning {{variable 'b23' is uninitialized when used within its own initialization}} + B b24 = std::move(x ? b23 : (18, b24)); // expected-warning {{variable 'b24' is uninitialized when used within its own initialization}} } B b1; @@ -234,25 +469,50 @@ B* b16 = getPtrB(b16->y); // expected-warning {{variable 'b16' is uninitialized B b17 = { b17.x = 5, b17.y = 0 }; B b18 = { b18.x + 1, b18.y }; // expected-warning 2{{variable 'b18' is uninitialized when used within its own initialization}} - -// Also test similar constructs in a field's initializer. -struct S { - int x; - void *ptr; - - S(bool (*)[1]) : x(x) {} // expected-warning {{field 'x' is uninitialized when used here}} - S(bool (*)[2]) : x(x + 1) {} // expected-warning {{field 'x' is uninitialized when used here}} - S(bool (*)[3]) : x(x + x) {} // expected-warning 2{{field 'x' is uninitialized when used here}} - S(bool (*)[4]) : x(static_cast<long>(x) + 1) {} // expected-warning {{field 'x' is uninitialized when used here}} - S(bool (*)[5]) : x(foo(x)) {} // expected-warning {{field 'x' is uninitialized when used here}} - - // These don't actually require the value of x and so shouldn't warn. - S(char (*)[1]) : x(sizeof(x)) {} // rdar://8610363 - S(char (*)[2]) : ptr(&ptr) {} - S(char (*)[3]) : x(__alignof__(x)) {} - S(char (*)[4]) : x(bar(&x)) {} - S(char (*)[5]) : x(boo(x)) {} - S(char (*)[6]) : x(far(x)) {} +const B b19 = b19; // expected-warning {{variable 'b19' is uninitialized when used within its own initialization}} +const B b20(b20); // expected-warning {{variable 'b20' is uninitialized when used within its own initialization}} + +B b21 = std::move(b21); // expected-warning {{variable 'b21' is uninitialized when used within its own initialization}} +B b22 = moveB(std::move(b22)); // expected-warning {{variable 'b22' is uninitialized when used within its own initialization}} +B b23 = B(std::move(b23)); // expected-warning {{variable 'b23' is uninitialized when used within its own initialization}} +B b24 = std::move(x ? b23 : (18, b24)); // expected-warning {{variable 'b24' is uninitialized when used within its own initialization}} + +class U { + B b1, b2; + B *ptr1, *ptr2; + const B constb = {}; + + U() {} + U(bool (*)[1]) : b1() {} + U(bool (*)[2]) : b2(b1) {} + U(bool (*)[3]) : b1{ 5, &b1.x } {} + U(bool (*)[4]) : b1(getB()) {} + U(bool (*)[5]) : b1(getB(&b1)) {} + U(bool (*)[6]) : b1(getB(&b1.x)) {} + + U(bool (*)[7]) : b1(b1) {} // expected-warning {{field 'b1' is uninitialized when used here}} + U(bool (*)[8]) : b1(getB(b1.x)) {} // expected-warning {{field 'b1' is uninitialized when used here}} + U(bool (*)[9]) : b1(getB(b1.y)) {} // expected-warning {{field 'b1' is uninitialized when used here}} + U(bool (*)[10]) : b1(getB(-b1.x)) {} // expected-warning {{field 'b1' is uninitialized when used here}} + + U(bool (*)[11]) : ptr1(0) {} + U(bool (*)[12]) : ptr1(0), ptr2(ptr1) {} + U(bool (*)[13]) : ptr1(getPtrB()) {} + U(bool (*)[14]) : ptr1(getPtrB(&ptr1)) {} + + U(bool (*)[15]) : ptr1(getPtrB(ptr1->x)) {} // expected-warning {{field 'ptr1' is uninitialized when used here}} + U(bool (*)[16]) : ptr2(getPtrB(ptr2->y)) {} // expected-warning {{field 'ptr2' is uninitialized when used here}} + + U(bool (*)[17]) : b1 { b1.x = 5, b1.y = 0 } {} + U(bool (*)[18]) : b1 { b1.x + 1, b1.y } {} // expected-warning 2{{field 'b1' is uninitialized when used here}} + + U(bool (*)[19]) : constb(constb) {} // expected-warning {{field 'constb' is uninitialized when used here}} + U(bool (*)[20]) : constb(B(constb)) {} // expected-warning {{field 'constb' is uninitialized when used here}} + + U(bool (*)[21]) : b1(std::move(b1)) {} // expected-warning {{field 'b1' is uninitialized when used here}} + U(bool (*)[22]) : b1(moveB(std::move(b1))) {} // expected-warning {{field 'b1' is uninitialized when used here}} + U(bool (*)[23]) : b1(B(std::move(b1))) {} // expected-warning {{field 'b1' is uninitialized when used here}} + U(bool (*)[24]) : b2(std::move(x ? b1 : (18, b2))) {} // expected-warning {{field 'b2' is uninitialized when used here}} }; struct C { char a[100], *e; } car = { .e = car.a }; @@ -360,6 +620,8 @@ namespace { E(char (*)[12]) : a((b + c, c, a)) {} // expected-warning {{field 'a' is uninitialized when used here}} E(char (*)[13]) : a((a, a, a, a)) {} // expected-warning {{field 'a' is uninitialized when used here}} E(char (*)[14]) : a((b, c, c)) {} + E(char (*)[15]) : a(b ?: a) {} // expected-warning {{field 'a' is uninitialized when used here}} + E(char (*)[16]) : a(a ?: b) {} // expected-warning {{field 'a' is uninitialized when used here}} }; struct F { @@ -385,6 +647,11 @@ namespace { G(char (*)[7]) : f3(f3->*f_ptr) {} // expected-warning {{field 'f3' is uninitialized when used here}} G(char (*)[8]) : f3(new F(f3->*ptr)) {} // expected-warning {{field 'f3' is uninitialized when used here}} }; + + struct H { + H() : a(a) {} // expected-warning {{field 'a' is uninitialized when used here}} + const A a; + }; } namespace statics { @@ -406,6 +673,21 @@ namespace statics { static int l = k ? l : l; // expected-warning 2{{variable 'l' is uninitialized when used within its own initialization}} static int m = 1 + (k ? m : m); // expected-warning 2{{variable 'm' is uninitialized when used within its own initialization}} static int n = -n; // expected-warning {{variable 'n' is uninitialized when used within its own initialization}} + static int o = std::move(o); // expected-warning {{variable 'o' is uninitialized when used within its own initialization}} + static const int p = std::move(p); // expected-warning {{variable 'p' is uninitialized when used within its own initialization}} + static int q = moved(std::move(q)); // expected-warning {{variable 'q' is uninitialized when used within its own initialization}} + static int r = std::move((p ? q : (18, r))); // expected-warning {{variable 'r' is uninitialized when used within its own initialization}} + static int s = r ?: s; // expected-warning {{variable 's' is uninitialized when used within its own initialization}} + static int t = t ?: s; // expected-warning {{variable 't' is uninitialized when used within its own initialization}} + static int u = (foo(u), s); // expected-warning {{variable 'u' is uninitialized when used within its own initialization}} + static int v = (u += v); // expected-warning {{variable 'v' is uninitialized when used within its own initialization}} + static int w = (w += 10); // expected-warning {{variable 'w' is uninitialized when used within its own initialization}} + static int x = x++; // expected-warning {{variable 'x' is uninitialized when used within its own initialization}} + static int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{variable 'y' is uninitialized when used within its own initialization}} + static int z = ++ref(z); // expected-warning {{variable 'z' is uninitialized when used within its own initialization}} + static int aa = (ref(aa) += 10); // expected-warning {{variable 'aa' is uninitialized when used within its own initialization}} + static int bb = bb ? x : y; // expected-warning {{variable 'bb' is uninitialized when used within its own initialization}} + void test() { static int a = a; // no-warning: used to signal intended lack of initialization. @@ -426,7 +708,22 @@ namespace statics { static int l = k ? l : l; // expected-warning 2{{static variable 'l' is suspiciously used within its own initialization}} static int m = 1 + (k ? m : m); // expected-warning 2{{static variable 'm' is suspiciously used within its own initialization}} static int n = -n; // expected-warning {{static variable 'n' is suspiciously used within its own initialization}} - for (;;) { + static int o = std::move(o); // expected-warning {{static variable 'o' is suspiciously used within its own initialization}} + static const int p = std::move(p); // expected-warning {{static variable 'p' is suspiciously used within its own initialization}} + static int q = moved(std::move(q)); // expected-warning {{static variable 'q' is suspiciously used within its own initialization}} + static int r = std::move((p ? q : (18, r))); // expected-warning {{static variable 'r' is suspiciously used within its own initialization}} + static int s = r ?: s; // expected-warning {{static variable 's' is suspiciously used within its own initialization}} + static int t = t ?: s; // expected-warning {{static variable 't' is suspiciously used within its own initialization}} + static int u = (foo(u), s); // expected-warning {{static variable 'u' is suspiciously used within its own initialization}} + static int v = (u += v); // expected-warning {{static variable 'v' is suspiciously used within its own initialization}} + static int w = (w += 10); // expected-warning {{static variable 'w' is suspiciously used within its own initialization}} + static int x = x++; // expected-warning {{static variable 'x' is suspiciously used within its own initialization}} + static int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{static variable 'y' is suspiciously used within its own initialization}} + static int z = ++ref(z); // expected-warning {{static variable 'z' is suspiciously used within its own initialization}} + static int aa = (ref(aa) += 10); // expected-warning {{static variable 'aa' is suspiciously used within its own initialization}} + static int bb = bb ? x : y; // expected-warning {{static variable 'bb' is suspiciously used within its own initialization}} + + for (;;) { static int a = a; // no-warning: used to signal intended lack of initialization. static int b = b + 1; // expected-warning {{static variable 'b' is suspiciously used within its own initialization}} static int c = (c + c); // expected-warning 2{{static variable 'c' is suspiciously used within its own initialization}} @@ -445,6 +742,20 @@ namespace statics { static int l = k ? l : l; // expected-warning 2{{static variable 'l' is suspiciously used within its own initialization}} static int m = 1 + (k ? m : m); // expected-warning 2{{static variable 'm' is suspiciously used within its own initialization}} static int n = -n; // expected-warning {{static variable 'n' is suspiciously used within its own initialization}} + static int o = std::move(o); // expected-warning {{static variable 'o' is suspiciously used within its own initialization}} + static const int p = std::move(p); // expected-warning {{static variable 'p' is suspiciously used within its own initialization}} + static int q = moved(std::move(q)); // expected-warning {{static variable 'q' is suspiciously used within its own initialization}} + static int r = std::move((p ? q : (18, r))); // expected-warning {{static variable 'r' is suspiciously used within its own initialization}} + static int s = r ?: s; // expected-warning {{static variable 's' is suspiciously used within its own initialization}} + static int t = t ?: s; // expected-warning {{static variable 't' is suspiciously used within its own initialization}} + static int u = (foo(u), s); // expected-warning {{static variable 'u' is suspiciously used within its own initialization}} + static int v = (u += v); // expected-warning {{static variable 'v' is suspiciously used within its own initialization}} + static int w = (w += 10); // expected-warning {{static variable 'w' is suspiciously used within its own initialization}} + static int x = x++; // expected-warning {{static variable 'x' is suspiciously used within its own initialization}} + static int y = ((s ? (y, v) : (77, y))++, sizeof(y)); // expected-warning {{static variable 'y' is suspiciously used within its own initialization}} + static int z = ++ref(z); // expected-warning {{static variable 'z' is suspiciously used within its own initialization}} + static int aa = (ref(aa) += 10); // expected-warning {{static variable 'aa' is suspiciously used within its own initialization}} + static int bb = bb ? x : y; // expected-warning {{static variable 'bb' is suspiciously used within its own initialization}} } } } @@ -473,13 +784,21 @@ namespace references { int &b(b); // expected-warning{{reference 'b' is not yet bound to a value when used within its own initialization}} int &c = a ? b : c; // expected-warning{{reference 'c' is not yet bound to a value when used within its own initialization}} int &d{d}; // expected-warning{{reference 'd' is not yet bound to a value when used within its own initialization}} + int &e = d ?: e; // expected-warning{{reference 'e' is not yet bound to a value when used within its own initialization}} + int &f = f ?: d; // expected-warning{{reference 'f' is not yet bound to a value when used within its own initialization}} + + int &return_ref1(int); + int &return_ref2(int&); + + int &g = return_ref1(g); // expected-warning{{reference 'g' is not yet bound to a value when used within its own initialization}} + int &h = return_ref2(h); // expected-warning{{reference 'h' is not yet bound to a value when used within its own initialization}} struct S { S() : a(a) {} // expected-warning{{reference 'a' is not yet bound to a value when used here}} int &a; }; - void f() { + void test() { int &a = a; // expected-warning{{reference 'a' is not yet bound to a value when used within its own initialization}} int &b(b); // expected-warning{{reference 'b' is not yet bound to a value when used within its own initialization}} int &c = a ? b : c; // expected-warning{{reference 'c' is not yet bound to a value when used within its own initialization}} @@ -529,6 +848,7 @@ namespace lambdas { } namespace record_fields { + bool x; struct A { A() {} A get(); @@ -541,6 +861,7 @@ namespace record_fields { A const_ref(const A&); A pointer(A*); A normal(A); + A rref(A&&); struct B { A a; @@ -553,9 +874,13 @@ namespace record_fields { B(char (*)[7]) : a(const_ref(a)) {} B(char (*)[8]) : a(pointer(&a)) {} B(char (*)[9]) : a(normal(a)) {} // expected-warning {{uninitialized}} + B(char (*)[10]) : a(std::move(a)) {} // expected-warning {{uninitialized}} + B(char (*)[11]) : a(A(std::move(a))) {} // expected-warning {{uninitialized}} + B(char (*)[12]) : a(rref(std::move(a))) {} // expected-warning {{uninitialized}} + B(char (*)[13]) : a(std::move(x ? a : (25, a))) {} // expected-warning 2{{uninitialized}} }; struct C { - C() {} // expected-note4{{in this constructor}} + C() {} // expected-note9{{in this constructor}} A a1 = a1; // expected-warning {{uninitialized}} A a2 = a2.get(); // expected-warning {{uninitialized}} A a3 = a3.num(); @@ -565,8 +890,13 @@ namespace record_fields { A a7 = const_ref(a7); A a8 = pointer(&a8); A a9 = normal(a9); // expected-warning {{uninitialized}} + const A a10 = a10; // expected-warning {{uninitialized}} + A a11 = std::move(a11); // expected-warning {{uninitialized}} + A a12 = A(std::move(a12)); // expected-warning {{uninitialized}} + A a13 = rref(std::move(a13)); // expected-warning {{uninitialized}} + A a14 = std::move(x ? a13 : (22, a14)); // expected-warning {{uninitialized}} }; - struct D { // expected-note4{{in the implicit default constructor}} + struct D { // expected-note9{{in the implicit default constructor}} A a1 = a1; // expected-warning {{uninitialized}} A a2 = a2.get(); // expected-warning {{uninitialized}} A a3 = a3.num(); @@ -576,6 +906,11 @@ namespace record_fields { A a7 = const_ref(a7); A a8 = pointer(&a8); A a9 = normal(a9); // expected-warning {{uninitialized}} + const A a10 = a10; // expected-warning {{uninitialized}} + A a11 = std::move(a11); // expected-warning {{uninitialized}} + A a12 = A(std::move(a12)); // expected-warning {{uninitialized}} + A a13 = rref(std::move(a13)); // expected-warning {{uninitialized}} + A a14 = std::move(x ? a13 : (22, a14)); // expected-warning {{uninitialized}} }; D d; struct E { @@ -588,6 +923,11 @@ namespace record_fields { A a7 = const_ref(a7); A a8 = pointer(&a8); A a9 = normal(a9); + const A a10 = a10; + A a11 = std::move(a11); + A a12 = A(std::move(a12)); + A a13 = rref(std::move(a13)); + A a14 = std::move(x ? a13 : (22, a14)); }; } @@ -710,6 +1050,20 @@ namespace cross_field_warnings { int d = a + b + c; R() : a(c = 5), b(c), c(a) {} }; + + // FIXME: Use the CFG-based analysis to give a sometimes uninitialized + // warning on y. + struct T { + int x; + int y; + T(bool b) + : x(b ? (y = 5) : (1 + y)), // expected-warning{{field 'y' is uninitialized when used here}} + y(y + 1) {} + T(int b) + : x(!b ? (1 + y) : (y = 5)), // expected-warning{{field 'y' is uninitialized when used here}} + y(y + 1) {} + }; + } namespace base_class { @@ -728,3 +1082,306 @@ namespace base_class { C() : A(y = 4), x(y) {} }; } + +namespace delegating_constructor { + struct A { + A(int); + A(int&, int); + + A(char (*)[1]) : A(x) {} + // expected-warning@-1 {{field 'x' is uninitialized when used here}} + A(char (*)[2]) : A(x, x) {} + // expected-warning@-1 {{field 'x' is uninitialized when used here}} + + A(char (*)[3]) : A(x, 0) {} + + int x; + }; +} + +namespace init_list { + int num = 5; + struct A { int i1, i2; }; + struct B { A a1, a2; }; + + A a1{1,2}; + A a2{a2.i1 + 2}; // expected-warning{{uninitialized}} + A a3 = {a3.i1 + 2}; // expected-warning{{uninitialized}} + A a4 = A{a4.i2 + 2}; // expected-warning{{uninitialized}} + + B b1 = { {}, {} }; + B b2 = { {}, b2.a1 }; + B b3 = { b3.a1 }; // expected-warning{{uninitialized}} + B b4 = { {}, b4.a2} ; // expected-warning{{uninitialized}} + B b5 = { b5.a2 }; // expected-warning{{uninitialized}} + + B b6 = { {b6.a1.i1} }; // expected-warning{{uninitialized}} + B b7 = { {0, b7.a1.i1} }; + B b8 = { {}, {b8.a1.i1} }; + B b9 = { {}, {0, b9.a1.i1} }; + + B b10 = { {b10.a1.i2} }; // expected-warning{{uninitialized}} + B b11 = { {0, b11.a1.i2} }; // expected-warning{{uninitialized}} + B b12 = { {}, {b12.a1.i2} }; + B b13 = { {}, {0, b13.a1.i2} }; + + B b14 = { {b14.a2.i1} }; // expected-warning{{uninitialized}} + B b15 = { {0, b15.a2.i1} }; // expected-warning{{uninitialized}} + B b16 = { {}, {b16.a2.i1} }; // expected-warning{{uninitialized}} + B b17 = { {}, {0, b17.a2.i1} }; + + B b18 = { {b18.a2.i2} }; // expected-warning{{uninitialized}} + B b19 = { {0, b19.a2.i2} }; // expected-warning{{uninitialized}} + B b20 = { {}, {b20.a2.i2} }; // expected-warning{{uninitialized}} + B b21 = { {}, {0, b21.a2.i2} }; // expected-warning{{uninitialized}} + + B b22 = { {b18.a2.i2 + 5} }; + + struct C {int a; int& b; int c; }; + C c1 = { 0, num, 0 }; + C c2 = { 1, num, c2.b }; + C c3 = { c3.b, num }; // expected-warning{{uninitialized}} + C c4 = { 0, c4.b, 0 }; // expected-warning{{uninitialized}} + C c5 = { 0, c5.c, 0 }; + C c6 = { c6.b, num, 0 }; // expected-warning{{uninitialized}} + C c7 = { 0, c7.a, 0 }; + + struct D {int &a; int &b; }; + D d1 = { num, num }; + D d2 = { num, d2.a }; + D d3 = { d3.b, num }; // expected-warning{{uninitialized}} + + // Same as above in member initializer form. + struct Awrapper { + A a1{1,2}; + A a2{a2.i1 + 2}; // expected-warning{{uninitialized}} + A a3 = {a3.i1 + 2}; // expected-warning{{uninitialized}} + A a4 = A{a4.i2 + 2}; // expected-warning{{uninitialized}} + Awrapper() {} // expected-note 3{{in this constructor}} + Awrapper(int) : + a1{1,2}, + a2{a2.i1 + 2}, // expected-warning{{uninitialized}} + a3{a3.i1 + 2}, // expected-warning{{uninitialized}} + a4{a4.i2 + 2} // expected-warning{{uninitialized}} + {} + }; + + struct Bwrapper { + B b1 = { {}, {} }; + B b2 = { {}, b2.a1 }; + B b3 = { b3.a1 }; // expected-warning{{uninitialized}} + B b4 = { {}, b4.a2} ; // expected-warning{{uninitialized}} + B b5 = { b5.a2 }; // expected-warning{{uninitialized}} + + B b6 = { {b6.a1.i1} }; // expected-warning{{uninitialized}} + B b7 = { {0, b7.a1.i1} }; + B b8 = { {}, {b8.a1.i1} }; + B b9 = { {}, {0, b9.a1.i1} }; + + B b10 = { {b10.a1.i2} }; // expected-warning{{uninitialized}} + B b11 = { {0, b11.a1.i2} }; // expected-warning{{uninitialized}} + B b12 = { {}, {b12.a1.i2} }; + B b13 = { {}, {0, b13.a1.i2} }; + + B b14 = { {b14.a2.i1} }; // expected-warning{{uninitialized}} + B b15 = { {0, b15.a2.i1} }; // expected-warning{{uninitialized}} + B b16 = { {}, {b16.a2.i1} }; // expected-warning{{uninitialized}} + B b17 = { {}, {0, b17.a2.i1} }; + + B b18 = { {b18.a2.i2} }; // expected-warning{{uninitialized}} + B b19 = { {0, b19.a2.i2} }; // expected-warning{{uninitialized}} + B b20 = { {}, {b20.a2.i2} }; // expected-warning{{uninitialized}} + B b21 = { {}, {0, b21.a2.i2} }; // expected-warning{{uninitialized}} + + B b22 = { {b18.a2.i2 + 5} }; + Bwrapper() {} // expected-note 13{{in this constructor}} + Bwrapper(int) : + b1{ {}, {} }, + b2{ {}, b2.a1 }, + b3{ b3.a1 }, // expected-warning{{uninitialized}} + b4{ {}, b4.a2}, // expected-warning{{uninitialized}} + b5{ b5.a2 }, // expected-warning{{uninitialized}} + + b6{ {b6.a1.i1} }, // expected-warning{{uninitialized}} + b7{ {0, b7.a1.i1} }, + b8{ {}, {b8.a1.i1} }, + b9{ {}, {0, b9.a1.i1} }, + + b10{ {b10.a1.i2} }, // expected-warning{{uninitialized}} + b11{ {0, b11.a1.i2} }, // expected-warning{{uninitialized}} + b12{ {}, {b12.a1.i2} }, + b13{ {}, {0, b13.a1.i2} }, + + b14{ {b14.a2.i1} }, // expected-warning{{uninitialized}} + b15{ {0, b15.a2.i1} }, // expected-warning{{uninitialized}} + b16{ {}, {b16.a2.i1} }, // expected-warning{{uninitialized}} + b17{ {}, {0, b17.a2.i1} }, + + b18{ {b18.a2.i2} }, // expected-warning{{uninitialized}} + b19{ {0, b19.a2.i2} }, // expected-warning{{uninitialized}} + b20{ {}, {b20.a2.i2} }, // expected-warning{{uninitialized}} + b21{ {}, {0, b21.a2.i2} }, // expected-warning{{uninitialized}} + + b22{ {b18.a2.i2 + 5} } + {} + }; + + struct Cwrapper { + C c1 = { 0, num, 0 }; + C c2 = { 1, num, c2.b }; + C c3 = { c3.b, num }; // expected-warning{{uninitialized}} + C c4 = { 0, c4.b, 0 }; // expected-warning{{uninitialized}} + C c5 = { 0, c5.c, 0 }; + C c6 = { c6.b, num, 0 }; // expected-warning{{uninitialized}} + C c7 = { 0, c7.a, 0 }; + + Cwrapper() {} // expected-note 3{{in this constructor}} + Cwrapper(int) : + c1{ 0, num, 0 }, + c2{ 1, num, c2.b }, + c3{ c3.b, num }, // expected-warning{{uninitialized}} + c4{ 0, c4.b, 0 }, // expected-warning{{uninitialized}} + c5{ 0, c5.c, 0 }, + c6{ c6.b, num, 0 }, // expected-warning{{uninitialized}} + c7{ 0, c7.a, 0 } + {} + }; + + struct Dwrapper { + D d1 = { num, num }; + D d2 = { num, d2.a }; + D d3 = { d3.b, num }; // expected-warning{{uninitialized}} + Dwrapper() {} // expected-note{{in this constructor}} + Dwrapper(int) : + d1{ num, num }, + d2{ num, d2.a }, + d3{ d3.b, num } // expected-warning{{uninitialized}} + {} + }; +} + +namespace template_class { +class Foo { + public: + int *Create() { return nullptr; } +}; + +template <typename T> +class A { +public: + // Don't warn on foo here. + A() : ptr(foo->Create()) {} + +private: + Foo *foo = new Foo; + int *ptr; +}; + +template <typename T> +class B { +public: + // foo is uninitialized here, but class B is never instantiated. + B() : ptr(foo->Create()) {} + +private: + Foo *foo; + int *ptr; +}; + +template <typename T> +class C { +public: + C() : ptr(foo->Create()) {} + // expected-warning@-1 {{field 'foo' is uninitialized when used here}} +private: + Foo *foo; + int *ptr; +}; + +C<int> c; +// expected-note@-1 {{in instantiation of member function 'template_class::C<int>::C' requested here}} + +} + +namespace base_class_access { +struct A { + A(); + A(int); + + int i; + int foo(); + + static int bar(); +}; + +struct B : public A { + B(int (*)[1]) : A() {} + B(int (*)[2]) : A(bar()) {} + + B(int (*)[3]) : A(i) {} + // expected-warning@-1 {{base class 'base_class_access::A' is uninitialized when used here to access 'base_class_access::A::i'}} + + B(int (*)[4]) : A(foo()) {} + // expected-warning@-1 {{base_class_access::A' is uninitialized when used here to access 'base_class_access::A::foo'}} +}; + +struct C { + C(int) {} +}; + +struct D : public C, public A { + D(int (*)[1]) : C(0) {} + D(int (*)[2]) : C(bar()) {} + + D(int (*)[3]) : C(i) {} + // expected-warning@-1 {{base class 'base_class_access::A' is uninitialized when used here to access 'base_class_access::A::i'}} + + D(int (*)[4]) : C(foo()) {} + // expected-warning@-1 {{base_class_access::A' is uninitialized when used here to access 'base_class_access::A::foo'}} +}; + +} + +namespace value { +template <class T> T move(T t); +template <class T> T notmove(T t); +} +namespace lvalueref { +template <class T> T move(T& t); +template <class T> T notmove(T& t); +} +namespace rvalueref { +template <class T> T move(T&& t); +template <class T> T notmove(T&& t); +} + +namespace move_test { +int a1 = std::move(a1); // expected-warning {{uninitialized}} +int a2 = value::move(a2); // expected-warning {{uninitialized}} +int a3 = value::notmove(a3); // expected-warning {{uninitialized}} +int a4 = lvalueref::move(a4); +int a5 = lvalueref::notmove(a5); +int a6 = rvalueref::move(a6); +int a7 = rvalueref::notmove(a7); + +void test() { + int a1 = std::move(a1); // expected-warning {{uninitialized}} + int a2 = value::move(a2); // expected-warning {{uninitialized}} + int a3 = value::notmove(a3); // expected-warning {{uninitialized}} + int a4 = lvalueref::move(a4); + int a5 = lvalueref::notmove(a5); + int a6 = rvalueref::move(a6); + int a7 = rvalueref::notmove(a7); +} + +class A { + int a; + A(int (*) [1]) : a(std::move(a)) {} // expected-warning {{uninitialized}} + A(int (*) [2]) : a(value::move(a)) {} // expected-warning {{uninitialized}} + A(int (*) [3]) : a(value::notmove(a)) {} // expected-warning {{uninitialized}} + A(int (*) [4]) : a(lvalueref::move(a)) {} + A(int (*) [5]) : a(lvalueref::notmove(a)) {} + A(int (*) [6]) : a(rvalueref::move(a)) {} + A(int (*) [7]) : a(rvalueref::notmove(a)) {} +}; +} |