635 lines
18 KiB
C++
635 lines
18 KiB
C++
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// RUN: %clang_cc1 -fsyntax-only -verify %s -triple=i686-pc-linux-gnu -Wno-new-returns-null
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// RUN: %clang_cc1 -fsyntax-only -verify %s -triple=i686-pc-linux-gnu -Wno-new-returns-null -std=c++98
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// RUN: %clang_cc1 -fsyntax-only -verify %s -triple=i686-pc-linux-gnu -Wno-new-returns-null -std=c++11
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// RUN: %clang_cc1 -fsyntax-only -verify %s -triple=i686-pc-linux-gnu -Wno-new-returns-null -std=c++14
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#include <stddef.h>
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#if __cplusplus >= 201103L
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// expected-note@+2 {{candidate constructor (the implicit move constructor) not viable}}
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#endif
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struct S // expected-note {{candidate}}
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{
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S(int, int, double); // expected-note {{candidate}}
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S(double, int); // expected-note 2 {{candidate}}
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S(float, int); // expected-note 2 {{candidate}}
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};
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struct T; // expected-note{{forward declaration of 'T'}}
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struct U
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{
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// A special new, to verify that the global version isn't used.
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void* operator new(size_t, S*); // expected-note {{candidate}}
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};
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struct V : U
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{
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};
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inline void operator delete(void *); // expected-warning {{replacement function 'operator delete' cannot be declared 'inline'}}
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__attribute__((used))
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inline void *operator new(size_t) { // no warning, due to __attribute__((used))
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return 0; // expected-warning {{null returned from function that requires a non-null return value}}
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}
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// PR5823
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void* operator new(const size_t); // expected-note 2 {{candidate}}
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void* operator new(size_t, int*); // expected-note 3 {{candidate}}
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void* operator new(size_t, float*); // expected-note 3 {{candidate}}
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void* operator new(size_t, S); // expected-note 2 {{candidate}}
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struct foo { };
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void good_news()
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{
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int *pi = new int;
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float *pf = new (pi) float();
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pi = new int(1);
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pi = new int('c');
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const int *pci = new const int();
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S *ps = new S(1, 2, 3.4);
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ps = new (pf) (S)(1, 2, 3.4);
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S *(*paps)[2] = new S*[*pi][2];
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typedef int ia4[4];
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ia4 *pai = new (int[3][4]);
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pi = ::new int;
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U *pu = new (ps) U;
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V *pv = new (ps) V;
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pi = new (S(1.0f, 2)) int;
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(void)new int[true];
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// PR7147
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typedef int a[2];
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foo* f1 = new foo;
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foo* f2 = new foo[2];
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typedef foo x[2];
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typedef foo y[2][2];
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x* f3 = new y;
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#if __cplusplus >= 201103L
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(void)new int[]{};
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(void)new int[]{1, 2, 3};
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(void)new char[]{"hello"};
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#endif
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}
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struct abstract {
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virtual ~abstract() = 0;
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};
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void bad_news(int *ip)
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{
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int i = 1; // expected-note 2{{here}}
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(void)new; // expected-error {{expected a type}}
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(void)new 4; // expected-error {{expected a type}}
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(void)new () int; // expected-error {{expected expression}}
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(void)new int[1.1];
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#if __cplusplus <= 199711L
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// expected-error@-2 {{array size expression must have integral or enumeration type, not 'double'}}
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#elif __cplusplus <= 201103L
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// expected-error@-4 {{array size expression must have integral or unscoped enumeration type, not 'double'}}
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#else
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// expected-warning@-6 {{implicit conversion from 'double' to 'unsigned int' changes value from 1.1 to 1}}
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#endif
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(void)new int[1][i]; // expected-note {{read of non-const variable 'i' is not allowed in a constant expression}}
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(void)new (int[1][i]); // expected-note {{read of non-const variable 'i' is not allowed in a constant expression}}
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#if __cplusplus <= 201103L
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// expected-error@-3 {{only the first dimension}}
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// expected-error@-3 {{only the first dimension}}
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#else
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// expected-error@-6 {{array size is not a constant expression}}
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// expected-error@-6 {{array size is not a constant expression}}
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#endif
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(void)new (int[i]); // expected-warning {{when type is in parentheses}}
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(void)new int(*(S*)0); // expected-error {{no viable conversion from 'S' to 'int'}}
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(void)new int(1, 2); // expected-error {{excess elements in scalar initializer}}
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(void)new S(1); // expected-error {{no matching constructor}}
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(void)new S(1, 1); // expected-error {{call to constructor of 'S' is ambiguous}}
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(void)new const int; // expected-error {{default initialization of an object of const type 'const int'}}
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(void)new float*(ip); // expected-error {{cannot initialize a new value of type 'float *' with an lvalue of type 'int *'}}
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// Undefined, but clang should reject it directly.
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(void)new int[-1];
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#if __cplusplus <= 201103L
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// expected-error@-2 {{array size is negative}}
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#else
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// expected-error@-4 {{array is too large}}
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#endif
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(void)new int[2000000000]; // expected-error {{array is too large}}
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(void)new int[*(S*)0];
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#if __cplusplus <= 199711L
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// expected-error@-2 {{array size expression must have integral or enumeration type, not 'S'}}
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#elif __cplusplus <= 201103L
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// expected-error@-4 {{array size expression must have integral or unscoped enumeration type, not 'S'}}
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#else
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// expected-error@-6 {{converting 'S' to incompatible type}}
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#endif
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(void)::S::new int; // expected-error {{expected unqualified-id}}
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(void)new (0, 0) int; // expected-error {{no matching function for call to 'operator new'}}
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(void)new (0L) int; // expected-error {{call to 'operator new' is ambiguous}}
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// This must fail, because the member version shouldn't be found.
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(void)::new ((S*)0) U; // expected-error {{no matching function for call to 'operator new'}}
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// This must fail, because any member version hides all global versions.
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(void)new U; // expected-error {{no matching function for call to 'operator new'}}
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(void)new (int[]); // expected-error {{array size must be specified in new expression with no initializer}}
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(void)new int&; // expected-error {{cannot allocate reference type 'int &' with new}}
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(void)new int[]; // expected-error {{array size must be specified in new expression with no initializer}}
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(void)new int[](); // expected-error {{cannot determine allocated array size from initializer}}
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// FIXME: This is a terrible diagnostic.
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#if __cplusplus < 201103L
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(void)new int[]{}; // expected-error {{array size must be specified in new expression with no initializer}}
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#endif
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}
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void good_deletes()
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{
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delete (int*)0;
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delete [](int*)0;
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delete (S*)0;
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::delete (int*)0;
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}
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void bad_deletes()
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{
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delete 0; // expected-error {{cannot delete expression of type 'int'}}
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delete [0] (int*)0;
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#if __cplusplus <= 199711L
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// expected-error@-2 {{expected expression}}
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#else
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// expected-error@-4 {{expected variable name or 'this' in lambda capture list}}
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#endif
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delete (void*)0; // expected-warning {{cannot delete expression with pointer-to-'void' type 'void *'}}
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delete (T*)0; // expected-warning {{deleting pointer to incomplete type}}
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::S::delete (int*)0; // expected-error {{expected unqualified-id}}
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}
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struct X0 { };
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struct X1 {
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operator int*();
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operator float();
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};
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struct X2 {
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operator int*(); // expected-note {{conversion}}
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operator float*(); // expected-note {{conversion}}
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};
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void test_delete_conv(X0 x0, X1 x1, X2 x2) {
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delete x0; // expected-error{{cannot delete}}
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delete x1;
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delete x2; // expected-error{{ambiguous conversion of delete expression of type 'X2' to a pointer}}
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}
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// PR4782
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class X3 {
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public:
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static void operator delete(void * mem, size_t size);
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};
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class X4 {
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public:
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static void release(X3 *x);
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static void operator delete(void * mem, size_t size);
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};
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void X4::release(X3 *x) {
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delete x;
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}
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class X5 {
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public:
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void Destroy() const { delete this; }
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};
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class Base {
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public:
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static void *operator new(signed char) throw(); // expected-error {{'operator new' takes type size_t}}
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static int operator new[] (size_t) throw(); // expected-error {{operator new[]' must return type 'void *'}}
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};
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class Tier {};
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class Comp : public Tier {};
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class Thai : public Base {
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public:
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Thai(const Tier *adoptDictionary);
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};
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void loadEngineFor() {
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const Comp *dict;
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new Thai(dict);
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}
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template <class T> struct TBase {
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void* operator new(T size, int); // expected-error {{'operator new' cannot take a dependent type as first parameter; use size_t}}
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};
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TBase<int> t1;
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class X6 {
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public:
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static void operator delete(void*, int); // expected-note {{member found by ambiguous name lookup}}
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};
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class X7 {
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public:
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static void operator delete(void*, int); // expected-note {{member found by ambiguous name lookup}}
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};
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class X8 : public X6, public X7 {
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};
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void f(X8 *x8) {
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delete x8; // expected-error {{member 'operator delete' found in multiple base classes of different types}}
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}
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class X9 {
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public:
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static void operator delete(void*, int); // expected-note {{'operator delete' declared here}}
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static void operator delete(void*, float); // expected-note {{'operator delete' declared here}}
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};
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void f(X9 *x9) {
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delete x9; // expected-error {{no suitable member 'operator delete' in 'X9'}}
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}
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struct X10 {
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virtual ~X10();
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#if __cplusplus >= 201103L
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// expected-note@-2 {{overridden virtual function is here}}
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#endif
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};
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struct X11 : X10 {
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#if __cplusplus <= 199711L
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// expected-error@-2 {{no suitable member 'operator delete' in 'X11'}}
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#else
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// expected-error@-4 {{deleted function '~X11' cannot override a non-deleted function}}
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// expected-note@-5 2 {{virtual destructor requires an unambiguous, accessible 'operator delete'}}
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#endif
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void operator delete(void*, int);
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#if __cplusplus <= 199711L
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// expected-note@-2 {{'operator delete' declared here}}
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#endif
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};
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void f() {
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X11 x11;
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#if __cplusplus <= 199711L
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// expected-note@-2 {{implicit destructor for 'X11' first required here}}
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#else
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// expected-error@-4 {{attempt to use a deleted function}}
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#endif
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}
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struct X12 {
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void* operator new(size_t, void*);
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};
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struct X13 : X12 {
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using X12::operator new;
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};
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static void* f(void* g)
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{
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return new (g) X13();
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}
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class X14 {
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public:
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static void operator delete(void*, const size_t);
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};
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void f(X14 *x14a, X14 *x14b) {
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delete x14a;
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}
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class X15 {
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private:
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X15(); // expected-note {{declared private here}}
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~X15(); // expected-note {{declared private here}}
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};
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void f(X15* x) {
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new X15(); // expected-error {{calling a private constructor}}
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delete x; // expected-error {{calling a private destructor}}
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}
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namespace PR5918 { // Look for template operator new overloads.
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struct S { template<typename T> static void* operator new(size_t, T); };
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void test() {
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(void)new(0) S;
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}
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}
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namespace Test1 {
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void f() {
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(void)new int[10](1, 2); // expected-error {{array 'new' cannot have initialization arguments}}
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typedef int T[10];
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(void)new T(1, 2); // expected-error {{array 'new' cannot have initialization arguments}}
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}
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template<typename T>
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void g(unsigned i) {
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(void)new T[1](i); // expected-error {{array 'new' cannot have initialization arguments}}
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}
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template<typename T>
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void h(unsigned i) {
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(void)new T(i); // expected-error {{array 'new' cannot have initialization arguments}}
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}
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template void h<unsigned>(unsigned);
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template void h<unsigned[10]>(unsigned); // expected-note {{in instantiation of function template specialization 'Test1::h<unsigned int [10]>' requested here}}
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}
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// Don't diagnose access for overload candidates that aren't selected.
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namespace PR7436 {
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struct S1 {
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void* operator new(size_t);
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void operator delete(void* p);
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private:
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void* operator new(size_t, void*); // expected-note {{declared private here}}
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void operator delete(void*, void*);
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};
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class S2 {
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void* operator new(size_t); // expected-note {{declared private here}}
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void operator delete(void* p); // expected-note {{declared private here}}
|
||
|
|
};
|
||
|
|
|
||
|
|
void test(S1* s1, S2* s2) {
|
||
|
|
delete s1;
|
||
|
|
delete s2; // expected-error {{is a private member}}
|
||
|
|
(void)new S1();
|
||
|
|
(void)new (0L) S1(); // expected-error {{is a private member}}
|
||
|
|
(void)new S2(); // expected-error {{is a private member}}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace rdar8018245 {
|
||
|
|
struct X0 {
|
||
|
|
static const int value = 17;
|
||
|
|
};
|
||
|
|
|
||
|
|
const int X0::value;
|
||
|
|
|
||
|
|
struct X1 {
|
||
|
|
static int value;
|
||
|
|
};
|
||
|
|
|
||
|
|
int X1::value;
|
||
|
|
|
||
|
|
template<typename T>
|
||
|
|
int *f() {
|
||
|
|
return new (int[T::value]); // expected-warning{{when type is in parentheses, array cannot have dynamic size}}
|
||
|
|
}
|
||
|
|
|
||
|
|
template int *f<X0>();
|
||
|
|
template int *f<X1>(); // expected-note{{in instantiation of}}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
// <rdar://problem/8248780>
|
||
|
|
namespace Instantiate {
|
||
|
|
template<typename T> struct X {
|
||
|
|
operator T*();
|
||
|
|
};
|
||
|
|
|
||
|
|
void f(X<int> &xi) {
|
||
|
|
delete xi;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR7810 {
|
||
|
|
struct X {
|
||
|
|
// cv is ignored in arguments
|
||
|
|
static void operator delete(void *const);
|
||
|
|
};
|
||
|
|
struct Y {
|
||
|
|
// cv is ignored in arguments
|
||
|
|
static void operator delete(void *volatile);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
// Don't crash on template delete operators
|
||
|
|
namespace TemplateDestructors {
|
||
|
|
struct S {
|
||
|
|
virtual ~S() {}
|
||
|
|
|
||
|
|
void* operator new(const size_t size);
|
||
|
|
template<class T> void* operator new(const size_t, const int, T*);
|
||
|
|
void operator delete(void*, const size_t);
|
||
|
|
template<class T> void operator delete(void*, const size_t, const int, T*);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace DeleteParam {
|
||
|
|
struct X {
|
||
|
|
void operator delete(X*); // expected-error{{first parameter of 'operator delete' must have type 'void *'}}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Y {
|
||
|
|
void operator delete(void* const);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
// <rdar://problem/8427878>
|
||
|
|
// Test that the correct 'operator delete' is selected to pair with
|
||
|
|
// the unexpected placement 'operator new'.
|
||
|
|
namespace PairedDelete {
|
||
|
|
template <class T> struct A {
|
||
|
|
A();
|
||
|
|
void *operator new(size_t s, double d = 0);
|
||
|
|
void operator delete(void *p, double d);
|
||
|
|
void operator delete(void *p) {
|
||
|
|
T::dealloc(p);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
A<int> *test() {
|
||
|
|
return new A<int>();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR7702 {
|
||
|
|
void test1() {
|
||
|
|
new DoesNotExist; // expected-error {{unknown type name 'DoesNotExist'}}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace ArrayNewNeedsDtor {
|
||
|
|
struct A { A(); private: ~A(); };
|
||
|
|
#if __cplusplus <= 199711L
|
||
|
|
// expected-note@-2 {{declared private here}}
|
||
|
|
#endif
|
||
|
|
struct B { B(); A a; };
|
||
|
|
#if __cplusplus <= 199711L
|
||
|
|
// expected-error@-2 {{field of type 'ArrayNewNeedsDtor::A' has private destructor}}
|
||
|
|
#else
|
||
|
|
// expected-note@-4 {{destructor of 'B' is implicitly deleted because field 'a' has an inaccessible destructor}}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
B *test9() {
|
||
|
|
return new B[5];
|
||
|
|
#if __cplusplus <= 199711L
|
||
|
|
// expected-note@-2 {{implicit destructor for 'ArrayNewNeedsDtor::B' first required here}}
|
||
|
|
#else
|
||
|
|
// expected-error@-4 {{attempt to use a deleted function}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace DeleteIncompleteClass {
|
||
|
|
struct A; // expected-note {{forward declaration}}
|
||
|
|
extern A x;
|
||
|
|
void f() { delete x; } // expected-error {{deleting incomplete class type}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace DeleteIncompleteClassPointerError {
|
||
|
|
struct A; // expected-note {{forward declaration}}
|
||
|
|
void f(A *x) { 1+delete x; } // expected-warning {{deleting pointer to incomplete type}} \
|
||
|
|
// expected-error {{invalid operands to binary expression}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR10504 {
|
||
|
|
struct A {
|
||
|
|
virtual void foo() = 0;
|
||
|
|
};
|
||
|
|
void f(A *x) { delete x; } // expected-warning {{delete called on 'PR10504::A' that is abstract but has non-virtual destructor}}
|
||
|
|
}
|
||
|
|
|
||
|
|
struct PlacementArg {};
|
||
|
|
inline void *operator new[](size_t, const PlacementArg &) throw () {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
inline void operator delete[](void *, const PlacementArg &) throw () {
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace r150682 {
|
||
|
|
|
||
|
|
template <typename X>
|
||
|
|
struct S {
|
||
|
|
struct Inner {};
|
||
|
|
S() { new Inner[1]; }
|
||
|
|
};
|
||
|
|
|
||
|
|
struct T {
|
||
|
|
};
|
||
|
|
|
||
|
|
template<typename X>
|
||
|
|
void tfn() {
|
||
|
|
new (*(PlacementArg*)0) T[1]; // expected-warning 2 {{binding dereferenced null pointer to reference has undefined behavior}}
|
||
|
|
}
|
||
|
|
|
||
|
|
void fn() {
|
||
|
|
tfn<int>(); // expected-note {{in instantiation of function template specialization 'r150682::tfn<int>' requested here}}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace P12023 {
|
||
|
|
struct CopyCounter
|
||
|
|
{
|
||
|
|
CopyCounter();
|
||
|
|
CopyCounter(const CopyCounter&);
|
||
|
|
};
|
||
|
|
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
CopyCounter* f = new CopyCounter[10](CopyCounter()); // expected-error {{cannot have initialization arguments}}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace PR12061 {
|
||
|
|
template <class C> struct scoped_array {
|
||
|
|
scoped_array(C* p = __null);
|
||
|
|
};
|
||
|
|
template <class Payload> struct Foo {
|
||
|
|
Foo() : a_(new scoped_array<int>[5]) { }
|
||
|
|
scoped_array< scoped_array<int> > a_;
|
||
|
|
};
|
||
|
|
class Bar {};
|
||
|
|
Foo<Bar> x;
|
||
|
|
|
||
|
|
template <class C> struct scoped_array2 {
|
||
|
|
scoped_array2(C* p = __null, C* q = __null);
|
||
|
|
};
|
||
|
|
template <class Payload> struct Foo2 {
|
||
|
|
Foo2() : a_(new scoped_array2<int>[5]) { }
|
||
|
|
scoped_array2< scoped_array2<int> > a_;
|
||
|
|
};
|
||
|
|
class Bar2 {};
|
||
|
|
Foo2<Bar2> x2;
|
||
|
|
|
||
|
|
class MessageLoop {
|
||
|
|
public:
|
||
|
|
explicit MessageLoop(int type = 0);
|
||
|
|
};
|
||
|
|
template <class CookieStoreTestTraits>
|
||
|
|
class CookieStoreTest {
|
||
|
|
protected:
|
||
|
|
CookieStoreTest() {
|
||
|
|
new MessageLoop;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
struct CookieMonsterTestTraits {
|
||
|
|
};
|
||
|
|
class DeferredCookieTaskTest : public CookieStoreTest<CookieMonsterTestTraits>
|
||
|
|
{
|
||
|
|
DeferredCookieTaskTest() {}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
class DeletingPlaceholder {
|
||
|
|
int* f() {
|
||
|
|
delete f; // expected-error {{reference to non-static member function must be called; did you mean to call it with no arguments?}}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
int* g(int, int) {
|
||
|
|
delete g; // expected-error {{reference to non-static member function must be called}}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
namespace PR18544 {
|
||
|
|
inline void *operator new(size_t); // expected-error {{'operator new' cannot be declared inside a namespace}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// PR19968
|
||
|
|
inline void* operator new(); // expected-error {{'operator new' must have at least one parameter}}
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
template <class C>
|
||
|
|
struct A {
|
||
|
|
void f() { this->::new; } // expected-error {{expected unqualified-id}}
|
||
|
|
void g() { this->::delete; } // expected-error {{expected unqualified-id}}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
template<typename ...T> int *dependent_array_size(T ...v) {
|
||
|
|
return new int[]{v...}; // expected-error {{cannot initialize}}
|
||
|
|
}
|
||
|
|
int *p0 = dependent_array_size();
|
||
|
|
int *p3 = dependent_array_size(1, 2, 3);
|
||
|
|
int *fail = dependent_array_size("hello"); // expected-note {{instantiation of}}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// FIXME: Our behavior here is incredibly inconsistent. GCC allows
|
||
|
|
// constant-folding in array bounds in new-expressions.
|
||
|
|
int (*const_fold)[12] = new int[3][&const_fold + 12 - &const_fold];
|
||
|
|
#if __cplusplus >= 201402L
|
||
|
|
// expected-error@-2 {{array size is not a constant expression}}
|
||
|
|
// expected-note@-3 {{cannot refer to element 12 of non-array}}
|
||
|
|
#elif __cplusplus < 201103L
|
||
|
|
// expected-error@-5 {{cannot allocate object of variably modified type}}
|
||
|
|
#endif
|