691 lines
18 KiB
C++
691 lines
18 KiB
C++
// RUN: %clang_cc1 -triple %itanium_abi_triple -pedantic -verify %s
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// RUN: %clang_cc1 -triple %itanium_abi_triple -pedantic -verify -std=c++98 %s
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// RUN: %clang_cc1 -triple %itanium_abi_triple -pedantic -verify -std=c++11 %s
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int* f(int) { return 0; }
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float* f(float) { return 0; }
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void f();
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void test_f(int iv, float fv) {
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float* fp = f(fv);
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int* ip = f(iv);
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}
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int* g(int, float, int); // expected-note {{candidate function}}
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float* g(int, int, int);
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double* g(int, float, float); // expected-note {{candidate function}}
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char* g(int, float, ...);
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void g();
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void test_g(int iv, float fv) {
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int* ip1 = g(iv, fv, 0);
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float* fp1 = g(iv, iv, 0);
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double* dp1 = g(iv, fv, fv);
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char* cp1 = g(0, 0);
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char* cp2 = g(0, 0, 0, iv, fv);
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double* dp2 = g(0, fv, 1.5); // expected-error {{call to 'g' is ambiguous}}
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}
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double* h(double f);
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int* h(int);
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void test_h(float fv, unsigned char cv) {
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double* dp = h(fv);
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int* ip = h(cv);
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}
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int* i(int);
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double* i(long);
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void test_i(short sv, int iv, long lv, unsigned char ucv) {
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int* ip1 = i(sv);
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int* ip2 = i(iv);
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int* ip3 = i(ucv);
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double* dp1 = i(lv);
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}
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int* j(void*);
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double* j(bool);
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void test_j(int* ip) {
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int* ip1 = j(ip);
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}
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int* k(char*);
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double* k(bool);
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void test_k() {
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int* ip1 = k("foo");
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#if __cplusplus <= 199711L
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// expected-warning@-2 {{conversion from string literal to 'char *' is deprecated}}
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#else
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// expected-error@-4 {{cannot initialize a variable of type 'int *' with an rvalue of type 'double *'}}
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#endif
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int* ip2 = k(("foo"));
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#if __cplusplus <= 199711L
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// expected-warning@-2 {{conversion from string literal to 'char *' is deprecated}}
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#else
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// expected-error@-4 {{cannot initialize a variable of type 'int *' with an rvalue of type 'double *'}}
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#endif
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double* dp1 = k(L"foo");
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}
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int* l(wchar_t*);
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double* l(bool);
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void test_l() {
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int* ip1 = l(L"foo");
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#if __cplusplus <= 199711L
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// expected-warning@-2 {{conversion from string literal to 'wchar_t *' is deprecated}}
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#else
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// expected-error@-4 {{cannot initialize a variable of type 'int *' with an rvalue of type 'double *'}}
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#endif
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double* dp1 = l("foo");
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}
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int* m(const char*);
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double* m(char*);
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void test_m() {
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int* ip = m("foo");
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}
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int* n(char*);
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double* n(void*);
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class E;
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void test_n(E* e) {
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char ca[7];
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int* ip1 = n(ca);
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int* ip2 = n("foo");
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#if __cplusplus <= 199711L
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// expected-warning@-2 {{conversion from string literal to 'char *' is deprecated}}
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#else
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// expected-warning@-4 {{ISO C++11 does not allow conversion from string literal to 'char *'}}
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#endif
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float fa[7];
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double* dp1 = n(fa);
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double* dp2 = n(e);
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}
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enum PromotesToInt {
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PromotesToIntValue = -1
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};
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enum PromotesToUnsignedInt {
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PromotesToUnsignedIntValue = __INT_MAX__ * 2U
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};
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int* o(int);
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double* o(unsigned int);
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float* o(long);
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void test_o() {
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int* ip1 = o(PromotesToIntValue);
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double* dp1 = o(PromotesToUnsignedIntValue);
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}
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int* p(int);
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double* p(double);
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void test_p() {
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int* ip = p((short)1);
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double* dp = p(1.0f);
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}
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struct Bits {
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signed short int_bitfield : 5;
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unsigned int uint_bitfield : 8;
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};
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int* bitfields(int, int);
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float* bitfields(unsigned int, int);
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void test_bitfield(Bits bits, int x) {
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int* ip = bitfields(bits.int_bitfield, 0);
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float* fp = bitfields(bits.uint_bitfield, 0u);
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}
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int* multiparm(long, int, long); // expected-note {{candidate function}}
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float* multiparm(int, int, int); // expected-note {{candidate function}}
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double* multiparm(int, int, short); // expected-note {{candidate function}}
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void test_multiparm(long lv, short sv, int iv) {
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int* ip1 = multiparm(lv, iv, lv);
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int* ip2 = multiparm(lv, sv, lv);
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float* fp1 = multiparm(iv, iv, iv);
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float* fp2 = multiparm(sv, iv, iv);
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double* dp1 = multiparm(sv, sv, sv);
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double* dp2 = multiparm(iv, sv, sv);
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multiparm(sv, sv, lv); // expected-error {{call to 'multiparm' is ambiguous}}
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}
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// Test overloading based on qualification vs. no qualification
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// conversion.
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int* quals1(int const * p);
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char* quals1(int * p);
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int* quals2(int const * const * pp);
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char* quals2(int * * pp);
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int* quals3(int const * * const * ppp);
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char* quals3(int *** ppp);
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void test_quals(int * p, int * * pp, int * * * ppp) {
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char* q1 = quals1(p);
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char* q2 = quals2(pp);
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char* q3 = quals3(ppp);
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}
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// Test overloading based on qualification ranking (C++ 13.3.2)p3.
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int* quals_rank1(int const * p);
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float* quals_rank1(int const volatile *p);
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char* quals_rank1(char*);
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double* quals_rank1(const char*);
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int* quals_rank2(int const * const * pp);
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float* quals_rank2(int * const * pp);
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void quals_rank3(int const * const * const volatile * p); // expected-note{{candidate function}}
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void quals_rank3(int const * const volatile * const * p); // expected-note{{candidate function}}
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void quals_rank3(int const *); // expected-note{{candidate function}}
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void quals_rank3(int volatile *); // expected-note{{candidate function}}
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void test_quals_ranking(int * p, int volatile *pq, int * * pp, int * * * ppp) {
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int* q1 = quals_rank1(p);
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float* q2 = quals_rank1(pq);
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double* q3 = quals_rank1("string literal");
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char a[17];
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const char* ap = a;
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char* q4 = quals_rank1(a);
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double* q5 = quals_rank1(ap);
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float* q6 = quals_rank2(pp);
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quals_rank3(ppp); // expected-error {{call to 'quals_rank3' is ambiguous}}
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quals_rank3(p); // expected-error {{call to 'quals_rank3' is ambiguous}}
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quals_rank3(pq);
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}
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// Test overloading based on derived-to-base conversions
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class A { };
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class B : public A { };
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class C : public B { };
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class D : public C { };
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int* derived1(A*);
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char* derived1(const A*);
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float* derived1(void*);
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int* derived2(A*);
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float* derived2(B*);
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int* derived3(A*);
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float* derived3(const B*);
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char* derived3(C*);
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void test_derived(B* b, B const* bc, C* c, const C* cc, void* v, D* d) {
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int* d1 = derived1(b);
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char* d2 = derived1(bc);
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int* d3 = derived1(c);
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char* d4 = derived1(cc);
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float* d5 = derived1(v);
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float* d6 = derived2(b);
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float* d7 = derived2(c);
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char* d8 = derived3(d);
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}
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void derived4(C*); // expected-note{{candidate function not viable: cannot convert from base class pointer 'A *' to derived class pointer 'C *' for 1st argument}}
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void test_base(A* a) {
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derived4(a); // expected-error{{no matching function for call to 'derived4}}
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}
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// Test overloading of references.
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// (FIXME: tests binding to determine candidate sets, not overload
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// resolution per se).
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int* intref(int&);
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float* intref(const int&);
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void intref_test() {
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float* ir1 = intref(5);
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float* ir2 = intref(5.5); // expected-warning{{implicit conversion from 'double' to 'int' changes value from 5.5 to 5}}
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}
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void derived5(C&); // expected-note{{candidate function not viable: cannot bind base class object of type 'A' to derived class reference 'C &' for 1st argument}}
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void test_base(A& a) {
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derived5(a); // expected-error{{no matching function for call to 'derived5}}
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}
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// Test reference binding vs. standard conversions.
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int& bind_vs_conv(const double&);
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float& bind_vs_conv(int);
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void bind_vs_conv_test()
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{
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int& i1 = bind_vs_conv(1.0f);
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float& f1 = bind_vs_conv((short)1);
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}
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// Test that cv-qualifiers get subsumed in the reference binding.
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struct X { };
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struct Y { };
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struct Z : X, Y { };
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int& cvqual_subsume(X&); // expected-note{{candidate function}}
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float& cvqual_subsume(const Y&); // expected-note{{candidate function}}
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int& cvqual_subsume2(X&); // expected-note{{candidate function}}
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float& cvqual_subsume2(volatile Y&); // expected-note{{candidate function}}
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void cvqual_subsume_test(Z z) {
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cvqual_subsume(z); // expected-error{{call to 'cvqual_subsume' is ambiguous}}
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cvqual_subsume2(z); // expected-error{{call to 'cvqual_subsume2' is ambiguous}}
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}
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// Test overloading with cv-qualification differences in reference
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// binding.
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int& cvqual_diff(X&);
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float& cvqual_diff(const X&);
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void cvqual_diff_test(X x, Z z) {
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int& i1 = cvqual_diff(x);
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int& i2 = cvqual_diff(z);
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}
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// Test overloading with derived-to-base differences in reference
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// binding.
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struct Z2 : Z { };
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int& db_rebind(X&);
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long& db_rebind(Y&);
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float& db_rebind(Z&);
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void db_rebind_test(Z2 z2) {
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float& f1 = db_rebind(z2);
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}
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class string { };
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class opt : public string { };
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struct SR {
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SR(const string&);
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};
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void f(SR) { }
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void g(opt o) {
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f(o);
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}
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namespace PR5756 {
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int &a(void*, int);
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float &a(void*, float);
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void b() {
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int &ir = a(0,0);
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(void)ir;
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}
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}
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// Tests the exact text used to note the candidates
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namespace test1 {
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template <class T>
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void foo(T t, unsigned N); // expected-note {{candidate function template not viable: no known conversion from 'const char [6]' to 'unsigned int' for 2nd argument}}
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void foo(int n, char N); // expected-note {{candidate function not viable: no known conversion from 'const char [6]' to 'char' for 2nd argument}}
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void foo(int n, const char *s, int t); // expected-note {{candidate function not viable: requires 3 arguments, but 2 were provided}}
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void foo(int n, const char *s, int t, ...); // expected-note {{candidate function not viable: requires at least 3 arguments, but 2 were provided}}
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void foo(int n, const char *s, int t, int u = 0); // expected-note {{candidate function not viable: requires at least 3 arguments, but 2 were provided}}
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// PR 11857
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void foo(int n); // expected-note {{candidate function not viable: requires single argument 'n', but 2 arguments were provided}}
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void foo(unsigned n = 10); // expected-note {{candidate function not viable: allows at most single argument 'n', but 2 arguments were provided}}
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void bar(int n, int u = 0); // expected-note {{candidate function not viable: requires at least argument 'n', but no arguments were provided}}
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void baz(int n = 0, int u = 0); // expected-note {{candidate function not viable: requires at most 2 arguments, but 3 were provided}}
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void test() {
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foo(4, "hello"); //expected-error {{no matching function for call to 'foo'}}
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bar(); //expected-error {{no matching function for call to 'bar'}}
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baz(3, 4, 5); // expected-error {{no matching function for call to 'baz'}}
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}
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}
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// PR 6014
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namespace test2 {
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struct QFixed {
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QFixed(int i);
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QFixed(long i);
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};
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bool operator==(const QFixed &f, int i);
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class qrgb666 {
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inline operator unsigned int () const;
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inline bool operator==(const qrgb666 &v) const;
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inline bool operator!=(const qrgb666 &v) const { return !(*this == v); }
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};
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}
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// PR 6117
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namespace IncompleteConversion {
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struct Complete {};
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struct Incomplete;
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void completeFunction(Complete *); // expected-note 2 {{cannot convert argument of incomplete type}}
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void completeFunction(Complete &); // expected-note 2 {{cannot convert argument of incomplete type}}
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void testTypeConversion(Incomplete *P) {
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completeFunction(P); // expected-error {{no matching function for call to 'completeFunction'}}
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completeFunction(*P); // expected-error {{no matching function for call to 'completeFunction'}}
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}
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void incompletePointerFunction(Incomplete *); // expected-note {{candidate function not viable: cannot convert argument of incomplete type 'IncompleteConversion::Incomplete' to 'IncompleteConversion::Incomplete *' for 1st argument; take the address of the argument with &}}
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void incompleteReferenceFunction(Incomplete &); // expected-note {{candidate function not viable: cannot convert argument of incomplete type 'IncompleteConversion::Incomplete *' to 'IncompleteConversion::Incomplete &' for 1st argument; dereference the argument with *}}
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void testPointerReferenceConversion(Incomplete &reference, Incomplete *pointer) {
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incompletePointerFunction(reference); // expected-error {{no matching function for call to 'incompletePointerFunction'}}
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incompleteReferenceFunction(pointer); // expected-error {{no matching function for call to 'incompleteReferenceFunction'}}
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}
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}
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namespace DerivedToBaseVsVoid {
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struct A { };
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struct B : A { };
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float &f(void *);
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int &f(const A*);
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void g(B *b) {
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int &ir = f(b);
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}
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}
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// PR 6398 + PR 6421
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namespace test4 {
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class A;
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class B {
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static void foo(); // expected-note {{not viable}}
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static void foo(int*); // expected-note {{not viable}}
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static void foo(long*); // expected-note {{not viable}}
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void bar(A *a) {
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foo(a); // expected-error {{no matching function for call}}
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}
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};
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}
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namespace DerivedToBase {
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struct A { };
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struct B : A { };
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struct C : B { };
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int &f0(const A&);
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float &f0(B);
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void g() {
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float &fr = f0(C());
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}
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}
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namespace PR6483 {
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struct X0 {
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operator const unsigned int & () const;
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};
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struct X1 {
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operator unsigned int & () const;
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};
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void f0(const bool &);
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void f1(bool &); // expected-note 2{{not viable}}
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void g(X0 x0, X1 x1) {
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f0(x0);
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f1(x0); // expected-error{{no matching function for call}}
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f0(x1);
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f1(x1); // expected-error{{no matching function for call}}
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}
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}
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namespace PR6078 {
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struct A {
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A(short); // expected-note{{candidate constructor}}
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A(long); // expected-note{{candidate constructor}}
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};
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struct S {
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typedef void ft(A);
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operator ft*();
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};
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void f() {
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S()(0); // expected-error{{conversion from 'int' to 'PR6078::A' is ambiguous}}
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}
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}
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namespace PR6177 {
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struct String { String(char const*); };
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void f(bool const volatile&);
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int &f(String);
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void g() { int &r = f(""); }
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}
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namespace PR7095 {
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struct X { };
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struct Y {
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operator const X*();
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private:
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operator X*();
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};
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void f(const X *);
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void g(Y y) { f(y); }
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}
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namespace PR7224 {
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class A {};
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class B : public A {};
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int &foo(A *const d);
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float &foo(const A *const d);
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void bar()
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{
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B *const d = 0;
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B const *const d2 = 0;
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int &ir = foo(d);
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float &fr = foo(d2);
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}
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}
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namespace NontrivialSubsequence {
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struct X0;
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class A {
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operator X0 *();
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public:
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operator const X0 *();
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};
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A a;
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void foo( void const * );
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void g() {
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foo(a);
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}
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}
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// rdar://rdar8499524
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namespace rdar8499524 {
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struct W {};
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struct S {
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S(...);
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};
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void g(const S&);
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void f() {
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g(W());
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}
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}
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namespace rdar9173984 {
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template <typename T, unsigned long N> int &f(const T (&)[N]);
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template <typename T> float &f(const T *);
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|
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void test() {
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int arr[2] = {0, 0};
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int *arrp = arr;
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int &ir = f(arr);
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float &fr = f(arrp);
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|
}
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|
}
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namespace PR9507 {
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|
void f(int * const&); // expected-note{{candidate function}}
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void f(int const(&)[1]); // expected-note{{candidate function}}
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|
|
|
int main() {
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|
int n[1];
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f(n); // expected-error{{call to 'f' is ambiguous}}
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|
}
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|
}
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|
|
|
namespace rdar9803316 {
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|
void foo(float);
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|
int &foo(int);
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|
|
|
void bar() {
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|
int &ir = (&foo)(0);
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|
}
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|
}
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|
|
|
namespace IncompleteArg {
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|
// Ensure that overload resolution attempts to complete argument types when
|
|
// performing ADL.
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|
template<typename T> struct S {
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|
friend int f(const S&);
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|
};
|
|
extern S<int> s;
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|
int k = f(s);
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|
|
|
template<typename T> struct Op {
|
|
friend bool operator==(const Op &, const Op &);
|
|
};
|
|
extern Op<char> op;
|
|
bool b = op == op;
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|
|
|
// ... and not in other cases! Nothing here requires U<int()> to be complete.
|
|
// (Note that instantiating U<int()> will fail.)
|
|
template<typename T> struct U {
|
|
T t;
|
|
};
|
|
struct Consumer {
|
|
template<typename T>
|
|
int operator()(const U<T> &);
|
|
};
|
|
template<typename T> U<T> &make();
|
|
Consumer c;
|
|
int n = sizeof(c(make<int()>()));
|
|
}
|
|
|
|
namespace PR12142 {
|
|
void fun(int (*x)[10]); // expected-note{{candidate function not viable: 1st argument ('const int (*)[10]') would lose const qualifier}}
|
|
void g() { fun((const int(*)[10])0); } // expected-error{{no matching function for call to 'fun'}}
|
|
}
|
|
|
|
// DR1152: Take 'volatile' into account when handling reference bindings in
|
|
// overload resolution.
|
|
namespace PR12931 {
|
|
void f(const int &, ...);
|
|
void f(const volatile int &, int);
|
|
void g() { f(0, 0); }
|
|
}
|
|
|
|
void test5() {
|
|
struct {
|
|
typedef void F1(int);
|
|
typedef void F2(double);
|
|
operator F1*(); // expected-note{{conversion candidate}}
|
|
operator F2*(); // expected-note{{conversion candidate}}
|
|
} callable;
|
|
callable(); // expected-error{{no matching function for call}}
|
|
}
|
|
|
|
namespace PR20218 {
|
|
void f(void (*const &)()); // expected-note 2{{candidate}}
|
|
void f(void (&&)()) = delete; // expected-note 2{{candidate}}
|
|
#if __cplusplus <= 199711L
|
|
// expected-warning@-2 {{rvalue references are a C++11 extension}}
|
|
// expected-warning@-3 {{deleted function definitions are a C++11 extension}}
|
|
#endif
|
|
void g(void (&&)()) = delete; // expected-note 2{{candidate}}
|
|
#if __cplusplus <= 199711L
|
|
// expected-warning@-2 {{rvalue references are a C++11 extension}}
|
|
// expected-warning@-3 {{deleted function definitions are a C++11 extension}}
|
|
#endif
|
|
void g(void (*const &)()); // expected-note 2{{candidate}}
|
|
|
|
void x();
|
|
typedef void (&fr)();
|
|
struct Y { operator fr(); } y;
|
|
|
|
void h() {
|
|
f(x); // expected-error {{ambiguous}}
|
|
g(x); // expected-error {{ambiguous}}
|
|
f(y); // expected-error {{ambiguous}}
|
|
g(y); // expected-error {{ambiguous}}
|
|
}
|
|
}
|
|
|
|
namespace StringLiteralToCharAmbiguity {
|
|
void f(char *, int);
|
|
void f(const char *, unsigned);
|
|
void g() { f("foo", 0); }
|
|
#if __cplusplus <= 199711L
|
|
// expected-error@-2 {{call to 'f' is ambiguous}}
|
|
// expected-note@-5 {{candidate function}}
|
|
// expected-note@-5 {{candidate function}}
|
|
#endif
|
|
}
|
|
|
|
namespace ProduceNotesAfterSFINAEFailure {
|
|
struct A {
|
|
template<typename T, typename U = typename T::x> A(T); // expected-warning 0-1{{extension}}
|
|
};
|
|
void f(void*, A); // expected-note {{candidate function not viable}}
|
|
void g() { f(1, 2); } // expected-error {{no matching function}}
|
|
}
|
|
|
|
namespace PR19808 {
|
|
struct B {
|
|
int i;
|
|
void bar();
|
|
};
|
|
struct D : public B{};
|
|
|
|
void f(bool);
|
|
void f(int D::*);
|
|
void f(void (D::*)());
|
|
|
|
void Usage() {
|
|
int B::*pmem;
|
|
void (B::*pmf)();
|
|
|
|
// These should not be ambiguous.
|
|
f(pmem);
|
|
f(pmf);
|
|
}
|
|
}
|