| // RUN: clang -fsyntax-only -pedantic -verify %s |
| int* f(int) { return 0; } |
| float* f(float) { return 0; } |
| void f(); |
| |
| void test_f(int iv, float fv) { |
| float* fp = f(fv); |
| int* ip = f(iv); |
| } |
| |
| int* g(int, float, int); // expected-note {{ candidate function }} |
| float* g(int, int, int); // expected-note {{ candidate function }} |
| double* g(int, float, float); // expected-note {{ candidate function }} |
| char* g(int, float, ...); // expected-note {{ candidate function }} |
| void g(); |
| |
| void test_g(int iv, float fv) { |
| int* ip1 = g(iv, fv, 0); |
| float* fp1 = g(iv, iv, 0); |
| double* dp1 = g(iv, fv, fv); |
| char* cp1 = g(0, 0); |
| char* cp2 = g(0, 0, 0, iv, fv); |
| |
| double* dp2 = g(0, fv, 1.5); // expected-error {{ call to 'g' is ambiguous; candidates are: }} |
| } |
| |
| double* h(double f); |
| int* h(int); |
| |
| void test_h(float fv, unsigned char cv) { |
| double* dp = h(fv); |
| int* ip = h(cv); |
| } |
| |
| int* i(int); |
| double* i(long); |
| |
| void test_i(short sv, int iv, long lv, unsigned char ucv) { |
| int* ip1 = i(sv); |
| int* ip2 = i(iv); |
| int* ip3 = i(ucv); |
| double* dp1 = i(lv); |
| } |
| |
| int* j(void*); |
| double* j(bool); |
| |
| void test_j(int* ip) { |
| int* ip1 = j(ip); |
| } |
| |
| int* k(char*); |
| double* k(bool); |
| |
| void test_k() { |
| int* ip1 = k("foo"); |
| double* dp1 = k(L"foo"); |
| } |
| |
| int* l(wchar_t*); |
| double* l(bool); |
| |
| void test_l() { |
| int* ip1 = l(L"foo"); |
| double* dp1 = l("foo"); |
| } |
| |
| int* m(const char*); |
| double* m(char*); |
| |
| void test_m() { |
| int* ip = m("foo"); |
| } |
| |
| int* n(char*); |
| double* n(void*); |
| class E; |
| |
| void test_n(E* e) { |
| char ca[7]; |
| int* ip1 = n(ca); |
| int* ip2 = n("foo"); |
| |
| float fa[7]; |
| double* dp1 = n(fa); |
| |
| double* dp2 = n(e); |
| } |
| |
| enum PromotesToInt { |
| PromotesToIntValue = -1 |
| }; |
| |
| enum PromotesToUnsignedInt { |
| PromotesToUnsignedIntValue = 1u |
| }; |
| |
| int* o(int); |
| double* o(unsigned int); |
| float* o(long); |
| |
| void test_o() { |
| int* ip1 = o(PromotesToIntValue); |
| double* dp1 = o(PromotesToUnsignedIntValue); |
| } |
| |
| int* p(int); |
| double* p(double); |
| |
| void test_p() { |
| int* ip = p((short)1); |
| double* dp = p(1.0f); |
| } |
| |
| struct Bits { |
| signed short int_bitfield : 5; |
| unsigned int uint_bitfield : 8; |
| }; |
| |
| int* bitfields(int, int); |
| float* bitfields(unsigned int, int); |
| |
| void test_bitfield(Bits bits, int x) { |
| int* ip = bitfields(bits.int_bitfield, 0); |
| float* fp = bitfields(bits.uint_bitfield, 0u); |
| } |
| |
| int* multiparm(long, int, long); // expected-note {{ candidate function }} |
| float* multiparm(int, int, int); // expected-note {{ candidate function }} |
| double* multiparm(int, int, short); // expected-note {{ candidate function }} |
| |
| void test_multiparm(long lv, short sv, int iv) { |
| int* ip1 = multiparm(lv, iv, lv); |
| int* ip2 = multiparm(lv, sv, lv); |
| float* fp1 = multiparm(iv, iv, iv); |
| float* fp2 = multiparm(sv, iv, iv); |
| double* dp1 = multiparm(sv, sv, sv); |
| double* dp2 = multiparm(iv, sv, sv); |
| multiparm(sv, sv, lv); // expected-error {{ call to 'multiparm' is ambiguous; candidates are: }} |
| } |
| |
| // Test overloading based on qualification vs. no qualification |
| // conversion. |
| int* quals1(int const * p); |
| char* quals1(int * p); |
| |
| int* quals2(int const * const * pp); |
| char* quals2(int * * pp); |
| |
| int* quals3(int const * * const * ppp); |
| char* quals3(int *** ppp); |
| |
| void test_quals(int * p, int * * pp, int * * * ppp) { |
| char* q1 = quals1(p); |
| char* q2 = quals2(pp); |
| char* q3 = quals3(ppp); |
| } |
| |
| // Test overloading based on qualification ranking (C++ 13.3.2)p3. |
| int* quals_rank1(int const * p); |
| float* quals_rank1(int const volatile *p); |
| char* quals_rank1(char*); |
| double* quals_rank1(const char*); |
| |
| int* quals_rank2(int const * const * pp); |
| float* quals_rank2(int * const * pp); |
| |
| void quals_rank3(int const * const * const volatile * p); // expected-note{{candidate function}} |
| void quals_rank3(int const * const volatile * const * p); // expected-note{{candidate function}} |
| |
| void quals_rank3(int const *); // expected-note{{candidate function}} |
| void quals_rank3(int volatile *); // expected-note{{candidate function}} |
| |
| void test_quals_ranking(int * p, int volatile *pq, int * * pp, int * * * ppp) { |
| int* q1 = quals_rank1(p); |
| float* q2 = quals_rank1(pq); |
| double* q3 = quals_rank1("string literal"); |
| char a[17]; |
| const char* ap = a; |
| char* q4 = quals_rank1(a); |
| double* q5 = quals_rank1(ap); |
| |
| float* q6 = quals_rank2(pp); |
| |
| quals_rank3(ppp); // expected-error {{call to 'quals_rank3' is ambiguous; candidates are:}} |
| |
| quals_rank3(p); // expected-error {{call to 'quals_rank3' is ambiguous; candidates are:}} |
| quals_rank3(pq); |
| } |
| |
| // Test overloading based on derived-to-base conversions |
| class A { }; |
| class B : public A { }; |
| class C : public B { }; |
| class D : public C { }; |
| |
| int* derived1(A*); |
| char* derived1(const A*); |
| float* derived1(void*); |
| |
| int* derived2(A*); |
| float* derived2(B*); |
| |
| int* derived3(A*); |
| float* derived3(const B*); |
| char* derived3(C*); |
| |
| void test_derived(B* b, B const* bc, C* c, const C* cc, void* v, D* d) { |
| int* d1 = derived1(b); |
| char* d2 = derived1(bc); |
| int* d3 = derived1(c); |
| char* d4 = derived1(cc); |
| float* d5 = derived1(v); |
| |
| float* d6 = derived2(b); |
| float* d7 = derived2(c); |
| |
| char* d8 = derived3(d); |
| } |
| |
| // Test overloading of references. |
| // (FIXME: tests binding to determine candidate sets, not overload |
| // resolution per se). |
| int* intref(int&); |
| float* intref(const int&); |
| |
| void intref_test() { |
| float* ir1 = intref(5); |
| float* ir2 = intref(5.5); |
| } |
| |
| // Test reference binding vs. standard conversions. |
| int& bind_vs_conv(const double&); |
| float& bind_vs_conv(int); |
| |
| void bind_vs_conv_test() |
| { |
| int& i1 = bind_vs_conv(1.0f); |
| float& f1 = bind_vs_conv((short)1); |
| } |
| |
| // Test that cv-qualifiers get subsumed in the reference binding. |
| struct X { }; |
| struct Y { }; |
| struct Z : X, Y { }; |
| |
| int& cvqual_subsume(X&); // expected-note{{candidate function}} |
| float& cvqual_subsume(const Y&); // expected-note{{candidate function}} |
| |
| int& cvqual_subsume2(const X&); |
| float& cvqual_subsume2(const volatile Y&); |
| |
| Z get_Z(); |
| |
| void cvqual_subsume_test(Z z) { |
| cvqual_subsume(z); // expected-error{{call to 'cvqual_subsume' is ambiguous; candidates are:}} |
| int& x = cvqual_subsume2(get_Z()); // okay: only binds to the first one |
| } |
| |
| // Test overloading with cv-qualification differences in reference |
| // binding. |
| int& cvqual_diff(X&); |
| float& cvqual_diff(const X&); |
| |
| void cvqual_diff_test(X x, Z z) { |
| int& i1 = cvqual_diff(x); |
| int& i2 = cvqual_diff(z); |
| } |
| |
| // Test overloading with derived-to-base differences in reference |
| // binding. |
| struct Z2 : Z { }; |
| |
| int& db_rebind(X&); |
| long& db_rebind(Y&); |
| float& db_rebind(Z&); |
| |
| void db_rebind_test(Z2 z2) { |
| float& f1 = db_rebind(z2); |
| } |