xref: /aosp_15_r20/external/clang/test/SemaCXX/new-array-size-conv.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -pedantic -verify %s
2*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -pedantic -verify -std=c++98 %s
3*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -pedantic -verify -std=c++11 %s
4*67e74705SXin Li 
5*67e74705SXin Li struct ValueInt
6*67e74705SXin Li {
ValueIntValueInt7*67e74705SXin Li   ValueInt(int v = 0) : ValueLength(v) {}
operator intValueInt8*67e74705SXin Li   operator int () const { return ValueLength; } // expected-note 3{{conversion to integral type 'int' declared here}}
9*67e74705SXin Li private:
10*67e74705SXin Li   int ValueLength;
11*67e74705SXin Li };
12*67e74705SXin Li 
13*67e74705SXin Li enum E { e };
14*67e74705SXin Li struct ValueEnum {
15*67e74705SXin Li   operator E() const; // expected-note{{conversion to enumeration type 'E' declared here}}
16*67e74705SXin Li };
17*67e74705SXin Li 
18*67e74705SXin Li struct ValueBoth : ValueInt, ValueEnum { };
19*67e74705SXin Li 
20*67e74705SXin Li struct IndirectValueInt : ValueInt { };
21*67e74705SXin Li struct TwoValueInts : ValueInt, IndirectValueInt { }; // expected-warning{{direct base 'ValueInt' is inaccessible due to ambiguity:\n    struct TwoValueInts -> struct ValueInt\n    struct TwoValueInts -> struct IndirectValueInt -> struct ValueInt}}
22*67e74705SXin Li 
23*67e74705SXin Li 
test()24*67e74705SXin Li void test() {
25*67e74705SXin Li   (void)new int[ValueInt(10)];
26*67e74705SXin Li #if __cplusplus <= 199711L // C++03 or earlier modes
27*67e74705SXin Li   // expected-warning@-2{{implicit conversion from array size expression of type 'ValueInt' to integral type 'int' is a C++11 extension}}
28*67e74705SXin Li #endif
29*67e74705SXin Li 
30*67e74705SXin Li   (void)new int[ValueEnum()];
31*67e74705SXin Li #if __cplusplus <= 199711L
32*67e74705SXin Li // expected-warning@-2{{implicit conversion from array size expression of type 'ValueEnum' to enumeration type 'E' is a C++11 extension}}
33*67e74705SXin Li #endif
34*67e74705SXin Li   (void)new int[ValueBoth()]; // expected-error{{ambiguous conversion of array size expression of type 'ValueBoth' to an integral or enumeration type}}
35*67e74705SXin Li 
36*67e74705SXin Li   (void)new int[TwoValueInts()]; // expected-error{{ambiguous conversion of array size expression of type 'TwoValueInts' to an integral or enumeration type}}
37*67e74705SXin Li }
38