xref: /llvm-project/clang/test/CXX/temp/temp.res/temp.dep/temp.dep.constexpr/p2.cpp (revision 00068c452a599c328986e8afcbb3311331d09d26)
1 // RUN: %clang_cc1 -std=c++98 -verify=cxx98 %s
2 // RUN: %clang_cc1 -std=c++11 -verify=cxx11 %s
3 // cxx11-no-diagnostics
4 
5 template<int n> struct S;
6 
7 template<int n> struct T {
TT8   T() {
9     // An identifier is value-dependent if it is:
10     //  - a name declared with a dependent type
11     S<n> s;
12     S<s> check1; // ok, s is value-dependent
13     //  - the name of a non-type template parameter
14     typename S<n>::T check2; // ok, n is value-dependent
15     //  - a constant with literal type and is initialized with an expression
16     //  that is value-dependent.
17     const int k = n;
18     typename S<k>::T check3; // ok, k is value-dependent
19 
20     const int &i = k; // cxx98-note {{declared here}}
21     typename S<i>::T check4; // cxx98-error {{not an integral constant expression}} cxx98-note {{read of variable 'i' of non-integral, non-enumeration type 'const int &'}}
22   }
23 };
24