xref: /llvm-project/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq.verify.cpp (revision 9bb9ec380ace81d040d3a0a0a2ae9a75733ab330)
1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <utility>
10 
11 // template<class T, T N>
12 //   using make_integer_sequence = integer_sequence<T, 0, 1, ..., N-1>;
13 
14 // UNSUPPORTED: c++03, c++11
15 
16 // This test hangs during recursive template instantiation with libstdc++
17 // UNSUPPORTED: stdlib=libstdc++
18 
19 #include <utility>
20 
21 #include "test_macros.h"
22 
23 typedef std::make_integer_sequence<int, -3> MakeSeqT;
24 
25 // std::make_integer_sequence is implemented using a compiler builtin if available.
26 // this builtin has different diagnostic messages than the fallback implementation.
27 #if TEST_HAS_BUILTIN(__make_integer_seq)
28 MakeSeqT i; // expected-error@*:* {{integer sequences must have non-negative sequence length}}
29 #else
30 MakeSeqT i; // expected-error-re@*:* {{static assertion failed{{.*}}std::make_integer_sequence must have a non-negative sequence length}}
31 #endif
32