diff options
Diffstat (limited to 'libstdc++-v3/testsuite/std/ranges/istream_view.cc')
| -rw-r--r-- | libstdc++-v3/testsuite/std/ranges/istream_view.cc | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/std/ranges/istream_view.cc b/libstdc++-v3/testsuite/std/ranges/istream_view.cc index 37fde30a4a4..95de016ed67 100644 --- a/libstdc++-v3/testsuite/std/ranges/istream_view.cc +++ b/libstdc++-v3/testsuite/std/ranges/istream_view.cc @@ -115,6 +115,17 @@ test07() VERIFY( sum == 10 ); } +template<class T, class U> +concept can_istream_view = requires (U u) { views::istream<T>(u); }; + +void +test08() +{ + // Verify SFINAE behavior. + struct S { }; + static_assert(!can_istream_view<S, std::istringstream>); +} + int main() { @@ -125,4 +136,5 @@ main() test05(); test06(); test07(); + test08(); } |