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| author | Jonathan Wakely <jwakely@redhat.com> | 2021-08-23 16:16:05 +0100 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2021-08-23 16:17:10 +0100 |
| commit | 1a129376bbc26d3c30af3c1ae6036e2e1446db40 (patch) | |
| tree | 1b2bcbbdfff913db590a4cb6c31c8338705845a6 | |
| parent | fedadb60b6fc6425387faf4d514b4e8b0e24180e (diff) | |
| download | gcc-1a129376bbc26d3c30af3c1ae6036e2e1446db40.zip gcc-1a129376bbc26d3c30af3c1ae6036e2e1446db40.tar.gz gcc-1a129376bbc26d3c30af3c1ae6036e2e1446db40.tar.bz2 | |
libstdc++: Add default template argument to basic_istream_view
The standard shows this default template argument in the <ranges>
synopsis, but it was missing in libstdc++.
libstdc++-v3/ChangeLog:
* include/std/ranges (basic_istream_view): Add default template
argument.
* testsuite/std/ranges/istream_view.cc: Check it.
| -rw-r--r-- | libstdc++-v3/include/std/ranges | 3 | ||||
| -rw-r--r-- | libstdc++-v3/testsuite/std/ranges/istream_view.cc | 10 |
2 files changed, 12 insertions, 1 deletions
diff --git a/libstdc++-v3/include/std/ranges b/libstdc++-v3/include/std/ranges index 3d49a26..b373e4f 100644 --- a/libstdc++-v3/include/std/ranges +++ b/libstdc++-v3/include/std/ranges @@ -679,7 +679,8 @@ namespace views = requires(basic_istream<_CharT, _Traits>& is, _Val& t) { is >> t; }; } // namespace __detail - template<movable _Val, typename _CharT, typename _Traits> + template<movable _Val, typename _CharT, + typename _Traits = char_traits<_CharT>> requires default_initializable<_Val> && __detail::__stream_extractable<_Val, _CharT, _Traits> class basic_istream_view diff --git a/libstdc++-v3/testsuite/std/ranges/istream_view.cc b/libstdc++-v3/testsuite/std/ranges/istream_view.cc index 2f15f78..f5c0c2a 100644 --- a/libstdc++-v3/testsuite/std/ranges/istream_view.cc +++ b/libstdc++-v3/testsuite/std/ranges/istream_view.cc @@ -94,6 +94,15 @@ test05() ; } +void +test06() +{ + // Default template argument + using V = std::ranges::basic_istream_view<int, char>; + using W = std::ranges::basic_istream_view<int, char, std::char_traits<char>>; + static_assert( std::is_same_v<V, W> ); +} + int main() { @@ -102,4 +111,5 @@ main() test03(); test04(); test05(); + test06(); } |