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* [gcc r14-9839] libstdc++: Use char for _Utf8_view if char8_t isn't available [PR114519]
@ 2024-04-08 16:45 Jonathan Wakely
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From: Jonathan Wakely @ 2024-04-08 16:45 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:feb6a2d3569095706170c9400e93add27a66e034
commit r14-9839-gfeb6a2d3569095706170c9400e93add27a66e034
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Tue Apr 2 22:46:55 2024 +0100
libstdc++: Use char for _Utf8_view if char8_t isn't available [PR114519]
Instead of just omitting the definition of __unicode::_Utf8_view when
char8_t is disabled, we can make it use char instead.
libstdc++-v3/ChangeLog:
PR libstdc++/114519
* include/bits/unicode.h (_Utf8_view) [!__cpp_char8_t]: Define
using char instead of char8_t.
* testsuite/ext/unicode/view.cc: Use u8""sv literals to create
string views, instead of std::u8string_view.
Diff:
---
libstdc++-v3/include/bits/unicode.h | 3 +++
libstdc++-v3/testsuite/ext/unicode/view.cc | 4 ++--
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/libstdc++-v3/include/bits/unicode.h b/libstdc++-v3/include/bits/unicode.h
index 0e95c86a0b0..29813b743dc 100644
--- a/libstdc++-v3/include/bits/unicode.h
+++ b/libstdc++-v3/include/bits/unicode.h
@@ -581,6 +581,9 @@ namespace __unicode
#ifdef __cpp_char8_t
template<typename _View>
using _Utf8_view = _Utf_view<char8_t, _View>;
+#else
+ template<typename _View>
+ using _Utf8_view = _Utf_view<char, _View>;
#endif
template<typename _View>
using _Utf16_view = _Utf_view<char16_t, _View>;
diff --git a/libstdc++-v3/testsuite/ext/unicode/view.cc b/libstdc++-v3/testsuite/ext/unicode/view.cc
index 79ea2bbc6b7..ee23b0b1d8a 100644
--- a/libstdc++-v3/testsuite/ext/unicode/view.cc
+++ b/libstdc++-v3/testsuite/ext/unicode/view.cc
@@ -10,7 +10,7 @@ using namespace std::string_view_literals;
constexpr void
test_utf8_to_utf8()
{
- const std::u8string_view s8 = u8"£🇬🇧 €🇪🇺 æбçδé ♠♥♦♣ 🤡";
+ const auto s8 = u8"£🇬🇧 €🇪🇺 æбçδé ♠♥♦♣ 🤡"sv;
uc::_Utf8_view v(s8);
VERIFY( std::ranges::distance(v) == s8.size() );
VERIFY( std::ranges::equal(v, s8) );
@@ -19,7 +19,7 @@ test_utf8_to_utf8()
constexpr void
test_utf8_to_utf16()
{
- const std::u8string_view s8 = u8"£🇬🇧 €🇪🇺 æбçδé ♠♥♦♣ 🤡";
+ const auto s8 = u8"£🇬🇧 €🇪🇺 æбçδé ♠♥♦♣ 🤡"sv;
const std::u16string_view s16 = u"£🇬🇧 €🇪🇺 æбçδé ♠♥♦♣ 🤡";
uc::_Utf16_view v(s8);
VERIFY( std::ranges::distance(v) == s16.size() );
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