Since r12-4065 std::basic_string is always nothrow-move-constructible,
so filesystem::path is too.
That also means that path::_S_convert(T) is noexcept when returning its
argument, because T is either a basci_string or basic_string_view, and
will be moved into the return value.
libstdc++-v3/ChangeLog:
* include/bits/fs_path.h (path(path&&)): Make unconditionally
noexcept.
(path::_S_convert(T)): Add condtional noexcept.
Tested powerpc64le-linux. Committed to trunk.
commit 373acac1c8f2d64409ccea6aea409a0e15e80a6a
Author: Jonathan Wakely <[email protected]>
Date: Thu Oct 14 13:58:02 2021
libstdc++: Make filesystem::path(path&&) always noexcept
Since r12-4065 std::basic_string is always nothrow-move-constructible,
so filesystem::path is too.
That also means that path::_S_convert(T) is noexcept when returning its
argument, because T is either a basci_string or basic_string_view, and
will be moved into the return value.
libstdc++-v3/ChangeLog:
* include/bits/fs_path.h (path(path&&)): Make unconditionally
noexcept.
(path::_S_convert(T)): Add condtional noexcept.
diff --git a/libstdc++-v3/include/bits/fs_path.h
b/libstdc++-v3/include/bits/fs_path.h
index a63e4b9ab07..d13fb12455c 100644
--- a/libstdc++-v3/include/bits/fs_path.h
+++ b/libstdc++-v3/include/bits/fs_path.h
@@ -316,10 +316,7 @@ namespace __detail
path(const path& __p) = default;
- path(path&& __p)
-#if _GLIBCXX_USE_CXX11_ABI || _GLIBCXX_FULLY_DYNAMIC_STRING == 0
- noexcept
-#endif
+ path(path&& __p) noexcept
: _M_pathname(std::move(__p._M_pathname)),
_M_cmpts(std::move(__p._M_cmpts))
{ __p.clear(); }
@@ -624,6 +621,7 @@ namespace __detail
template<typename _Tp>
static auto
_S_convert(_Tp __str)
+ noexcept(is_same_v<typename _Tp::value_type, value_type>)
{
if constexpr (is_same_v<typename _Tp::value_type, value_type>)
return __str; // No conversion needed.
