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| author | Jonathan Wakely <jwakely@redhat.com> | 2021-04-06 14:41:29 +0100 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2021-04-06 16:43:25 +0100 |
| commit | 406f58e1e38e92e4b881f3666b596843da308783 (patch) | |
| tree | 51ed49f19e399a73512f6b843bebe0388b0503a1 /libstdc++-v3/include/c_global | |
| parent | 41019bfae2673a818a9b7d08742f3ef91c0deade (diff) | |
| download | gcc-406f58e1e38e92e4b881f3666b596843da308783.zip gcc-406f58e1e38e92e4b881f3666b596843da308783.tar.gz gcc-406f58e1e38e92e4b881f3666b596843da308783.tar.bz2 | |
libstdc++: Add nodiscard attribute to cast-like functions
Add [[nodiscard]] to functions that are effectively just a static_cast,
as per P2351. Also add it to std::addressof.
libstdc++-v3/ChangeLog:
* include/bits/move.h (forward, move, move_if_noexcept)
(addressof): Add _GLIBCXX_NODISCARD.
* include/bits/ranges_cmp.h (identity::operator()): Add
nodiscard attribute.
* include/c_global/cstddef (to_integer): Likewise.
* include/std/bit (bit_cast): Likewise.
* include/std/utility (as_const, to_underlying): Likewise.
Diffstat (limited to 'libstdc++-v3/include/c_global')
| -rw-r--r-- | libstdc++-v3/include/c_global/cstddef | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libstdc++-v3/include/c_global/cstddef b/libstdc++-v3/include/c_global/cstddef index 11c808c..13ef7f0 100644 --- a/libstdc++-v3/include/c_global/cstddef +++ b/libstdc++-v3/include/c_global/cstddef @@ -169,6 +169,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { return __l = __l ^ __r; } template<typename _IntegerType> + [[nodiscard]] constexpr _IntegerType to_integer(__byte_op_t<_IntegerType> __b) noexcept { return _IntegerType(__b); } |