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libstdc++: Use reserved form of [[__likely__]] in <variant>

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We should not use [[unlikely]] before C++20, so use [[__unlikely__]]
instead.

libstdc++-v3/ChangeLog:

	* include/std/variant (_Variant_storage::_M_reset): Use
	__unlikely__ form of attribute instead of unlikely.
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Jonathan Wakely 2024-07-05 20:00:04 +01:00 • committed by Jonathan Wakely
parent dcc735aaea
commit 9f1cd51766
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libstdc++-v3/include/std/variant
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@ -492,7 +492,7 @@ namespace __variant
constexpr void
_M_reset()
{
if (!_M_valid()) [[unlikely]]
if (!_M_valid()) [[__unlikely__]]
return;
std::__do_visit<void>([](auto&& __this_mem) mutable