From: Maciej Cencora <m.cencora@gmail.com>
To: gcc-patches@gcc.gnu.org
Subject: [PATCH] tree: Fix up tree_code_{length,type}
Date: Fri, 27 Jan 2023 21:44:21 +0100 [thread overview]
Message-ID: <CAPFqmUq6ToGT1m1LhOA1T9U+i2h+m7Eg_sJEr=GzCPXKwiFcNQ@mail.gmail.com> (raw)
Hi,
you can emulate C++17 inline variables in C++11 with either of the two ways:
1) via a template helper
template <typename = void>
struct Helper
{
static constexpr unsigned value[4] = {1, 2, 3, 4};
};
template <typename T>
constexpr unsigned Helper<T>::value[4];
static constexpr auto& arr = Helper<>::value;
2) extern constexpr + weak attribute
[[gnu::weak]] extern constexpr unsigned arr[] = {1, 2, 3, 4};
Regards,
Maciej
next reply other threads:[~2023-01-27 20:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-27 20:44 Maciej Cencora [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-11-18 18:05 [PATCH] constexprify some tree variables apinski
2023-01-26 14:45 ` Patrick Palka
2023-01-26 15:59 ` [PATCH] tree: Fix up tree_code_{length,type} Jakub Jelinek
2023-01-26 18:03 ` Patrick Palka
2023-01-27 12:40 ` Patrick Palka
2023-01-27 13:14 ` Richard Biener
2023-01-27 7:42 ` Richard Biener
2023-01-27 8:57 ` Jakub Jelinek
2023-01-27 9:49 ` Richard Biener
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