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| author | Stanislaw Halik <sthalik@misaki.pl> | 2019-02-28 20:01:17 +0100 |
|---|---|---|
| committer | Stanislaw Halik <sthalik@misaki.pl> | 2019-02-28 20:03:57 +0100 |
| commit | 87838c82cf6848cf5dc4bc95a82c7b127c4a9d83 (patch) | |
| tree | b8a404b2062664c5106dc95725fb03f9519b3579 /compat/macros1.h | |
| parent | c6c57b868f418f4566b2d6773e04300a313f41a6 (diff) | |
compat/macros: move more macros to macros1
Actually `macros.hpp' should become a util header.
Diffstat (limited to 'compat/macros1.h')
| -rw-r--r-- | compat/macros1.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/compat/macros1.h b/compat/macros1.h index b1137e63..5e3129d5 100644 --- a/compat/macros1.h +++ b/compat/macros1.h @@ -39,3 +39,9 @@ #else # define unreachable() do { __builtin_unreachable(); *(volatile int*)nullptr = 0; } while (0) /* NOLINT(clang-analyzer-core.NullDereference) */ #endif + +#ifdef __cplusplus +# define progn(...) ([&]() -> decltype(auto) { __VA_ARGS__ }()) +# define eval_once(expr) eval_once2(expr, __COUNTER__) +# define eval_once2(expr, ctr) ([&] { [[maybe_unused]] static auto init ## ctr = (((void)(expr)), 0); }()) +#endif |