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authorStanislaw Halik <sthalik@misaki.pl>2018-07-18 07:02:15 +0200
committerStanislaw Halik <sthalik@misaki.pl>2018-07-24 00:41:32 +0200
commit3ddb332e6314887378ddbd49c9ebc49fb4ae2d54 (patch)
tree1fd49f1785e30bd883e2b033a585584b554dbe8c /compat
parentea8c848d4b06db8a4701fa4eaefb94b0035b25aa (diff)
compat/macros: more decltype(auto)
Diffstat (limited to 'compat')
-rw-r--r--compat/macros.hpp12
1 files changed, 8 insertions, 4 deletions
diff --git a/compat/macros.hpp b/compat/macros.hpp
index f7fa8f73..465a7d24 100644
--- a/compat/macros.hpp
+++ b/compat/macros.hpp
@@ -75,7 +75,7 @@ using to_const_lvalue_reference_t = remove_cvref_t<t> const&;
#define eval_once__2(expr, ident) eval_once__3(expr, ident)
#define eval_once__3(expr, ident) \
- ([&] { \
+ ([&]() -> decltype(auto) { \
static auto INIT##ident = (expr); \
return static_cast<to_const_lvalue_reference_t<decltype(INIT##ident)>>(INIT##ident); \
}())
@@ -96,9 +96,13 @@ constexpr cc_forceinline void static_warn<true>() {}
#define static_warning(cond) \
static_warn<(cond)>(); \
-#define typed_progn(type, ...) (([&] () -> type { __VA_ARGS__ })())
-#define progn(...) (([&] { __VA_ARGS__ })())
-#define prog1(x, ...) (([&] { decltype(auto) ret1324 = (x); __VA_ARGS__; return ret1324; })())
+#define typed_progn(type, ...) (([&]() -> type { __VA_ARGS__ })())
+#define progn(...) (([&]() -> decltype(auto) { __VA_ARGS__ })())
+
+#define prog1(x, ...) (([&]() -> to_const_lvalue_reference_t<decltype((x))> \
+ { \
+ decltype(auto) ret1324 = (x); __VA_ARGS__; return ret1324; \
+ })())
// end c++-only macros
#endif