First part of P0600 - '[[nodiscard] in the standard library'. Mark the 'empty()' methods of all the containers as nodiscard. If you're calling empty() w/o looking at the result, you probably meanto to call 'clear()'. c++2a only
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@318269 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/stack b/include/stack
index b2d4e23..0cb4c6c 100644
--- a/include/stack
+++ b/include/stack
@@ -181,7 +181,7 @@
: c(_VSTD::move(__s.c), __a) {}
#endif // _LIBCPP_CXX03_LANG
- _LIBCPP_INLINE_VISIBILITY
+ _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
bool empty() const {return c.empty();}
_LIBCPP_INLINE_VISIBILITY
size_type size() const {return c.size();}