[libcxx-commits] [libcxx] [libc++] Diagnose unused variables of container types (PR #203084)

[Nikolas Klauser via libcxx-commits]

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@@ -84,7 +84,7 @@ _LIBCPP_PUSH_MACROS
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Tp, class _Allocator /* = allocator<_Tp> */>
-class vector {
+class [[__gnu__::__warn_unused__]] vector {
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philnik777 wrote:

True, but I kinda doubt this is in any way common. If we find it is we can revise later.

https://github.com/llvm/llvm-project/pull/203084