[libcxx-commits] [libcxx] [libcxx] Initialize vcruntime __std_exception_data in the exception copy ctor (PR #144329)

[Nikolas Klauser via libcxx-commits]

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@@ -48,7 +48,7 @@ class exception { // base of all library exceptions
     __data_._DoFree = true;
   }
 
-  exception(exception const&) _NOEXCEPT {}
+  exception(exception const&) _NOEXCEPT : __data_() {}
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philnik777 wrote:

Is there a reason we don't do a proper copy? What happens if two TUs are linked where we provide our own implementation while the other is provided by vcruntime?

https://github.com/llvm/llvm-project/pull/144329