[clang] [clang] Infer lifetime_capture_by for STL containers (PR #117122)

[Haojian Wu via cfe-commits]

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@@ -366,3 +366,82 @@ void use() {
   capture3(std::string(), x3); // expected-warning {{object whose reference is captured by 'x3' will be destroyed at the end of the full-expression}}
 }
 } // namespace temporary_views
+
+// ****************************************************************************
+// Inferring annotation for STL containers
+// ****************************************************************************
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hokein wrote:

Instead of thoroughly testing diagnostics triggered by the implicitly-added `lifetime_capture_by` attribute, I think we can verify the attribute directly by inspecting the AST node( see `attr-gsl-owner-pointer.cpp`), and include a few small smoke tests here.

https://github.com/llvm/llvm-project/pull/117122