[clang-tools-extra] [clang-tidy] Fix false positive in bugprone-use-after-move for std::tie (PR #192895)

[Zeyi Xu via cfe-commits]

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@@ -1789,4 +1790,39 @@ void Run() {
   RegularReset(db6);
   db6.Query();
 }
+
 } // namespace custom_reinitialization
+
+// Tests for std::tie() reinitialization.
+std::pair<std::string, std::string> makeStringPair(std::string a,
+                                                   std::string b);
+
+void stdTieIsReinit() {
+  // std::tie on the LHS reinitializes all captured variables.
+  std::string a, b;
+  std::move(a);
+  std::move(b);
+  std::tie(a, b) = makeStringPair("x", "y"); // no-warning: both reinitialized
+  a.size();
+  b.size();
+}
+
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zeyi2 wrote:

Can we add tests like: `std::tie(a, std::ignore) = makeStringPair("x", "y");`?

https://github.com/llvm/llvm-project/pull/192895