[clang] [Clang][UnsafeBufferUsage] Warn about two-arg string_view constructors. (PR #180471)

[Rohan Jacob-Rao via cfe-commits]

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@@ -0,0 +1,37 @@
+// RUN: %clang_cc1 -std=c++20 -Wunsafe-buffer-usage -verify %s
+
+namespace std {
+  typedef __SIZE_TYPE__ size_t;
+
+  template <typename CharT>
+  class basic_string_view {
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rohanjr wrote:

It looks like you're implicitly supporting `basic_string_view`s containing types other than `char`. If that's true, could you add one test for a type other than `char`?

https://github.com/llvm/llvm-project/pull/180471