[clang] [-Wunsafe-buffer-usage] Add a new warning for uses of std::span two-parameter constructors (PR #77148)

[via cfe-commits]

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@@ -2256,6 +2256,10 @@ class UnsafeBufferUsageReporter : public UnsafeBufferUsageHandler {
         Range = UO->getSubExpr()->getSourceRange();
         MsgParam = 1;
       }
+    } else if (const auto *CtorExpr = dyn_cast<CXXConstructExpr>(Operation)) {
+      S.Diag(CtorExpr->getLocation(),
+             diag::warn_unsafe_buffer_usage_in_container)
+          << 0;
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jkorous-apple wrote:

Assuming we remove the warning message parameter we should not pass the argument here.

https://github.com/llvm/llvm-project/pull/77148