================
@@ -465,6 +465,30 @@ TEST(DiagnosticTest, TemplatesInHeaders) {
"'Derived<int>' requested here")))));
}
+// Verify that non-fatal warnings originating from included headers are not
+// promoted and shown in the main file, as this would clutter the user's
+// diagnostics with warnings from code they didn't write.
----------------
ArcsinX wrote:
The code in this test shows why diagnostic can't be dropped.
We have a templated code in header, which is completely fine if a caller use it
right (e.g. f(1)), but we call it incorrectly (pass double instead of int) and
we MUST shown diagnostic here, so dropping it is not right
https://github.com/llvm/llvm-project/pull/223860
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