[clang] [clang-tools-extra] [clang-tidy][use-internal-linkage]fix false positives for ExportDecl (PR #117901)

[Piotr Zegar via cfe-commits]

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@@ -1236,6 +1236,17 @@ AST_MATCHER_P(TemplateArgument, equalsIntegralValue,
 extern const internal::VariadicDynCastAllOfMatcher<Stmt,
        ObjCAutoreleasePoolStmt> autoreleasePoolStmt;
 
+/// Matches any export declaration.
+///
+/// Example matches following declarations.
+/// \code
+///   export void foo();
+///   export { void foo(); }
+///   export namespace { void foo(); }
+///   export int v;
+/// \endcode
+extern const internal::VariadicDynCastAllOfMatcher<Decl, ExportDecl> exportDecl;
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PiotrZSL wrote:

Test for this matcher should be added (outside clang-tidy).

https://github.com/llvm/llvm-project/pull/117901