[clang] Add std::span to the default gsl pointer annotation list. (#99622)

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Differential Revision: https://phabricator.intern.facebook.com/D60251408

Author: hokein

clang/lib/Sema/SemaAttr.cpp

@@ -193,6 +193,7 @@ void Sema::inferGslOwnerPointerAttribute(CXXRecordDecl *Record) {
       "basic_string_view",
       "reference_wrapper",
       "regex_iterator",
+      "span",
   };
 
   if (!Record->getIdentifier())