[clang] [PAC] Add support for __ptrauth type qualifier (PR #100830)

[Daniil Kovalev via cfe-commits]

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@@ -956,6 +956,25 @@ def err_ptrauth_indirect_goto_addrlabel_arithmetic : Error<
   "%select{subtraction|addition}0 of address-of-label expressions is not "
   "supported with ptrauth indirect gotos">;
 
+// __ptrauth qualifier
+def err_ptrauth_qualifier_invalid : Error<
+  "%select{return types|parameter types|properties}2 may not be qualified with %select{__ptrauth|__ptrauth_restricted_intptr}1; type is %0">;
+def err_ptrauth_qualifier_cast : Error<
+  "cast types may not be qualified with __ptrauth; type is %0">;
+def err_ptrauth_qualifier_nonpointer : Error<
+  "__ptrauth qualifier may only be applied to pointer types; type here is %0">;
+def err_ptrauth_qualifier_redundant : Error<
+  "type %0 is already %1-qualified">;
+def err_ptrauth_qualifier_bad_arg_count : Error<
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kovdan01 wrote:

Is there a test for this error message?

https://github.com/llvm/llvm-project/pull/100830