[clang] More fixes for P3144R2 implementation (PR #149406)

[Harald van Dijk via cfe-commits]

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@@ -8392,17 +8392,19 @@ def ext_default_init_const : ExtWarn<
   "is a Microsoft extension">,
   InGroup<MicrosoftConstInit>;
 def err_delete_operand : Error<"cannot delete expression of type %0">;
+def err_delete_void_ptr_operand : Error<
+  "cannot delete pointer to %0">;
 def ext_delete_void_ptr_operand : ExtWarn<
-  "cannot delete expression with pointer-to-'void' type %0">,
+  "cannot delete pointer to %0">,
   InGroup<DeleteIncomplete>;
 def err_ambiguous_delete_operand : Error<
   "ambiguous conversion of delete expression of type %0 to a pointer">;
 def warn_delete_incomplete : Warning<
-  "deleting pointer to incomplete type %0 is incompatible with C++2c"
+  "deleting pointer to incomplete %select{struct|interface|union|class|enum}0 %1 is incompatible with C++2c"
----------------
hvdijk wrote:

As I wrote earlier, this is what Clang does elsewhere. Terminology for people reading the standard and terminology for end users is different, we do not and should not refer to unions as class types to end users, this would be horribly confusing.

https://github.com/llvm/llvm-project/pull/149406