Basic: Add ext_delete_void_ptr_operand to -Wdelete-incomplete

This fixes PR21340.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@220442 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Basic/DiagnosticGroups.td

@@ -71,6 +71,7 @@ def GNUDesignator : DiagGroup<"gnu-designator">;
 def GNUStringLiteralOperatorTemplate :
   DiagGroup<"gnu-string-literal-operator-template">;
 
+def DeleteIncomplete : DiagGroup<"delete-incomplete">;
 def DeleteNonVirtualDtor : DiagGroup<"delete-non-virtual-dtor">;
 def AbstractFinalClass : DiagGroup<"abstract-final-class">;
 

include/clang/Basic/DiagnosticSemaKinds.td

@@ -5314,12 +5314,13 @@ def note_add_initializer : Note<
   "add an explicit initializer to initialize %0">;
 def err_delete_operand : Error<"cannot delete expression of type %0">;
 def ext_delete_void_ptr_operand : ExtWarn<
-  "cannot delete expression with pointer-to-'void' type %0">;
+  "cannot delete expression with pointer-to-'void' type %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 may cause undefined behavior">,
-  InGroup<DiagGroup<"delete-incomplete">>;
+  InGroup<DeleteIncomplete>;
 def err_delete_incomplete_class_type : Error<
   "deleting incomplete class type %0; no conversions to pointer type">;
 def err_delete_explicit_conversion : Error<

test/Misc/warning-flags.c

@@ -18,8 +18,7 @@ This test serves two purposes:
 
 The list of warnings below should NEVER grow.  It should gradually shrink to 0.
 
-CHECK: Warnings without flags (99):
-CHECK-NEXT:   ext_delete_void_ptr_operand
+CHECK: Warnings without flags (98):
 CHECK-NEXT:   ext_excess_initializers
 CHECK-NEXT:   ext_excess_initializers_in_char_array_initializer
 CHECK-NEXT:   ext_expected_semi_decl_list