[analyzer] RetainCountChecker: Disable tracking for references to OSMetaClass.

[georgi_igna]

Summary

OSMetaClass does not use reference-counting. We should ignore references to OSMetaClass in class RetainSummaryManager.

[NoQ]

Please upload the actual change you want to make in the llvm.org main branch.

[georgi_igna]

some files were missing in the previous patch

[georgi_igna]

trailing whitespace solved in os_object_base.h

[georgi_igna]

whitespace issue solved

clang/test/Analysis/osobject-retain-release.cpp

void use_always_write_into_two_out_params() {
   always_write_into_two_out_params(&obj1, &obj2);
   obj1->release();
   obj2->release();
 }
 
 void use_always_write_into_two_out_params_leak() {
   OSObject *obj1;
   OSObject *obj2;
-  always_write_into_two_out_params(
-      &obj1, &obj2); // expected-note-re{{Call to function
-                     // 'always_write_into_two_out_params' writes an OSObject of
-                     // type 'OSObject' with a +1 retain count into an out
-                     // parameter 'a'{{$}}}} expected-note-re@-1{{Call to
-                     // function 'always_write_into_two_out_params' writes an
-                     // OSObject of type 'OSObject' with a +1 retain count into
-                     // an out parameter 'b'{{$}}}}
+  always_write_into_two_out_params(&obj1, &obj2); // expected-note-re{{Call to function 'always_write_into_two_out_params' writes an OSObject of type 'OSObject' with a +1 retain count into an out parameter 'a'{{$}}}}
+                                                  // expected-note-re@-1{{Call to function 'always_write_into_two_out_params' writes an OSObject of type 'OSObject' with a +1 retain count into an out parameter 'b'{{$}}}}
 } // expected-warning{{Potential leak of an object stored into 'obj1'}}
   // expected-warning@-1{{Potential leak of an object stored into 'obj2'}}
-  // expected-note@-2{{Object leaked: object allocated and stored into 'obj1' is
-  // not referenced later in this execution path and has a retain count of +1}}
-  // expected-note@-3{{Object leaked: object allocated and stored into 'obj2' is
-  // not referenced later in this execution path and has a retain count of +1}}
+  // expected-note@-2{{Object leaked: object allocated and stored into 'obj1' is not referenced later in this execution path and has a retain count of +1}}
+  // expected-note@-3{{Object leaked: object allocated and stored into 'obj2' is not referenced later in this execution path and has a retain count of +1}}
 
 char *write_into_out_param_on_nonnull(OS_RETURNS_RETAINED OSObject **obj);
 
 void use_out_param_osreturn_on_nonnull() {
   OSObject *obj;
   if (write_into_out_param_on_nonnull(&obj)) {
     obj->release();
   }