[PATCH] D102863: [analyzer] RetainCountChecker: Disable tracking for references to OSMetaClass.

[Georgeta Igna via Phabricator via cfe-commits]

georgi_igna updated this revision to Diff 346838.
georgi_igna added a comment.

some files were missing in the previous patch


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D102863/new/

https://reviews.llvm.org/D102863

Files:
  clang/lib/Analysis/RetainSummaryManager.cpp
  clang/test/Analysis/os_object_base.h
  clang/test/Analysis/osobject-retain-release.cpp


Index: clang/test/Analysis/osobject-retain-release.cpp
===================================================================
--- clang/test/Analysis/osobject-retain-release.cpp
+++ clang/test/Analysis/osobject-retain-release.cpp
@@ -721,6 +721,16 @@
   obj->release();
 }
 
+void test_osmetaclass_release(){
+    const char *name = "no_name";
+    const OSMetaClass *meta = OSMetaClass::copyMetaClassWithName(name);
+    if (!meta) {
+        return;
+    } else {
+        meta->releaseMetaClass();
+    }
+}
+
 class SampleClass {
 public:
   OSObjectPtr field;
Index: clang/test/Analysis/os_object_base.h
===================================================================
--- clang/test/Analysis/os_object_base.h
+++ clang/test/Analysis/os_object_base.h
@@ -67,7 +67,13 @@
 
 struct OSMetaClass : public OSMetaClassBase {
   virtual OSObject * alloc() const;
+    
   static OSObject * allocClassWithName(const char * name);
+    
+  static const OSMetaClass * copyMetaClassWithName(const char * name);
+    
+  void releaseMetaClass() const;
+    
   virtual ~OSMetaClass(){}
 };
 
Index: clang/lib/Analysis/RetainSummaryManager.cpp
===================================================================
--- clang/lib/Analysis/RetainSummaryManager.cpp
+++ clang/lib/Analysis/RetainSummaryManager.cpp
@@ -146,14 +146,20 @@
   return !(match(SubclassM, *D, D->getASTContext()).empty());
 }
 
-static bool isOSObjectSubclass(const Decl *D) {
-  return D && isSubclass(D, "OSMetaClassBase");
+static bool isExactClass(const Decl *D, StringRef ClassName) {
+  using namespace ast_matchers;
+  DeclarationMatcher sameClassM =
+      cxxRecordDecl(hasName(std::string(ClassName)));
+  return !(match(sameClassM, *D, D->getASTContext()).empty());
 }
 
-static bool isOSObjectDynamicCast(StringRef S) {
-  return S == "safeMetaCast";
+static bool isOSObjectSubclass(const Decl *D) {
+  return D && isSubclass(D, "OSMetaClassBase") &&
+         !isExactClass(D, "OSMetaClass");
 }
 
+static bool isOSObjectDynamicCast(StringRef S) { return S == "safeMetaCast"; }
+
 static bool isOSObjectRequiredCast(StringRef S) {
   return S == "requiredMetaCast";
 }


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