Don't warn about unamed bitfield ivars in the ObjCUnusedIvarsChecker. Fixes <rdar://problem/8481311>.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117521 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/ObjCUnusedIVarsChecker.cpp b/lib/Checker/ObjCUnusedIVarsChecker.cpp
index 2523cff..edeba74 100644
--- a/lib/Checker/ObjCUnusedIVarsChecker.cpp
+++ b/lib/Checker/ObjCUnusedIVarsChecker.cpp
@@ -113,9 +113,11 @@
// (a) aren't private
// (b) explicitly marked unused
// (c) are iboutlets
+ // (d) are unnamed bitfields
if (ID->getAccessControl() != ObjCIvarDecl::Private ||
ID->getAttr<UnusedAttr>() || ID->getAttr<IBOutletAttr>() ||
- ID->getAttr<IBOutletCollectionAttr>())
+ ID->getAttr<IBOutletCollectionAttr>() ||
+ ID->isUnnamedBitfield())
continue;
M[ID] = Unused;
diff --git a/test/Analysis/unused-ivars.m b/test/Analysis/unused-ivars.m
index 14c43a8..c88d148 100644
--- a/test/Analysis/unused-ivars.m
+++ b/test/Analysis/unused-ivars.m
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fblocks -analyze -analyzer-check-objc-unused-ivars %s -verify
+// RUN: %clang_cc1 -fobjc-nonfragile-abi2 -fblocks -analyze -analyzer-check-objc-unused-ivars %s -verify
//===--- BEGIN: Delta-debugging reduced headers. --------------------------===//
@@ -95,4 +95,16 @@
@implementation RDar7353683
@end
+//===----------------------------------------------------------------------===//
+// <rdar://problem/8481311> Unused bitfield ivars trigger cause weird
+// diagnostic: "Instance variable '' in class…"
+//===----------------------------------------------------------------------===//
+@interface RDar8481311 {
+@private
+ unsigned bitfield:1; // expected-warning {{Instance variable 'bitfield' in class 'RDar8481311' is never used}}
+}
+@end
+
+@implementation RDar8481311
+@end