WebKit checkers: recgonize @yES / @no as safe constants (llvm#148721)

Author: rniwa

clang/lib/StaticAnalyzer/Checkers/WebKit/ASTUtils.cpp

@@ -178,7 +178,10 @@ bool tryToFindPtrOrigin(
       E = unaryOp->getSubExpr();
       continue;
     }
-
+    if (auto *BoxedExpr = dyn_cast<ObjCBoxedExpr>(E)) {
+      E = BoxedExpr->getSubExpr();
+      continue;
+    }
     break;
   }
   // Some other expression.

clang/test/Analysis/Checkers/WebKit/unretained-call-args.mm

@@ -328,13 +328,17 @@ void foo() {
   }
 }
 
+#define YES 1
+
 namespace call_with_cf_constant {
   void bar(const NSArray *);
   void baz(const NSDictionary *);
+  void boo(NSNumber *);
   void foo() {
     CFArrayCreateMutable(kCFAllocatorDefault, 10);
     bar(@[@"hello"]);
     baz(@{@"hello": @3});
+    boo(@YES);
   }
 }