const BinaryOperator *BO) {
VisitStmt(BO);
- if (BO->getOpcode() != BO_Assign)
+ // Do we assign/compare against zero? If yes, check the variable we are
+ // assigning to.
+ BinaryOperatorKind Opcode = BO->getOpcode();
+ if (Opcode != BO_Assign &&
+ Opcode != BO_EQ &&
+ Opcode != BO_NE)
return;
- // Do we assign zero?
- if (!isZero(BO->getRHS()))
- return;
+ if (isZero(BO->getRHS())) {
+ check(BO->getLHS());
+ return;
+ }
- // Check the variable we are assigning to.
- check(BO->getLHS());
+ if (Opcode != BO_Assign && isZero(BO->getLHS())) {
+ check(BO->getRHS());
+ return;
+ }
}
void IvarInvalidationChecker::MethodCrawler::VisitObjCMessageExpr(
// RUN: %clang_cc1 -analyze -analyzer-checker=core,alpha.osx.cocoa.InstanceVariableInvalidation -fobjc-default-synthesize-properties -verify %s
+extern void __assert_fail (__const char *__assertion, __const char *__file,
+ unsigned int __line, __const char *__function)
+ __attribute__ ((__noreturn__));
+
+#define assert(expr) \
+ ((expr) ? (void)(0) : __assert_fail (#expr, __FILE__, __LINE__, __func__))
@protocol NSObject
@end
@interface Child: Parent <Invalidation2, IDEBuildable>
@end
-@implementation Parent
+@implementation Parent{
+ @private
+ Invalidation2Class *Ivar10;
+ Invalidation2Class *Ivar11;
+ Invalidation2Class *Ivar12;
+}
+
@synthesize ObjB = _ObjB;
- (void)invalidate{
_ObjB = ((void*)0);
+
+ assert(Ivar10 == 0);
+
+ if (__builtin_expect(!(Ivar11 == ((void*)0)), 0))
+ assert(0);
+
+ assert(0 == Ivar12);
+
}
@end