[objc] add test for strong/weak self references

Reviewed By: jeremydubreil

Differential Revision: D12900490

fbshipit-source-id: 8707dc049

infer/tests/build_systems/codetoanalyze/objc_retain_cycles_weak/TimeSpent.m

@@ -11,10 +11,14 @@
 @interface TimeSpent () {
   AnalyticsTimeSpent* _timeSpent;
 }
+
+@property(weak) TimeSpent* weakSelfRef;
+@property(strong) TimeSpent* strongSelfRef;
 @end
 
 @implementation TimeSpent {
   ListAdapter* _listAdapter;
+  TimeSpent* _strongSelfRef2;
 }
 
 - (instancetype)init {
@@ -29,6 +33,20 @@
   return self;
 }
 
+- (instancetype)init_bad_ref {
+  if (self = [super init]) {
+    _weakSelfRef = self;
+    _strongSelfRef = self;
+  }
+}
+
+- (instancetype)init_bad_ref2 {
+  if (self = [super init]) {
+    _weakSelfRef = self;
+    _strongSelfRef2 = self;
+  }
+}
+
 - (instancetype)init_bad {
   if (self = [super init]) {
     _listAdapter.dataSourceStrong = self;

infer/tests/build_systems/objc_retain_cycles_weak/issues.exp

@@ -1,2 +1,4 @@
 build_systems/codetoanalyze/objc_retain_cycles_weak/TimeSpent.m, TimeSpent_init_bad, 2, RETAIN_CYCLE, no_bucket, ERROR, [start of procedure init_bad,Taking true branch,start of procedure setDataSourceStrong:,return from a call to ListAdapter_setDataSourceStrong:]
+build_systems/codetoanalyze/objc_retain_cycles_weak/TimeSpent.m, TimeSpent_init_bad_ref, 3, RETAIN_CYCLE, no_bucket, ERROR, [start of procedure init_bad_ref,Taking true branch]
+build_systems/codetoanalyze/objc_retain_cycles_weak/TimeSpent.m, TimeSpent_init_bad_ref2, 3, RETAIN_CYCLE, no_bucket, ERROR, [start of procedure init_bad_ref2,Taking true branch]
 build_systems/codetoanalyze/objc_retain_cycles_weak/TimeSpent.m, retain_cycle_weak_bad, 4, RETAIN_CYCLE, no_bucket, ERROR, [start of procedure retain_cycle_weak_bad(),start of procedure init,start of procedure initWithDelegate:,Executing synthesized setter setDelegate:,return from a call to AnalyticsTimeSpent_initWithDelegate:,return from a call to TimeSpent_init,start of procedure initWithStrongDelegate:,return from a call to AnalyticsTimeSpent_initWithStrongDelegate:,start of procedure setAnalyticsTimeSpent:,return from a call to TimeSpent_setAnalyticsTimeSpent:]