Bump version

entry->log_message.format appears to be garbage on iOS 15, and it doesn't look like it is ever really used in practice anyway, as far as I can tell. Thanks @matrush for pointing this out!

Classes/Core/Controllers/FLEXFilteringTableViewController.m

@@ -74,7 +74,7 @@
 #pragma mark - Search
 
 - (void)updateSearchResults:(NSString *)newText {
-    NSArray *(^filter)() = ^NSArray *{
+    NSArray *(^filter)(void) = ^NSArray *{
         self.filterText = newText;
 
         // Sections will adjust data based on this property

Classes/Core/Controllers/FLEXNavigationController.m

@@ -96,7 +96,10 @@
 - (void)dismissAnimated {
     // Tabs are only closed if the done button is pressed; this
     // allows you to leave a tab open by dragging down to dismiss
-    [FLEXTabList.sharedList closeTab:self];
+    if ([self.presentingViewController isKindOfClass:[FLEXExplorerViewController class]]) {
+        [FLEXTabList.sharedList closeTab:self];        
+    }
+    
     [self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
 }
 

Classes/Core/Controllers/FLEXTableViewController.m

@@ -559,7 +559,7 @@ static UITextField *kDummyTextField = nil;
     [self.debounceTimer invalidate];
     NSString *text = searchController.searchBar.text;
     
-    void (^updateSearchResults)() = ^{
+    void (^updateSearchResults)(void) = ^{
         if (self.searchResultsUpdater) {
             [self.searchResultsUpdater updateSearchResults:text];
         } else {

Classes/Editing/FLEXDefaultEditorViewController.h

@@ -12,7 +12,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface FLEXDefaultEditorViewController : FLEXVariableEditorViewController
 
-+ (instancetype)target:(NSUserDefaults *)defaults key:(NSString *)key commitHandler:(void(^_Nullable)())onCommit;
++ (instancetype)target:(NSUserDefaults *)defaults key:(NSString *)key commitHandler:(void(^_Nullable)(void))onCommit;
 
 + (BOOL)canEditDefaultWithValue:(nullable id)currentValue;
 

Classes/Editing/FLEXDefaultEditorViewController.m

@@ -21,7 +21,7 @@
 
 @implementation FLEXDefaultEditorViewController
 
-+ (instancetype)target:(NSUserDefaults *)defaults key:(NSString *)key commitHandler:(void(^_Nullable)())onCommit {
++ (instancetype)target:(NSUserDefaults *)defaults key:(NSString *)key commitHandler:(void(^_Nullable)(void))onCommit {
     FLEXDefaultEditorViewController *editor = [self target:defaults data:key commitHandler:onCommit];
     editor.title = @"Edit Default";
     return editor;

Classes/Editing/FLEXFieldEditorViewController.h

@@ -15,9 +15,9 @@ NS_ASSUME_NONNULL_BEGIN
 @interface FLEXFieldEditorViewController : FLEXVariableEditorViewController
 
 /// @return nil if the property is readonly or if the type is unsupported
-+ (nullable instancetype)target:(id)target property:(FLEXProperty *)property commitHandler:(void(^_Nullable)())onCommit;
++ (nullable instancetype)target:(id)target property:(FLEXProperty *)property commitHandler:(void(^_Nullable)(void))onCommit;
 /// @return nil if the ivar type is unsupported
-+ (nullable instancetype)target:(id)target ivar:(FLEXIvar *)ivar commitHandler:(void(^_Nullable)())onCommit;
++ (nullable instancetype)target:(id)target ivar:(FLEXIvar *)ivar commitHandler:(void(^_Nullable)(void))onCommit;
 
 /// Subclasses can change the button title via the \c title property
 @property (nonatomic, readonly) UIBarButtonItem *getterButton;

Classes/Editing/FLEXFieldEditorViewController.m

@@ -30,19 +30,14 @@
 
 #pragma mark - Initialization
 
-+ (instancetype)target:(id)target property:(nonnull FLEXProperty *)property commitHandler:(void(^_Nullable)())onCommit {
-    id value = [property getValue:target];
-    if (![self canEditProperty:property onObject:target currentValue:value]) {
-        return nil;
-    }
-
++ (instancetype)target:(id)target property:(nonnull FLEXProperty *)property commitHandler:(void(^_Nullable)(void))onCommit {
     FLEXFieldEditorViewController *editor = [self target:target data:property commitHandler:onCommit];
     editor.title = [@"Property: " stringByAppendingString:property.name];
     editor.property = property;
     return editor;
 }
 
-+ (instancetype)target:(id)target ivar:(nonnull FLEXIvar *)ivar commitHandler:(void(^_Nullable)())onCommit {
++ (instancetype)target:(id)target ivar:(nonnull FLEXIvar *)ivar commitHandler:(void(^_Nullable)(void))onCommit {
     FLEXFieldEditorViewController *editor = [self target:target data:ivar commitHandler:onCommit];
     editor.title = [@"Ivar: " stringByAppendingString:ivar.name];
     editor.ivar = ivar;
@@ -151,14 +146,4 @@
     }
 }
 
-+ (BOOL)canEditProperty:(FLEXProperty *)property onObject:(id)object currentValue:(id)value {
-    const FLEXTypeEncoding *typeEncoding = property.attributes.typeEncoding.UTF8String;
-    BOOL canEditType = [FLEXArgumentInputViewFactory canEditFieldWithTypeEncoding:typeEncoding currentValue:value];
-    return canEditType && [object respondsToSelector:property.likelySetter];
-}
-
-+ (BOOL)canEditIvar:(Ivar)ivar currentValue:(id)value {
-    return [FLEXArgumentInputViewFactory canEditFieldWithTypeEncoding:ivar_getTypeEncoding(ivar) currentValue:value];
-}
-
 @end

Classes/Editing/FLEXVariableEditorViewController.h

@@ -21,17 +21,17 @@ NS_ASSUME_NONNULL_BEGIN
     @protected
     id _target;
     _Nullable id _data;
-    void (^_Nullable _commitHandler)();
+    void (^_Nullable _commitHandler)(void);
 }
 
 /// @param target The target of the operation
 /// @param data The data associated with the operation
 /// @param onCommit An action to perform when the data changes 
-+ (instancetype)target:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)())onCommit;
++ (instancetype)target:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)(void))onCommit;
 /// @param target The target of the operation
 /// @param data The data associated with the operation
 /// @param onCommit An action to perform when the data changes 
-- (id)initWithTarget:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)())onCommit;
+- (id)initWithTarget:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)(void))onCommit;
 
 @property (nonatomic, readonly) id target;
 

Classes/Editing/FLEXVariableEditorViewController.m

@@ -25,11 +25,11 @@
 
 #pragma mark - Initialization
 
-+ (instancetype)target:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)())onCommit {
++ (instancetype)target:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)(void))onCommit {
     return [[self alloc] initWithTarget:target data:data commitHandler:onCommit];
 }
 
-- (id)initWithTarget:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)())onCommit {
+- (id)initWithTarget:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)(void))onCommit {
     self = [super init];
     if (self) {
         _target = target;

Classes/ExplorerInterface/FLEXExplorerViewController.m

@@ -460,17 +460,12 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
         initWithTarget:self action:@selector(handleToolbarDetailsTapGesture:)
     ];
     [toolbar.selectedViewDescriptionContainer addGestureRecognizer:self.detailsTapGR];
+    
     // Swipe gestures for selecting deeper / higher views at a point
-    UIPanGestureRecognizer *leftSwipe = [[UIPanGestureRecognizer alloc]
+    UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc]
         initWithTarget:self action:@selector(handleChangeViewAtPointGesture:)
     ];
-//    UIPanGestureRecognizer *rightSwipe = [[UIPanGestureRecognizer alloc]
-//        initWithTarget:self action:@selector(handleChangeViewAtPointGesture:)
-//    ];
-//    leftSwipe.direction = UISwipeGestureRecognizerDirectionLeft;
-//    rightSwipe.direction = UISwipeGestureRecognizerDirectionRight;
-    [toolbar.selectedViewDescriptionContainer addGestureRecognizer:leftSwipe];
-//    [toolbar.selectedViewDescriptionContainer addGestureRecognizer:rightSwipe];
+    [toolbar.selectedViewDescriptionContainer addGestureRecognizer:panGesture];
     
     // Long press gesture to present tabs manager
     [toolbar.globalsItem addGestureRecognizer:[[UILongPressGestureRecognizer alloc]

Classes/ExplorerInterface/FLEXWindowManagerController.m

@@ -72,7 +72,7 @@
     [self dismissViewControllerAnimated:YES completion:nil];
 }
 
-- (void)showRevertOrDismissAlert:(void(^)())revertBlock {
+- (void)showRevertOrDismissAlert:(void(^)(void))revertBlock {
     [self.tableView deselectRowAtIndexPath:self.tableView.indexPathForSelectedRow animated:YES];
     [self reloadData];
     [self.tableView reloadData];

Classes/ExplorerInterface/Tabs/FLEXTabList.m

@@ -80,10 +80,10 @@
 
 - (void)closeTab:(UINavigationController *)tab {
     NSParameterAssert(tab);
-    NSParameterAssert([self.openTabs containsObject:tab]);
     NSInteger idx = [self.openTabs indexOfObject:tab];
-    
-    [self closeTabAtIndex:idx];
+    if (idx != NSNotFound) {
+        [self closeTabAtIndex:idx];
+    }
 }
 
 - (void)closeTabAtIndex:(NSInteger)idx {

Classes/GlobalStateExplorers/FLEXLiveObjectsController.m

@@ -226,7 +226,10 @@ static const NSInteger kFLEXLiveObjectsSortBySizeIndex = 2;
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
     NSString *className = self.filteredClassNames[indexPath.row];
-    UIViewController *instances = [FLEXObjectListViewController instancesOfClassWithName:className];
+    UIViewController *instances = [FLEXObjectListViewController
+        instancesOfClassWithName:className
+        retained:YES
+    ];
     [self.navigationController pushViewController:instances animated:YES];
 }
 

Classes/GlobalStateExplorers/FLEXObjectListViewController.h

@@ -12,8 +12,8 @@
 
 /// This will either return a list of the instances, or take you straight
 /// to the explorer itself if there is only one instance.
-+ (UIViewController *)instancesOfClassWithName:(NSString *)className;
++ (UIViewController *)instancesOfClassWithName:(NSString *)className retained:(BOOL)retain;
 + (instancetype)subclassesOfClassWithName:(NSString *)className;
-+ (instancetype)objectsWithReferencesToObject:(id)object;
++ (instancetype)objectsWithReferencesToObject:(id)object retained:(BOOL)retain;
 
 @end

Classes/GlobalStateExplorers/FLEXObjectListViewController.m

@@ -141,45 +141,33 @@ typedef NS_ENUM(NSUInteger, FLEXObjectReferenceSection) {
     return self;
 }
 
-+ (UIViewController *)instancesOfClassWithName:(NSString *)className {
-    const char *classNameCString = className.UTF8String;
-    NSMutableArray *instances = [NSMutableArray new];
-    [FLEXHeapEnumerator enumerateLiveObjectsUsingBlock:^(__unsafe_unretained id object, __unsafe_unretained Class actualClass) {
-        if (strcmp(classNameCString, class_getName(actualClass)) == 0) {
-            // Note: objects of certain classes crash when retain is called.
-            // It is up to the user to avoid tapping into instance lists for these classes.
-            // Ex. OS_dispatch_queue_specific_queue
-            // In the future, we could provide some kind of warning for classes that are known to be problematic.
-            if (malloc_size((__bridge const void *)(object)) > 0) {
-                [instances addObject:object];
-            }
-        }
-    }];
-
-    NSArray<FLEXObjectRef *> *references = [FLEXObjectRef referencingAll:instances];
++ (UIViewController *)instancesOfClassWithName:(NSString *)className retained:(BOOL)retain {
+    NSArray<FLEXObjectRef *> *references = [FLEXHeapEnumerator
+        instancesOfClassWithName:className retained:retain
+    ];
+    
     if (references.count == 1) {
         return [FLEXObjectExplorerFactory
-                explorerViewControllerForObject:references.firstObject.object
+            explorerViewControllerForObject:references.firstObject.object
         ];
     }
 
     FLEXObjectListViewController *controller = [[self alloc] initWithReferences:references];
-    controller.title = [NSString stringWithFormat:@"%@ (%lu)", className, (unsigned long)instances.count];
+    controller.title = [NSString stringWithFormat:@"%@ (%@)", className, @(references.count)];
     return controller;
 }
 
 + (instancetype)subclassesOfClassWithName:(NSString *)className {
-    NSArray<Class> *classes = FLEXGetAllSubclasses(NSClassFromString(className), NO);
-    NSArray<FLEXObjectRef *> *references = [FLEXObjectRef referencingClasses:classes];
+    NSArray<FLEXObjectRef *> *references = [FLEXHeapEnumerator subclassesOfClassWithName:className];
     FLEXObjectListViewController *controller = [[self alloc] initWithReferences:references];
-    controller.title = [NSString stringWithFormat:@"Subclasses of %@ (%lu)",
-        className, (unsigned long)classes.count
+    controller.title = [NSString stringWithFormat:@"Subclasses of %@ (%@)",
+        className, @(references.count)
     ];
 
     return controller;
 }
 
-+ (instancetype)objectsWithReferencesToObject:(id)object {
++ (instancetype)objectsWithReferencesToObject:(id)object retained:(BOOL)retain {
     static Class SwiftObjectClass = nil;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
@@ -189,35 +177,9 @@ typedef NS_ENUM(NSUInteger, FLEXObjectReferenceSection) {
         }
     });
 
-    NSMutableArray<FLEXObjectRef *> *instances = [NSMutableArray new];
-    [FLEXHeapEnumerator enumerateLiveObjectsUsingBlock:^(__unsafe_unretained id tryObject, __unsafe_unretained Class actualClass) {
-        // Get all the ivars on the object. Start with the class and and travel up the inheritance chain.
-        // Once we find a match, record it and move on to the next object. There's no reason to find multiple matches within the same object.
-        Class tryClass = actualClass;
-        while (tryClass) {
-            unsigned int ivarCount = 0;
-            Ivar *ivars = class_copyIvarList(tryClass, &ivarCount);
-
-            for (unsigned int ivarIndex = 0; ivarIndex < ivarCount; ivarIndex++) {
-                Ivar ivar = ivars[ivarIndex];
-                NSString *typeEncoding = @(ivar_getTypeEncoding(ivar) ?: "");
-
-                if (typeEncoding.flex_typeIsObjectOrClass) {
-                    ptrdiff_t offset = ivar_getOffset(ivar);
-                    uintptr_t *fieldPointer = (__bridge void *)tryObject + offset;
-
-                    if (*fieldPointer == (uintptr_t)(__bridge void *)object) {
-                        NSString *ivarName = @(ivar_getName(ivar) ?: "???");
-                        [instances addObject:[FLEXObjectRef referencing:tryObject ivar:ivarName]];
-                        return;
-                    }
-                }
-            }
-
-            free(ivars);
-            tryClass = class_getSuperclass(tryClass);
-        }
-    }];
+    NSArray<FLEXObjectRef *> *instances = [FLEXHeapEnumerator
+        objectsWithReferencesToObject:object retained:retain
+    ];
 
     FLEXObjectListViewController *viewController = [[self alloc]
         initWithReferences:instances

Classes/GlobalStateExplorers/FLEXObjectRef.h

@@ -10,10 +10,19 @@
 
 @interface FLEXObjectRef : NSObject
 
-+ (instancetype)referencing:(id)object;
-+ (instancetype)referencing:(id)object ivar:(NSString *)ivarName;
+/// Reference an object without affecting its lifespan or or emitting reference-counting operations.
++ (instancetype)unretained:(__unsafe_unretained id)object;
++ (instancetype)unretained:(__unsafe_unretained id)object ivar:(NSString *)ivarName;
 
-+ (NSArray<FLEXObjectRef *> *)referencingAll:(NSArray *)objects;
+/// Reference an object and control its lifespan.
++ (instancetype)retained:(id)object;
++ (instancetype)retained:(id)object ivar:(NSString *)ivarName;
+
+/// Reference an object and conditionally choose to retain it or not.
++ (instancetype)referencing:(__unsafe_unretained id)object retained:(BOOL)retain;
++ (instancetype)referencing:(__unsafe_unretained id)object ivar:(NSString *)ivarName retained:(BOOL)retain;
+
++ (NSArray<FLEXObjectRef *> *)referencingAll:(NSArray *)objects retained:(BOOL)retain;
 /// Classes do not have a summary, and the reference is just the class name.
 + (NSArray<FLEXObjectRef *> *)referencingClasses:(NSArray<Class> *)classes;
 
@@ -22,6 +31,11 @@
 /// For instances, this is the result of -[FLEXRuntimeUtility summaryForObject:]
 /// For classes, there is no summary.
 @property (nonatomic, readonly) NSString *summary;
-@property (nonatomic, readonly) id object;
+@property (nonatomic, readonly, unsafe_unretained) id object;
+
+/// Retains the referenced object if it is not already retained
+- (void)retainObject;
+/// Releases the referenced object if it is already retained
+- (void)releaseObject;
 
 @end

Classes/GlobalStateExplorers/FLEXObjectRef.m

@@ -10,42 +10,68 @@
 #import "FLEXRuntimeUtility.h"
 #import "NSArray+FLEX.h"
 
-@interface FLEXObjectRef ()
+@interface FLEXObjectRef () {
+    /// Used to retain the object if desired
+    id _retainer;
+}
 @property (nonatomic, readonly) BOOL wantsSummary;
 @end
 
 @implementation FLEXObjectRef
 @synthesize summary = _summary;
 
-+ (instancetype)referencing:(id)object {
-    return [self referencing:object showSummary:YES];
++ (instancetype)unretained:(__unsafe_unretained id)object {
+    return [self referencing:object showSummary:YES retained:NO];
 }
 
-+ (instancetype)referencing:(id)object showSummary:(BOOL)showSummary {
-    return [[self alloc] initWithObject:object ivarName:nil showSummary:showSummary];
++ (instancetype)unretained:(__unsafe_unretained id)object ivar:(NSString *)ivarName {
+    return [[self alloc] initWithObject:object ivarName:ivarName showSummary:YES retained:NO];
 }
 
-+ (instancetype)referencing:(id)object ivar:(NSString *)ivarName {
-    return [[self alloc] initWithObject:object ivarName:ivarName showSummary:YES];
++ (instancetype)retained:(id)object {
+    return [self referencing:object showSummary:YES retained:YES];
 }
 
-+ (NSArray<FLEXObjectRef *> *)referencingAll:(NSArray *)objects {
++ (instancetype)retained:(id)object ivar:(NSString *)ivarName {
+    return [[self alloc] initWithObject:object ivarName:ivarName showSummary:YES retained:YES];
+}
+
++ (instancetype)referencing:(__unsafe_unretained id)object retained:(BOOL)retain {
+    return retain ? [self retained:object] : [self unretained:object];
+}
+
++ (instancetype)referencing:(__unsafe_unretained id)object ivar:(NSString *)ivarName retained:(BOOL)retain {
+    return retain ? [self retained:object ivar:ivarName] : [self unretained:object ivar:ivarName];
+}
+
++ (instancetype)referencing:(__unsafe_unretained id)object showSummary:(BOOL)showSummary retained:(BOOL)retain {
+    return [[self alloc] initWithObject:object ivarName:nil showSummary:showSummary retained:retain];
+}
+
++ (NSArray<FLEXObjectRef *> *)referencingAll:(NSArray *)objects retained:(BOOL)retain {
     return [objects flex_mapped:^id(id obj, NSUInteger idx) {
-        return [self referencing:obj showSummary:YES];
+        return [self referencing:obj showSummary:YES retained:retain];
     }];
 }
 
 + (NSArray<FLEXObjectRef *> *)referencingClasses:(NSArray<Class> *)classes {
     return [classes flex_mapped:^id(id obj, NSUInteger idx) {
-        return [self referencing:obj showSummary:NO];
+        return [self referencing:obj showSummary:NO retained:NO];
     }];
 }
 
-- (id)initWithObject:(id)object ivarName:(NSString *)ivar showSummary:(BOOL)showSummary {
+- (id)initWithObject:(__unsafe_unretained id)object
+            ivarName:(NSString *)ivar
+         showSummary:(BOOL)showSummary
+            retained:(BOOL)retain {
     self = [super init];
     if (self) {
         _object = object;
         _wantsSummary = showSummary;
+        
+        if (retain) {
+            _retainer = object;
+        }
 
         NSString *class = [FLEXRuntimeUtility safeClassNameForObject:object];
         if (ivar) {
@@ -73,4 +99,14 @@
     }
 }
 
+- (void)retainObject {
+    if (!_retainer) {
+        _retainer = _object;
+    }
+}
+
+- (void)releaseObject {
+    _retainer = nil;
+}
+
 @end

Classes/GlobalStateExplorers/FLEXWebViewController.m

@@ -38,7 +38,7 @@
     self = [self initWithNibName:nil bundle:nil];
     if (self) {
         self.originalText = text;
-        NSString *htmlString = [NSString stringWithFormat:@"<head><meta name='viewport' content='initial-scale=1.0'></head><body><pre>%@</pre></body>", [FLEXUtility stringByEscapingHTMLEntitiesInString:text]];
+        NSString *htmlString = [NSString stringWithFormat:@"<head><style>:root{ color-scheme: light dark; }</style><meta name='viewport' content='initial-scale=1.0'></head><body><pre>%@</pre></body>", [FLEXUtility stringByEscapingHTMLEntitiesInString:text]];
         [self.webView loadHTMLString:htmlString baseURL:nil];
     }
     return self;

Classes/GlobalStateExplorers/RuntimeBrowser/DataSources/FLEXRuntimeClient.m

@@ -195,7 +195,7 @@ static inline NSString * TBWildcardMap(NSString *token, NSString *candidate, TBW
             "/System/Library/PrivateFrameworks/WebKitLegacy.framework/WebKitLegacy",
             RTLD_LAZY
         );
-        void (*WebKitInitialize)() = dlsym(handle, "WebKitInitialize");
+        void (*WebKitInitialize)(void) = dlsym(handle, "WebKitInitialize");
         if (WebKitInitialize) {
             NSAssert(NSThread.isMainThread,
                 @"WebKitInitialize can only be called on the main thread"

Classes/GlobalStateExplorers/SystemLog/FLEXOSLogController.m

@@ -168,11 +168,10 @@ static uint8_t (*OSLogGetType)(void *);
             NSDate *date = [NSDate dateWithTimeIntervalSince1970:log_message->tv_gmt.tv_sec];
             
             // Get log message text
-            const char *messageText = OSLogCopyFormattedMessage(log_message);
             // https://github.com/limneos/oslog/issues/1
-            if (entry->log_message.format && !(strcmp(entry->log_message.format, messageText))) {
-                messageText = (char *)entry->log_message.format;
-            }
+            // https://github.com/FLEXTool/FLEX/issues/564
+            const char *messageText = OSLogCopyFormattedMessage(log_message) ?: "";
+
             // move messageText from stack to heap
             NSString *msg = [NSString stringWithUTF8String:messageText];
 

Classes/Network/FLEXMITMDataSource.h

@@ -11,7 +11,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface FLEXMITMDataSource<__covariant TransactionType> : NSObject
 
-+ (instancetype)dataSourceWithProvider:(NSArray<TransactionType> *(^)())future;
++ (instancetype)dataSourceWithProvider:(NSArray<TransactionType> *(^)(void))future;
 
 @property (nonatomic, readonly) NSArray<TransactionType> *transactions;
 @property (nonatomic, readonly) NSArray<TransactionType> *allTransactions;

Classes/Network/FLEXMITMDataSource.m

@@ -10,13 +10,13 @@
 #import "FLEXUtility.h"
 
 @interface FLEXMITMDataSource ()
-@property (nonatomic, readonly) NSArray *(^dataProvider)();
+@property (nonatomic, readonly) NSArray *(^dataProvider)(void);
 @property (nonatomic) NSString *filterString;
 @end
 
 @implementation FLEXMITMDataSource
 
-+ (instancetype)dataSourceWithProvider:(NSArray<id> *(^)())future {
++ (instancetype)dataSourceWithProvider:(NSArray<id> *(^)(void))future {
     FLEXMITMDataSource *ds = [self new];
     ds->_dataProvider = future;
     [ds reloadData:nil];
@@ -51,7 +51,7 @@
     } else {
         [self onBackgroundQueue:^NSArray *{
             return [self.allTransactions flex_filtered:^BOOL(FLEXNetworkTransaction *entry, NSUInteger idx) {
-                return [entry.request.URL.absoluteString localizedCaseInsensitiveContainsString:searchString];
+                return [entry matchesQuery:searchString];
             }];
         } thenOnMainQueue:^(NSArray *filteredNetworkTransactions) {
             if ([self.filterString isEqual:searchString]) {

Classes/Network/FLEXNetworkMITMViewController.m

@@ -32,6 +32,8 @@ typedef NS_ENUM(NSUInteger, FLEXNetworkObserverMode) {
 @property (nonatomic) BOOL updateInProgress;
 @property (nonatomic) BOOL pendingReload;
 
+@property (nonatomic, readonly) FLEXNetworkObserverMode mode;
+
 @property (nonatomic, readonly) FLEXMITMDataSource<FLEXNetworkTransaction *> *dataSource;
 @property (nonatomic, readonly) FLEXMITMDataSource<FLEXHTTPTransaction *> *HTTPDataSource;
 @property (nonatomic, readonly) FLEXMITMDataSource<FLEXWebsocketTransaction *> *websocketDataSource;
@@ -157,8 +159,12 @@ typedef NS_ENUM(NSUInteger, FLEXNetworkObserverMode) {
 
 #pragma mark Transactions
 
+- (FLEXNetworkObserverMode)mode {
+    return self.searchController.searchBar.selectedScopeButtonIndex;
+}
+
 - (FLEXMITMDataSource<FLEXNetworkTransaction *> *)dataSource {
-    switch (self.searchController.searchBar.selectedScopeButtonIndex) {
+    switch (self.mode) {
         case FLEXNetworkObserverModeREST:
             return self.HTTPDataSource;
         case FLEXNetworkObserverModeWebsockets:
@@ -169,7 +175,7 @@ typedef NS_ENUM(NSUInteger, FLEXNetworkObserverMode) {
     }
 }
 
-- (void)updateTransactions:(void(^)())callback {
+- (void)updateTransactions:(void(^)(void))callback {
     id completion = ^(FLEXMITMDataSource *dataSource) {
         // Update byte count
         [self updateFirstSectionHeader];
@@ -274,13 +280,13 @@ typedef NS_ENUM(NSUInteger, FLEXNetworkObserverMode) {
 
     // Get state before update
     NSString *currentFilter = self.searchText;
-    FLEXNetworkObserverMode currentMode = self.searchController.searchBar.selectedScopeButtonIndex;
+    FLEXNetworkObserverMode currentMode = self.mode;
     NSInteger existingRowCount = self.dataSource.transactions.count;
     
     [self updateTransactions:^{
         // Compare to state after update
         NSString *newFilter = self.searchText;
-        FLEXNetworkObserverMode newMode = self.searchController.searchBar.selectedScopeButtonIndex;
+        FLEXNetworkObserverMode newMode = self.mode;
         NSInteger newRowCount = self.dataSource.transactions.count;
         NSInteger rowCountDiff = newRowCount - existingRowCount;
         
@@ -392,7 +398,7 @@ typedef NS_ENUM(NSUInteger, FLEXNetworkObserverMode) {
 }
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
-    switch (self.searchController.searchBar.selectedScopeButtonIndex) {
+    switch (self.mode) {
         case FLEXNetworkObserverModeREST: {
             FLEXHTTPTransaction *transaction = [self HTTPTransactionAtIndexPath:indexPath];
             UIViewController *details = [FLEXHTTPTransactionDetailController withTransaction:transaction];
@@ -434,13 +440,14 @@ typedef NS_ENUM(NSUInteger, FLEXNetworkObserverMode) {
 
 - (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender {
     if (action == @selector(copy:)) {
-        NSURLRequest *request = [self transactionAtIndexPath:indexPath].request;
-        UIPasteboard.generalPasteboard.string = request.URL.absoluteString ?: @"";
+        UIPasteboard.generalPasteboard.string = [self transactionAtIndexPath:indexPath].copyString;
     }
 }
 
 - (UIContextMenuConfiguration *)tableView:(UITableView *)tableView contextMenuConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath point:(CGPoint)point __IOS_AVAILABLE(13.0) {
-    NSURLRequest *request = [self transactionAtIndexPath:indexPath].request;
+    
+    FLEXNetworkTransaction *transaction = [self transactionAtIndexPath:indexPath];
+    
     return [UIContextMenuConfiguration
         configurationWithIdentifier:nil
         previewProvider:nil
@@ -450,25 +457,32 @@ typedef NS_ENUM(NSUInteger, FLEXNetworkObserverMode) {
                 image:nil
                 identifier:nil
                 handler:^(__kindof UIAction *action) {
-                    UIPasteboard.generalPasteboard.string = request.URL.absoluteString ?: @"";
-                }
-            ];
-            UIAction *denylist = [UIAction
-                actionWithTitle:[NSString stringWithFormat:@"Exclude '%@'", request.URL.host]
-                image:nil
-                identifier:nil
-                handler:^(__kindof UIAction *action) {
-                    NSMutableArray *denylist =  FLEXNetworkRecorder.defaultRecorder.hostDenylist;
-                    [denylist addObject:request.URL.host];
-                    [FLEXNetworkRecorder.defaultRecorder clearExcludedTransactions];
-                    [FLEXNetworkRecorder.defaultRecorder synchronizeDenylist];
-                    [self tryUpdateTransactions];
+                    UIPasteboard.generalPasteboard.string = transaction.copyString;
                 }
             ];
+        
+            NSArray *children = @[copy];
+            if (self.mode == FLEXNetworkObserverModeREST) {
+                NSURLRequest *request = [self HTTPTransactionAtIndexPath:indexPath].request;
+                UIAction *denylist = [UIAction
+                    actionWithTitle:[NSString stringWithFormat:@"Exclude '%@'", request.URL.host]
+                    image:nil
+                    identifier:nil
+                    handler:^(__kindof UIAction *action) {
+                        NSMutableArray *denylist =  FLEXNetworkRecorder.defaultRecorder.hostDenylist;
+                        [denylist addObject:request.URL.host];
+                        [FLEXNetworkRecorder.defaultRecorder clearExcludedTransactions];
+                        [FLEXNetworkRecorder.defaultRecorder synchronizeDenylist];
+                        [self tryUpdateTransactions];
+                    }
+                ];
+                
+                children = [children arrayByAddingObject:denylist];
+            }
             return [UIMenu
                 menuWithTitle:@"" image:nil identifier:nil
                 options:UIMenuOptionsDisplayInline
-                children:@[copy, denylist]
+                children:children
             ];
         }
     ];

Classes/Network/FLEXNetworkRecorder.m

@@ -96,6 +96,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 - (void)clearRecordedActivity {
     dispatch_async(self.queue, ^{
         [self.restCache removeAllObjects];
+        [self.orderedWSTransactions removeAllObjects];
         [self.orderedHTTPTransactions removeAllObjects];
         [self.requestIDsToHTTPTransactions removeAllObjects];
         

Classes/Network/FLEXNetworkTransaction.h

@@ -22,36 +22,55 @@ typedef NS_ENUM(NSUInteger, FLEXWebsocketMessageDirection) {
     FLEXWebsocketOutgoing,
 };
 
+/// The shared base class for all types of network transactions.
+/// Subclasses should implement the descriptions and details properties, and assign a thumbnail.
 @interface FLEXNetworkTransaction : NSObject
 
-+ (instancetype)withRequest:(NSURLRequest *)request startTime:(NSDate *)startTime;
++ (instancetype)withStartTime:(NSDate *)startTime;
 
-@property (nonatomic, readonly) NSURLRequest *request;
-@property (nonatomic, readonly) NSDate *startTime;
++ (NSString *)readableStringFromTransactionState:(FLEXNetworkTransactionState)state;
 
 @property (nonatomic) NSError *error;
 /// Subclasses can override to provide error state based on response data as well
 @property (nonatomic, readonly) BOOL displayAsError;
+@property (nonatomic, readonly) NSDate *startTime;
 
 @property (nonatomic) FLEXNetworkTransactionState transactionState;
 @property (nonatomic) int64_t receivedDataLength;
 /// A small thumbnail to preview the type of/the response
 @property (nonatomic) UIImage *thumbnail;
 
-+ (NSString *)readableStringFromTransactionState:(FLEXNetworkTransactionState)state;
-
-/// Generated by this class using the URL provided by subclasses
+/// The most prominent line of the cell. Typically a URL endpoint or other distinguishing attribute.
+/// This line turns red when the transaction indicates an error.
 @property (nonatomic, readonly) NSString *primaryDescription;
+/// Something less important, such as a blob of data or the URL's domain.
 @property (nonatomic, readonly) NSString *secondaryDescription;
+/// Minor details to display at the bottom of the cell, such as a timestamp, HTTP method, or status.
 @property (nonatomic, readonly) NSString *tertiaryDescription;
 
 /// Subclasses should implement for when the transaction is complete
 @property (nonatomic, readonly) NSArray<NSString *> *details;
 
+/// The string to copy when the user selects the "copy" action
+@property (nonatomic, readonly) NSString *copyString;
+
+/// Whether or not this request should show up when the user searches for a given string
+- (BOOL)matchesQuery:(NSString *)filterString;
+
+@end
+
+/// The shared base class for all NSURL-API-related transactions.
+/// Descriptions are generated by this class using the URL provided by subclasses.
+@interface FLEXURLTransaction : FLEXNetworkTransaction
+
++ (instancetype)withRequest:(NSURLRequest *)request startTime:(NSDate *)startTime;
+
+@property (nonatomic, readonly) NSURLRequest *request;
+
 @end
 
 
-@interface FLEXHTTPTransaction : FLEXNetworkTransaction
+@interface FLEXHTTPTransaction : FLEXURLTransaction
 
 + (instancetype)request:(NSURLRequest *)request identifier:(NSString *)requestID;
 
@@ -68,7 +87,7 @@ typedef NS_ENUM(NSUInteger, FLEXWebsocketMessageDirection) {
 @end
 
 
-@interface FLEXWebsocketTransaction : FLEXNetworkTransaction
+@interface FLEXWebsocketTransaction : FLEXURLTransaction
 
 + (instancetype)withMessage:(NSURLSessionWebSocketMessage *)message
                        task:(NSURLSessionWebSocketTask *)task

Classes/Network/FLEXNetworkTransaction.m

@@ -10,14 +10,17 @@
 #import "FLEXResources.h"
 #import "FLEXUtility.h"
 
-@interface FLEXHTTPTransaction ()
-@property (nonatomic, readwrite) NSData *cachedRequestBody;
+@interface FLEXNetworkTransaction () {
+    @protected
+    
+    NSString *_primaryDescription;
+    NSString *_secondaryDescription;
+    NSString *_tertiaryDescription;
+}
+
 @end
 
 @implementation FLEXNetworkTransaction
-@synthesize primaryDescription = _primaryDescription;
-@synthesize secondaryDescription = _secondaryDescription;
-@synthesize tertiaryDescription = _tertiaryDescription;
 
 + (NSString *)readableStringFromTransactionState:(FLEXNetworkTransactionState)state {
     NSString *readableString = nil;
@@ -45,13 +48,39 @@
     return readableString;
 }
 
-+ (instancetype)withRequest:(NSURLRequest *)request startTime:(NSDate *)startTime {
++ (instancetype)withStartTime:(NSDate *)startTime {
     FLEXNetworkTransaction *transaction = [self new];
-    transaction->_request = request;
     transaction->_startTime = startTime;
     return transaction;
 }
 
+- (BOOL)displayAsError {
+    return _error != nil;
+}
+
+- (NSString *)copyString {
+    return nil;
+}
+
+- (BOOL)matchesQuery:(NSString *)filterString {
+    return NO;
+}
+
+@end
+
+
+@interface FLEXURLTransaction ()
+
+@end
+
+@implementation FLEXURLTransaction
+
++ (instancetype)withRequest:(NSURLRequest *)request startTime:(NSDate *)startTime {
+    FLEXURLTransaction *transaction = [self withStartTime:startTime];
+    transaction->_request = request;
+    return transaction;
+}
+
 - (NSString *)timestampStringFromRequestDate:(NSDate *)date {
     static NSDateFormatter *dateFormatter = nil;
     static dispatch_once_t onceToken;
@@ -101,18 +130,18 @@
 - (NSString *)tertiaryDescription {
     if (!_tertiaryDescription) {
         NSMutableArray<NSString *> *detailComponents = [NSMutableArray new];
-
+        
         NSString *timestamp = [self timestampStringFromRequestDate:self.startTime];
         if (timestamp.length > 0) {
             [detailComponents addObject:timestamp];
         }
-
+        
         // Omit method for GET (assumed as default)
         NSString *httpMethod = self.request.HTTPMethod;
         if (httpMethod.length > 0) {
             [detailComponents addObject:httpMethod];
         }
-
+        
         if (self.transactionState == FLEXNetworkTransactionStateFinished || self.transactionState == FLEXNetworkTransactionStateFailed) {
             [detailComponents addObjectsFromArray:self.details];
         } else {
@@ -120,7 +149,7 @@
             NSString *state = [self.class readableStringFromTransactionState:self.transactionState];
             [detailComponents addObject:state];
         }
-
+        
         _tertiaryDescription = [detailComponents componentsJoinedByString:@" ・ "];
     }
     
@@ -128,17 +157,24 @@
 }
 
 - (void)setTransactionState:(FLEXNetworkTransactionState)transactionState {
-    _transactionState = transactionState;
+    super.transactionState = transactionState;
     // Reset bottom description
     _tertiaryDescription = nil;
 }
 
-- (BOOL)displayAsError {
-    return _error != nil;
+- (NSString *)copyString {
+    return self.request.URL.absoluteString;
+}
+
+- (BOOL)matchesQuery:(NSString *)filterString {
+    return [self.request.URL.absoluteString localizedCaseInsensitiveContainsString:filterString];
 }
 
 @end
 
+@interface FLEXHTTPTransaction ()
+@property (nonatomic, readwrite) NSData *cachedRequestBody;
+@end
 
 @implementation FLEXHTTPTransaction
 
@@ -225,6 +261,7 @@
     // Populate receivedDataLength
     if (direction == FLEXWebsocketIncoming) {
         wst.receivedDataLength = wst.dataLength;
+        wst.transactionState = FLEXNetworkTransactionStateFinished;
     }
     
     // Populate thumbnail image

Classes/Network/PonyDebugger/FLEXNetworkObserver.m

@@ -11,10 +11,14 @@
 //  See the LICENSE file distributed with this work for the terms under
 //  which Square, Inc. licenses this file to you.
 //
+//  Heavily modified and added to by Tanner Bennett and various other contributors.
+//  git blame details these modifications.
+//
 
 #import "FLEXNetworkObserver.h"
 #import "FLEXNetworkRecorder.h"
 #import "FLEXUtility.h"
+#import "NSUserDefaults+FLEX.h"
 #import "NSObject+FLEX_Reflection.h"
 #import "FLEXMethod.h"
 
@@ -24,7 +28,6 @@
 #include <dlfcn.h>
 
 NSString *const kFLEXNetworkObserverEnabledStateChangedNotification = @"kFLEXNetworkObserverEnabledStateChangedNotification";
-static NSString *const kFLEXNetworkObserverEnabledDefaultsKey = @"com.flex.FLEXNetworkObserver.enableOnLaunch";
 
 typedef void (^NSURLSessionAsyncCompletion)(id fileURLOrData, NSURLResponse *response, NSError *error);
 typedef NSURLSessionTask * (^NSURLSessionNewTaskMethod)(NSURLSession *, id, NSURLSessionAsyncCompletion);
@@ -93,7 +96,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id<NSUR
 + (void)setEnabled:(BOOL)enabled {
     BOOL previouslyEnabled = [self isEnabled];
     
-    [NSUserDefaults.standardUserDefaults setBool:enabled forKey:kFLEXNetworkObserverEnabledDefaultsKey];
+    NSUserDefaults.standardUserDefaults.flex_networkObserverEnabled = enabled;
     
     if (enabled) {
         // Inject if needed. This injection is protected with a dispatch_once, so we're ok calling it multiple times.
@@ -107,7 +110,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id<NSUR
 }
 
 + (BOOL)isEnabled {
-    return [[NSUserDefaults.standardUserDefaults objectForKey:kFLEXNetworkObserverEnabledDefaultsKey] boolValue];
+    return NSUserDefaults.standardUserDefaults.flex_networkObserverEnabled;
 }
 
 + (void)load {
@@ -137,9 +140,11 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id<NSUR
 #pragma mark Delegate Injection Convenience Methods
 
 /// All swizzled delegate methods should make use of this guard.
-/// This will prevent duplicated sniffing when the original implementation calls up to a superclass implementation which we've also swizzled.
-/// The superclass implementation (and implementations in classes above that) will be executed without interference if called from the original implementation.
-+ (void)sniffWithoutDuplicationForObject:(NSObject *)object selector:(SEL)selector sniffingBlock:(void (^)(void))sniffingBlock originalImplementationBlock:(void (^)(void))originalImplementationBlock {
+/// This will prevent duplicated sniffing when the original implementation calls up to a superclass
+/// implementation which we've also swizzled. The superclass implementation (and implementations in
+/// classes above that) will be executed without interference if called from the original implementation.
++ (void)sniffWithoutDuplicationForObject:(NSObject *)object selector:(SEL)selector
+                           sniffingBlock:(void (^)(void))sniffingBlock originalImplementationBlock:(void (^)(void))originalImplementationBlock {
     // If we don't have an object to detect nested calls on, just run the original implementation and bail.
     // This case can happen if someone besides the URL loading system calls the delegate methods directly.
     // See https://github.com/Flipboard/FLEX/issues/61 for an example.

Classes/ObjectExplorers/FLEXObjectExplorerViewController.m

@@ -183,6 +183,7 @@
     referencesSection.selectionAction = ^(UIViewController *host) {
         UIViewController *references = [FLEXObjectListViewController
             objectsWithReferencesToObject:explorer.object
+            retained:NO
         ];
         [host.navigationController pushViewController:references animated:YES];
     };

Classes/ObjectExplorers/Sections/Shortcuts/FLEXClassShortcuts.m

@@ -27,6 +27,7 @@
             viewer:^UIViewController *(id obj) {
                 return [FLEXObjectListViewController
                     instancesOfClassWithName:NSStringFromClass(obj)
+                    retained:NO
                 ];
             }
             accessoryType:^UITableViewCellAccessoryType(id obj) {

Classes/ObjectExplorers/Sections/Shortcuts/FLEXShortcutsFactory+Defaults.h

@@ -29,3 +29,5 @@
 @interface FLEXShortcutsFactory (WebKit_Safari) @end
 
 @interface FLEXShortcutsFactory (Pasteboard) @end
+
+@interface FLEXShortcutsFactory (FirebaseFirestore) @end

Classes/ObjectExplorers/Sections/Shortcuts/FLEXShortcutsFactory+Defaults.m

@@ -441,3 +441,16 @@
     }];
 }
 @end
+
+#pragma mark - Firebase Firestore
+
+@implementation FLEXShortcutsFactory (FirebaseFirestore)
+
++ (void)load { FLEX_EXIT_IF_NO_CTORS()
+    Class FIRDocumentSnap = NSClassFromString(@"FIRDocumentSnapshot");
+    if (FIRDocumentSnap) {
+        FLEXRuntimeUtilityTryAddObjectProperty(2, data, FIRDocumentSnap, NSDictionary, PropertyKey(ReadOnly));        
+    }
+}
+
+@end

Classes/Utility/Categories/FLEXRuntime+UIKitHelpers.m

@@ -154,7 +154,10 @@ FLEXObjectExplorerDefaultsImpl
             if (value) {
                 NSString *title = @"List all references";
                 [actions addObject:[UIAction actionWithTitle:title image:nil identifier:nil handler:^(UIAction *action) {
-                    UIViewController *list = [FLEXObjectListViewController objectsWithReferencesToObject:value];
+                    UIViewController *list = [FLEXObjectListViewController
+                        objectsWithReferencesToObject:value
+                        retained:NO
+                    ];
                     [sender.navigationController pushViewController:list animated:YES];
                 }]];
             }

Classes/Utility/Categories/NSUserDefaults+FLEX.h

@@ -16,6 +16,7 @@ extern NSString * const kFLEXDefaultsHidePropertyMethodsKey;
 extern NSString * const kFLEXDefaultsHidePrivateMethodsKey;
 extern NSString * const kFLEXDefaultsShowMethodOverridesKey;
 extern NSString * const kFLEXDefaultsHideVariablePreviewsKey;
+extern NSString * const kFLEXDefaultsNetworkObserverEnabledKey;
 extern NSString * const kFLEXDefaultsNetworkHostDenylistKey;
 extern NSString * const kFLEXDefaultsDisableOSLogForceASLKey;
 extern NSString * const kFLEXDefaultsRegisterJSONExplorerKey;
@@ -27,6 +28,7 @@ extern NSString * const kFLEXDefaultsRegisterJSONExplorerKey;
 
 @property (nonatomic) double flex_toolbarTopMargin;
 
+@property (nonatomic) BOOL flex_networkObserverEnabled;
 // Not actually stored in defaults, but written to a file
 @property (nonatomic) NSArray<NSString *> *flex_networkHostDenylist;
 

Classes/Utility/Categories/NSUserDefaults+FLEX.m

@@ -15,6 +15,7 @@ NSString * const kFLEXDefaultsHidePropertyMethodsKey = @"com.flipboard.FLEX.hide
 NSString * const kFLEXDefaultsHidePrivateMethodsKey = @"com.flipboard.FLEX.hide_private_or_namespaced_methods";
 NSString * const kFLEXDefaultsShowMethodOverridesKey = @"com.flipboard.FLEX.show_method_overrides";
 NSString * const kFLEXDefaultsHideVariablePreviewsKey = @"com.flipboard.FLEX.hide_variable_previews";
+NSString * const kFLEXDefaultsNetworkObserverEnabledKey = @"com.flex.FLEXNetworkObserver.enableOnLaunch";
 NSString * const kFLEXDefaultsNetworkHostDenylistKey = @"com.flipboard.FLEX.network_host_denylist";
 NSString * const kFLEXDefaultsDisableOSLogForceASLKey = @"com.flipboard.FLEX.try_disable_os_log";
 NSString * const kFLEXDefaultsRegisterJSONExplorerKey = @"com.flipboard.FLEX.view_json_as_object";
@@ -62,6 +63,14 @@ NSString * const kFLEXDefaultsRegisterJSONExplorerKey = @"com.flipboard.FLEX.vie
     [self setDouble:margin forKey:kFLEXDefaultsToolbarTopMarginKey];
 }
 
+- (BOOL)flex_networkObserverEnabled {
+    return [self boolForKey:kFLEXDefaultsNetworkObserverEnabledKey];
+}
+
+- (void)setFlex_networkObserverEnabled:(BOOL)enabled {
+    [self setBool:enabled forKey:kFLEXDefaultsNetworkObserverEnabledKey];
+}
+
 - (NSArray<NSString *> *)flex_networkHostDenylist {
     return [NSArray arrayWithContentsOfFile:[
         self flex_defaultsPathForFile:kFLEXDefaultsNetworkHostDenylistKey

Classes/Utility/FLEXHeapEnumerator.h

@@ -7,6 +7,7 @@
 //
 
 #import <Foundation/Foundation.h>
+@class FLEXObjectRef;
 
 typedef void (^flex_object_enumeration_block_t)(__unsafe_unretained id object, __unsafe_unretained Class actualClass);
 
@@ -14,4 +15,11 @@ typedef void (^flex_object_enumeration_block_t)(__unsafe_unretained id object, _
 
 + (void)enumerateLiveObjectsUsingBlock:(flex_object_enumeration_block_t)block;
 
+/// Returned references are not validated beyond containing a valid isa.
+/// To validate them yourself, pass each reference's object to \c FLEXPointerIsValidObjcObject
++ (NSArray<FLEXObjectRef *> *)instancesOfClassWithName:(NSString *)className retained:(BOOL)retain;
++ (NSArray<FLEXObjectRef *> *)subclassesOfClassWithName:(NSString *)className;
+/// Returned references have been validated via \c FLEXPointerIsValidObjcObject
++ (NSArray<FLEXObjectRef *> *)objectsWithReferencesToObject:(id)object retained:(BOOL)retain;
+
 @end

Classes/Utility/FLEXHeapEnumerator.m

@@ -8,6 +8,9 @@
 
 #import "FLEXHeapEnumerator.h"
 #import "FLEXObjcInternal.h"
+#import "FLEXObjectRef.h"
+#import "NSObject+FLEX_Reflection.h"
+#import "NSString+FLEX.h"
 #import <malloc/malloc.h>
 #import <mach/mach.h>
 #import <objc/runtime.h>
@@ -116,4 +119,79 @@ static kern_return_t reader(__unused task_t remote_task, vm_address_t remote_add
     free(classes);
 }
 
++ (NSArray<FLEXObjectRef *> *)instancesOfClassWithName:(NSString *)className retained:(BOOL)retain {
+    const char *classNameCString = className.UTF8String;
+    NSMutableArray *instances = [NSMutableArray new];
+    [FLEXHeapEnumerator enumerateLiveObjectsUsingBlock:^(__unsafe_unretained id object, __unsafe_unretained Class actualClass) {
+        if (strcmp(classNameCString, class_getName(actualClass)) == 0) {
+            // Note: objects of certain classes crash when retain is called.
+            // It is up to the user to avoid tapping into instance lists for these classes.
+            // Ex. OS_dispatch_queue_specific_queue
+            // In the future, we could provide some kind of warning for classes that are known to be problematic.
+            if (malloc_size((__bridge const void *)(object)) > 0) {
+                [instances addObject:object];
+            }
+        }
+    }];
+
+    NSArray<FLEXObjectRef *> *references = [FLEXObjectRef referencingAll:instances retained:retain];
+    return references;
+}
+
++ (NSArray<FLEXObjectRef *> *)subclassesOfClassWithName:(NSString *)className {
+    NSArray<Class> *classes = FLEXGetAllSubclasses(NSClassFromString(className), NO);
+    NSArray<FLEXObjectRef *> *references = [FLEXObjectRef referencingClasses:classes];
+    return references;
+}
+
++ (NSArray<FLEXObjectRef *> *)objectsWithReferencesToObject:(id)object retained:(BOOL)retain {
+    static Class SwiftObjectClass = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        SwiftObjectClass = NSClassFromString(@"SwiftObject");
+        if (!SwiftObjectClass) {
+            SwiftObjectClass = NSClassFromString(@"Swift._SwiftObject");
+        }
+    });
+
+    NSMutableArray<FLEXObjectRef *> *instances = [NSMutableArray new];
+    [FLEXHeapEnumerator enumerateLiveObjectsUsingBlock:^(__unsafe_unretained id tryObject, __unsafe_unretained Class actualClass) {
+        // Skip known-invalid objects
+        if (!FLEXPointerIsValidObjcObject((__bridge void *)tryObject)) {
+            return;
+        }
+        
+        // Get all the ivars on the object. Start with the class and and travel up the
+        // inheritance chain. Once we find a match, record it and move on to the next object.
+        // There's no reason to find multiple matches within the same object.
+        Class tryClass = actualClass;
+        while (tryClass) {
+            unsigned int ivarCount = 0;
+            Ivar *ivars = class_copyIvarList(tryClass, &ivarCount);
+
+            for (unsigned int ivarIndex = 0; ivarIndex < ivarCount; ivarIndex++) {
+                Ivar ivar = ivars[ivarIndex];
+                NSString *typeEncoding = @(ivar_getTypeEncoding(ivar) ?: "");
+
+                if (typeEncoding.flex_typeIsObjectOrClass) {
+                    ptrdiff_t offset = ivar_getOffset(ivar);
+                    uintptr_t *fieldPointer = (__bridge void *)tryObject + offset;
+
+                    if (*fieldPointer == (uintptr_t)(__bridge void *)object) {
+                        NSString *ivarName = @(ivar_getName(ivar) ?: "???");
+                        id ref = [FLEXObjectRef referencing:tryObject ivar:ivarName retained:retain];
+                        [instances addObject:ref];
+                        return;
+                    }
+                }
+            }
+
+            free(ivars);
+            tryClass = class_getSuperclass(tryClass);
+        }
+    }];
+
+    return instances;
+}
+
 @end

Classes/Utility/Runtime/Objc/FLEXObjcInternal.mm

@@ -106,17 +106,18 @@ BOOL FLEXPointerIsReadable(const void *inPtr) {
         return NO;
     }
 
-    // Read the memory
-    vm_offset_t readMem = 0;
-    mach_msg_type_number_t size = 0;
 #if __arm64e__
     address = (vm_address_t)ptrauth_strip(inPtr, ptrauth_key_function_pointer);
 #else
     address = (vm_address_t)inPtr;
 #endif
-    error = vm_read(mach_task_self(), address, sizeof(uintptr_t), &readMem, &size);
+    
+    // Read the memory
+    vm_size_t size = 0;
+    char buf[sizeof(uintptr_t)];
+    error = vm_read_overwrite(mach_task_self(), address, sizeof(uintptr_t), (vm_address_t)buf, &size);
     if (error != KERN_SUCCESS) {
-        // vm_read returned an error
+        // vm_read_overwrite returned an error
         return NO;
     }
 
@@ -162,22 +163,33 @@ BOOL FLEXPointerIsValidObjcObject(const void *ptr) {
     // We check if the returned class is readable because object_getClass
     // can return a garbage value when given a non-nil pointer to a non-object
     Class cls = object_getClass((__bridge id)ptr);
-    if (cls && FLEXPointerIsReadable((__bridge void *)cls)) {
-        // Just because this pointer is readable doesn't mean whatever is at
-        // it's ISA offset is readable. We need to do the same checks on it's ISA.
-        // Even this isn't perfect, because once we call object_isClass, we're
-        // going to dereference a member of the metaclass, which may or may not
-        // be readable itself. For the time being there is no way to access it
-        // to check here, and I have yet to hard-code a solution.
-        Class metaclass = object_getClass(cls);
-        if (metaclass && FLEXPointerIsReadable((__bridge void *)metaclass)) {
-            if (object_isClass(cls)) {
-                return YES;
-            }
-        }
+    if (!cls || !FLEXPointerIsReadable((__bridge void *)cls)) {
+        return NO;
+    }
+    
+    // Just because this pointer is readable doesn't mean whatever is at
+    // it's ISA offset is readable. We need to do the same checks on it's ISA.
+    // Even this isn't perfect, because once we call object_isClass, we're
+    // going to dereference a member of the metaclass, which may or may not
+    // be readable itself. For the time being there is no way to access it
+    // to check here, and I have yet to hard-code a solution.
+    Class metaclass = object_getClass(cls);
+    if (!metaclass || !FLEXPointerIsReadable((__bridge void *)metaclass)) {
+        return NO;
+    }
+    
+    // Does the class pointer we got appear as a class to the runtime?
+    if (!object_isClass(cls)) {
+        return NO;
+    }
+    
+    // Is the allocation size at least as large as the expected instance size?
+    ssize_t instanceSize = class_getInstanceSize(cls);
+    if (malloc_size(ptr) < instanceSize) {
+        return NO;
     }
 
-    return NO;
+    return YES;
 }
 
 

Classes/Utility/Runtime/Objc/FLEXRuntimeConstants.h

@@ -42,7 +42,7 @@ typedef NS_ENUM(NSUInteger, FLEXPropertyAttribute) {
     FLEXPropertyAttributeReadOnly           = 'R',
     FLEXPropertyAttributeRetain             = '&',
     FLEXPropertyAttributeWeak               = 'W'
-};
+}; //NS_SWIFT_NAME(FLEX.PropertyAttribute);
 
 typedef NS_ENUM(char, FLEXTypeEncoding) {
     FLEXTypeEncodingNull             = '\0',
@@ -76,4 +76,4 @@ typedef NS_ENUM(char, FLEXTypeEncoding) {
     FLEXTypeEncodingBitField         = 'b',
     FLEXTypeEncodingPointer          = '^',
     FLEXTypeEncodingConst            = 'r'
-};
+}; //NS_SWIFT_NAME(FLEX.TypeEncoding);

Classes/Utility/Runtime/Objc/FLEXRuntimeSafety.h

@@ -18,7 +18,7 @@ extern CFSetRef FLEXKnownUnsafeClasses;
 static Class cNSObject = nil, cNSProxy = nil;
 
 __attribute__((constructor))
-static void FLEXInitKnownRootClasses() {
+static void FLEXInitKnownRootClasses(void) {
     cNSObject = [NSObject class];
     cNSProxy = [NSProxy class];
 }

Classes/Utility/Runtime/Objc/FLEXTypeEncodingParser.m

@@ -810,7 +810,7 @@ BOOL FLEXGetSizeAndAlignment(const char *type, NSUInteger *sizep, NSUInteger *al
     self.scan.scanLocation = scanLocation;
     
     // The return / cleanup code for when the scanned type is already clean
-    NSString * (^typeIsClean)() = ^NSString * {
+    NSString * (^typeIsClean)(void) = ^NSString * {
         NSString *clean = [self.scan.string
             substringWithRange:NSMakeRange(scanLocation, self.scan.scanLocation - scanLocation)
         ];

Classes/Utility/Runtime/Objc/Reflection/FLEXIvar.h

@@ -9,6 +9,8 @@
 
 #import "FLEXRuntimeConstants.h"
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface FLEXIvar : NSObject
 
 + (instancetype)ivar:(Ivar)ivar;
@@ -31,17 +33,19 @@
 @property (nonatomic, readonly) NSString        *details;
 /// The full path of the image that contains this ivar definition,
 /// or \c nil if this ivar was probably defined at runtime.
-@property (nonatomic, readonly) NSString        *imagePath;
+@property (nonatomic, readonly, nullable) NSString *imagePath;
 
 /// For internal use
 @property (nonatomic) id tag;
 
-- (id)getValue:(id)target;
-- (void)setValue:(id)value onObject:(id)target;
+- (nullable id)getValue:(id)target;
+- (void)setValue:(nullable id)value onObject:(id)target;
 
 /// Calls into -getValue: and passes that value into
 /// -[FLEXRuntimeUtility potentiallyUnwrapBoxedPointer:type:]
 /// and returns the result
-- (id)getPotentiallyUnboxedValue:(id)target;
+- (nullable id)getPotentiallyUnboxedValue:(id)target;
 
 @end
+
+NS_ASSUME_NONNULL_END

Classes/Utility/Runtime/Objc/Reflection/FLEXIvar.m

@@ -24,14 +24,6 @@
 
 #pragma mark Initializers
 
-- (id)init {
-    [NSException
-        raise:NSInternalInconsistencyException
-        format:@"Class instance should not be created with -init"
-    ];
-    return nil;
-}
-
 + (instancetype)ivar:(Ivar)ivar {
     return [[self alloc] initWithIvar:ivar];
 }

Classes/Utility/Runtime/Objc/Reflection/FLEXMirror.h

@@ -8,25 +8,17 @@
 //
 
 #import <Foundation/Foundation.h>
-@class FLEXMethod, FLEXProperty, FLEXIvar, FLEXProtocol;
 #import <objc/runtime.h>
+@class FLEXMethod, FLEXProperty, FLEXIvar, FLEXProtocol;
 
+NS_ASSUME_NONNULL_BEGIN
 
-#pragma mark FLEXMirror
-@interface FLEXMirror : NSObject
+#pragma mark FLEXMirror Protocol
+NS_SWIFT_NAME(FLEXMirrorProtocol)
+@protocol FLEXMirror <NSObject>
 
-/// Reflects an instance of an object or \c Class.
-/// @discussion \c FLEXMirror will immediately gather all useful information. Consider using the
-/// \c NSObject categories provided if your code will only use a few pieces of information,
-/// or if your code needs to run faster.
-///
-/// If you reflect an instance of a class then \c methods and \c properties will be populated
-/// with instance methods and properties. If you reflect a class itself, then \c methods
-/// and \c properties will be populated with class methods and properties as you'd expect.
-///
-/// @param objectOrClass An instance of an objct or a \c Class object.
-/// @return An instance of \c FLEXMirror.
-+ (instancetype)reflect:(id)objectOrClass;
+/// Swift initializer
+- (instancetype)initWithSubject:(id)objectOrClass NS_SWIFT_NAME(init(reflecting:));
 
 /// The underlying object or \c Class used to create this \c FLEXMirror instance.
 @property (nonatomic, readonly) id   value;
@@ -41,7 +33,36 @@
 @property (nonatomic, readonly) NSArray<FLEXProtocol *> *protocols;
 
 /// @return A reflection of \c value.superClass.
-@property (nonatomic, readonly) FLEXMirror *superMirror;
+@property (nonatomic, readonly, nullable) id<FLEXMirror> superMirror NS_SWIFT_NAME(superMirror);
+
+@end
+
+#pragma mark FLEXMirror Class
+@interface FLEXMirror : NSObject <FLEXMirror>
+
+/// Reflects an instance of an object or \c Class.
+/// @discussion \c FLEXMirror will immediately gather all useful information. Consider using the
+/// \c NSObject categories provided if your code will only use a few pieces of information,
+/// or if your code needs to run faster.
+///
+/// If you reflect an instance of a class then \c methods and \c properties will be populated
+/// with instance methods and properties. If you reflect a class itself, then \c methods
+/// and \c properties will be populated with class methods and properties as you'd expect.
+///
+/// @param objectOrClass An instance of an objct or a \c Class object.
+/// @return An instance of \c FLEXMirror.
++ (instancetype)reflect:(id)objectOrClass;
+
+@property (nonatomic, readonly) id   value;
+@property (nonatomic, readonly) BOOL isClass;
+@property (nonatomic, readonly) NSString *className;
+
+@property (nonatomic, readonly) NSArray<FLEXProperty *> *properties;
+@property (nonatomic, readonly) NSArray<FLEXIvar *>     *ivars;
+@property (nonatomic, readonly) NSArray<FLEXMethod *>   *methods;
+@property (nonatomic, readonly) NSArray<FLEXProtocol *> *protocols;
+
+@property (nonatomic, readonly, nullable) FLEXMirror *superMirror NS_SWIFT_NAME(superMirror);
 
 @end
 
@@ -49,12 +70,14 @@
 @interface FLEXMirror (ExtendedMirror)
 
 /// @return The method with the given name, or \c nil if one does not exist.
-- (FLEXMethod *)methodNamed:(NSString *)name;
+- (nullable FLEXMethod *)methodNamed:(nullable NSString *)name;
 /// @return The property with the given name, or \c nil if one does not exist.
-- (FLEXProperty *)propertyNamed:(NSString *)name;
+- (nullable FLEXProperty *)propertyNamed:(nullable NSString *)name;
 /// @return The instance variable with the given name, or \c nil if one does not exist.
-- (FLEXIvar *)ivarNamed:(NSString *)name;
+- (nullable FLEXIvar *)ivarNamed:(nullable NSString *)name;
 /// @return The protocol with the given name, or \c nil if one does not exist.
-- (FLEXProtocol *)protocolNamed:(NSString *)name;
+- (nullable FLEXProtocol *)protocolNamed:(nullable NSString *)name;
 
 @end
+
+NS_ASSUME_NONNULL_END

Classes/Utility/Runtime/Objc/Reflection/FLEXMirror.m

@@ -29,15 +29,15 @@
 
 #pragma mark Initialization
 + (instancetype)reflect:(id)objectOrClass {
-    return [[self alloc] initWithValue:objectOrClass];
+    return [[self alloc] initWithSubject:objectOrClass];
 }
 
-- (id)initWithValue:(id)value {
-    NSParameterAssert(value);
+- (id)initWithSubject:(id)objectOrClass {
+    NSParameterAssert(objectOrClass);
     
     self = [super init];
     if (self) {
-        _value = value;
+        _value = objectOrClass;
         [self examine];
     }
     

Classes/Utility/Runtime/Objc/Reflection/FLEXProperty.m

@@ -96,7 +96,7 @@
 
     // Return the given selector if the class responds to it
     Class cls = _cls;
-    SEL (^selectorIfValid)() = ^SEL(SEL sel) {
+    SEL (^selectorIfValid)(SEL) = ^SEL(SEL sel) {
         if (!sel || !cls) return nil;
         return [cls instancesRespondToSelector:sel] ? sel : nil;
     };

Classes/Utility/Runtime/Objc/Reflection/FLEXProtocol.h

@@ -10,6 +10,8 @@
 #import "FLEXRuntimeConstants.h"
 @class FLEXProperty, FLEXMethodDescription;
 
+NS_ASSUME_NONNULL_BEGIN
+
 #pragma mark FLEXProtocol
 @interface FLEXProtocol : NSObject
 
@@ -23,22 +25,22 @@
 /// The name of the protocol.
 @property (nonatomic, readonly) NSString *name;
 /// The required methods of the protocol, if any. This includes property getters and setters.
-@property (nonatomic, readonly) NSArray<FLEXMethodDescription *>  *requiredMethods;
+@property (nonatomic, readonly) NSArray<FLEXMethodDescription *> *requiredMethods;
 /// The optional methods of the protocol, if any. This includes property getters and setters.
-@property (nonatomic, readonly) NSArray<FLEXMethodDescription *>  *optionalMethods;
+@property (nonatomic, readonly) NSArray<FLEXMethodDescription *> *optionalMethods;
 /// All protocols that this protocol conforms to, if any.
-@property (nonatomic, readonly) NSArray<FLEXProtocol *>  *protocols;
+@property (nonatomic, readonly) NSArray<FLEXProtocol *> *protocols;
 /// The full path of the image that contains this protocol definition,
 /// or \c nil if this protocol was probably defined at runtime.
-@property (nonatomic, readonly) NSString *imagePath;
+@property (nonatomic, readonly, nullable) NSString *imagePath;
 
 /// The properties in the protocol, if any. \c nil on iOS 10+ 
-@property (nonatomic, readonly) NSArray<FLEXProperty *>  *properties API_DEPRECATED("Use the more specific accessors below", ios(2.0, 10.0));
+@property (nonatomic, readonly, nullable) NSArray<FLEXProperty *> *properties API_DEPRECATED("Use the more specific accessors below", ios(2.0, 10.0));
 
 /// The required properties in the protocol, if any.
-@property (nonatomic, readonly) NSArray<FLEXProperty *>  *requiredProperties API_AVAILABLE(ios(10.0));
+@property (nonatomic, readonly) NSArray<FLEXProperty *> *requiredProperties API_AVAILABLE(ios(10.0));
 /// The optional properties in the protocol, if any.
-@property (nonatomic, readonly) NSArray<FLEXProperty *>  *optionalProperties API_AVAILABLE(ios(10.0));
+@property (nonatomic, readonly) NSArray<FLEXProperty *> *optionalProperties API_AVAILABLE(ios(10.0));
 
 /// For internal use
 @property (nonatomic) id tag;
@@ -67,3 +69,5 @@
 /// \c YES if this is an instance method, \c NO if it is a class method, or \c nil if unspecified
 @property (nonatomic, readonly) NSNumber *instance;
 @end
+
+NS_ASSUME_NONNULL_END

Classes/Utility/Runtime/Objc/Reflection/FLEXProtocol.m

@@ -15,14 +15,6 @@
 
 @implementation FLEXProtocol
 
-- (id)init {
-    [NSException
-        raise:NSInternalInconsistencyException
-        format:@"Class instance should not be created with -init"
-    ];
-    return nil;
-}
-
 #pragma mark Initializers
 
 + (NSArray *)allProtocols {
@@ -160,6 +152,9 @@
             return [FLEXProperty property:objcproperties[i]];
         }];
         
+        _requiredProperties = @[];
+        _optionalProperties = @[];
+        
         free(objcproperties);
     }
 }

Classes/ViewHierarchy/SnapshotExplorer/FHSRangeSlider.m

@@ -37,7 +37,7 @@
 
 - (void)initSubviews {
     self.userInteractionEnabled = YES;
-    UIImageView * (^newSubviewImageView)() = ^UIImageView *(UIImage *image) {
+    UIImageView * (^newSubviewImageView)(UIImage *) = ^UIImageView *(UIImage *image) {
         UIImageView *iv = [UIImageView new];
         iv.image = image;
 //        iv.userInteractionEnabled = YES;

Classes/ViewHierarchy/SnapshotExplorer/FHSView.m

@@ -122,7 +122,7 @@
 
 /// Recursively hides all views that may be obscuring the given view and collects them
 /// in the given array. You should unhide them all when you are done.
-+ (void)hideViewsCoveringView:(UIView *)view doWhileHidden:(void(^)())block {
++ (void)hideViewsCoveringView:(UIView *)view doWhileHidden:(void(^)(void))block {
     NSMutableArray *viewsToUnhide = [NSMutableArray new];
     if ([self _hideViewsCoveringView:view root:view.window hiddenViews:viewsToUnhide]) {
         block();

Example/FLEXample/MiscNetworkRequests.m

@@ -163,6 +163,12 @@
     [task receiveMessageWithCompletionHandler:^(NSURLSessionWebSocketMessage *message, NSError *error) {
         if (!error) {
             NSLog(@"Received WS message: %@", message.string);
+            id message = [[NSURLSessionWebSocketMessage alloc] initWithString:@"Hello"];
+            [task sendMessage:message completionHandler:^(NSError *error) {
+                if (error) {
+                    NSLog(@"Error sending WS message: %@", error.localizedDescription);
+                }
+            }];
         }
     }];
 }

FLEX.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name             = "FLEX"
-  spec.version          = "4.6.0"
+  spec.version          = "4.6.1"
   spec.summary          = "A set of in-app debugging and exploration tools for iOS"
   spec.description      = <<-DESC
                         - Inspect and modify views in the hierarchy.
@@ -35,7 +35,7 @@ Pod::Spec.new do |spec|
   spec.frameworks       = [ "Foundation", "UIKit", "CoreGraphics", "ImageIO", "QuartzCore", "WebKit", "Security", "SceneKit" ]
   spec.libraries        = [ "z", "sqlite3" ]
   spec.requires_arc     = true
-  spec.compiler_flags   = "-Wno-unsupported-availability-guard -Wno-strict-prototypes"
+  spec.compiler_flags   = "-Wno-unsupported-availability-guard"
   spec.public_header_files = [ "Classes/*.h", "Classes/Manager/*.h", "Classes/Toolbar/*.h",
                                "Classes/GlobalStateExplorers/Globals/FLEXGlobalsEntry.h",
                                "Classes/Core/**/*.h", "Classes/Utility/Runtime/Objc/**/*.h",

FLEX.xcodeproj/project.pbxproj

@@ -2108,7 +2108,6 @@
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = NO;
 				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO;
-				CLANG_WARN_STRICT_PROTOTYPES = NO;
 				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				"CODE_SIGN_IDENTITY[sdk=macosx*]" = "Apple Development";
@@ -2117,13 +2116,13 @@
 				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
-                DYLIB_INSTALL_NAME_BASE = "@rpath";
+				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)",
 				);
 				INFOPLIST_FILE = Classes/Info.plist;
-                INSTALL_PATH = "@rpath";
+				INSTALL_PATH = "@rpath";
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.flipboard.$(PRODUCT_NAME:rfc1034identifier)";
@@ -2145,7 +2144,6 @@
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = NO;
 				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO;
-				CLANG_WARN_STRICT_PROTOTYPES = NO;
 				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				"CODE_SIGN_IDENTITY[sdk=macosx*]" = "Apple Development";
@@ -2154,13 +2152,13 @@
 				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
-                DYLIB_INSTALL_NAME_BASE = "@rpath";
+				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)",
 				);
 				INFOPLIST_FILE = Classes/Info.plist;
-                INSTALL_PATH = "@rpath";
+				INSTALL_PATH = "@rpath";
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.flipboard.$(PRODUCT_NAME:rfc1034identifier)";

FLEXTests/FLEXTests.m

@@ -9,6 +9,9 @@
 #import <XCTest/XCTest.h>
 #import <objc/runtime.h>
 #import "NSObject+FLEX_Reflection.h"
+#import "FLEXObjcInternal.h"
+#import "FLEXHeapEnumerator.h"
+#import "FLEXObjectRef.h"
 #import "NSArray+FLEX.h"
 #import "FLEXPropertyAttributes.h"
 #import "FLEXProperty.h"
@@ -25,6 +28,12 @@
 @end
 @implementation Subclass @end
 
+@interface NeverCreated : Subclass {
+    NSInteger a, b, c;
+}
+@end
+@implementation NeverCreated @end
+
 @interface FLEXTests : XCTestCase
 @property (nonatomic, setter=setMyFoo:) id foo;
 @end
@@ -140,4 +149,22 @@
     XCTAssertEqualObjects(@"FLEXNewRootClass", className);
 }
 
+- (void)testInvalidObjectFinding {
+    // Create something that looks like an objc object
+    uintptr_t *pointer = (uintptr_t *)calloc(1, sizeof(uintptr_t));
+    object_setClass((__bridge id)(void *)pointer, [NeverCreated class]);
+    
+    // Find that one object and assert that it is the object we just created
+    NSArray<FLEXObjectRef *> *refs = [FLEXHeapEnumerator
+        instancesOfClassWithName:@"NeverCreated" retained:NO
+    ];
+    XCTAssertEqual(refs.count, 1);
+    XCTAssertEqual((__bridge void *)refs.firstObject.object, pointer);
+    
+    // Find that the object isn't really an object
+    XCTAssertFalse(FLEXPointerIsValidObjcObject(pointer));
+    
+    free(pointer);
+}
+
 @end