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JSONKit usage here may cause serious crash hard to debug(I found the …
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…crash on simulator, on device I got nothing but app freezed)!

My app has an old version of JSONKit which is still using MRC. I think JSONKit is not needed if system version is available. Kicking out of JSONKit will make react native stronger.
Crash stack:
* thread facebook#11: tid = 0xbd672f, 0x000000010a10edeb imobii-waiqin`jk_encode_add_atom_to_buffer(encodeState=0x00007f9b820a1000, objectPtr=22 key/value pairs) + 16971 at JSONKit.m:2807, name = 'com.facebook.React.JavaScript', stop reason = EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
    frame #0: 0x000000010a10edeb imobii-waiqin`jk_encode_add_atom_to_buffer(encodeState=0x00007f9b820a1000, objectPtr=22 key/value pairs) + 16971 at JSONKit.m:2807
    frame facebook#1: 0x000000010a10ef67 imobii-waiqin`jk_encode_add_atom_to_buffer(encodeState=0x00007f9b820a1000, objectPtr=2 key/value pairs) + 17351 at JSONKit.m:2811
    frame facebook#2: 0x000000010a10ef67 imobii-waiqin`jk_encode_add_atom_to_buffer(encodeState=0x00007f9b820a1000, objectPtr=25 key/value pairs) + 17351 at JSONKit.m:2811
    frame facebook#3: 0x000000010a10e768 imobii-waiqin`jk_encode_add_atom_to_buffer(encodeState=0x00007f9b820a1000, objectPtr=@"3 elements") + 15304 at JSONKit.m:2778
  * frame facebook#4: 0x000000010a10a26a imobii-waiqin`-[JKSerializer serializeObject:options:encodeOption:block:delegate:selector:error:](self=0x00007f9b831fbc80, _cmd="serializeObject:options:encodeOption:block:delegate:selector:error:", object=@"3 elements", optionFlags=0, encodeOption=10, block=0x0000000000000000, delegate=0x0000000000000000, selector=<no value available>, error=domain: class name = NSInvocation - code: 0) + 2250 at JSONKit.m:2876
    frame facebook#5: 0x000000010a109992 imobii-waiqin`+[JKSerializer serializeObject:options:encodeOption:block:delegate:selector:error:](self=JKSerializer, _cmd="serializeObject:options:encodeOption:block:delegate:selector:error:", object=@"3 elements", optionFlags=0, encodeOption=10, block=0x0000000000000000, delegate=0x0000000000000000, selector=<no value available>, error=domain: class name = NSInvocation - code: 0) + 178 at JSONKit.m:2831
    frame facebook#6: 0x000000010a10f700 imobii-waiqin`-[NSArray(self=@"3 elements", _cmd="JSONStringWithOptions:error:", serializeOptions=0, error=domain: class name = NSInvocation - code: 0) JSONStringWithOptions:error:] + 112 at JSONKit.m:2985
    frame facebook#7: 0x000000010ac13c02 imobii-waiqin`_RCTJSONStringifyNoRetry(jsonObject=@"3 elements", error=domain: class name = NSInvocation - code: 0) + 338 at RCTUtils.m:49
    frame facebook#8: 0x000000010ac13990 imobii-waiqin`RCTJSONStringify(jsonObject=@"3 elements", error=0x0000000000000000) + 128 at RCTUtils.m:77
    frame facebook#9: 0x000000010ab5fdfa imobii-waiqin`__27-[RCTContextExecutor setUp]_block_invoke_2(.block_descriptor=<unavailable>, moduleName=@"UIManager") + 218 at RCTContextExecutor.m:363
    frame facebook#10: 0x00000001134495cc CoreFoundation`__invoking___ + 140
    frame facebook#11: 0x000000011344941e CoreFoundation`-[NSInvocation invoke] + 286
    frame facebook#12: 0x000000010db13db3 JavaScriptCore`JSC::ObjCCallbackFunctionImpl::call(JSContext*, OpaqueJSValue*, unsigned long, OpaqueJSValue const* const*, OpaqueJSValue const**) + 451
    frame facebook#13: 0x000000010db13926 JavaScriptCore`JSC::objCCallbackFunctionCallAsFunction(OpaqueJSContext const*, OpaqueJSValue*, OpaqueJSValue*, unsigned long, OpaqueJSValue const* const*, OpaqueJSValue const**) + 262
    frame facebook#14: 0x000000010db14bad JavaScriptCore`long long JSC::APICallbackFunction::call<JSC::ObjCCallbackFunction>(JSC::ExecState*) + 573
    frame facebook#15: 0x000000010dade340 JavaScriptCore`JSC::LLInt::setUpCall(JSC::ExecState*, JSC::Instruction*, JSC::CodeSpecializationKind, JSC::JSValue, JSC::LLIntCallLinkInfo*) + 528
    frame facebook#16: 0x000000010dae535d JavaScriptCore`llint_entry + 22900
    frame facebook#17: 0x000000010dadf7d9 JavaScriptCore`vmEntryToJavaScript + 326
    frame facebook#18: 0x000000010d9b1959 JavaScriptCore`JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 169
    frame facebook#19: 0x000000010d9985ad JavaScriptCore`JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 493
    frame facebook#20: 0x000000010d76cb7e JavaScriptCore`JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 62
    frame facebook#21: 0x000000010d929a55 JavaScriptCore`JSC::callGetter(JSC::ExecState*, JSC::JSValue, JSC::JSValue) + 149
    frame facebook#22: 0x000000010dad49fb JavaScriptCore`llint_slow_path_get_by_id + 2203
    frame facebook#23: 0x000000010dae22f0 JavaScriptCore`llint_entry + 10503
    frame facebook#24: 0x000000010dae5368 JavaScriptCore`llint_entry + 22911
    frame facebook#25: 0x000000010dae52fd JavaScriptCore`llint_entry + 22804
    frame facebook#26: 0x000000010dae5368 JavaScriptCore`llint_entry + 22911
    frame facebook#27: 0x000000010dae5368 JavaScriptCore`llint_entry + 22911
    frame facebook#28: 0x000000010dae52fd JavaScriptCore`llint_entry + 22804
    frame facebook#29: 0x000000010dae5368 JavaScriptCore`llint_entry + 22911
    frame facebook#30: 0x000000010dae5368 JavaScriptCore`llint_entry + 22911
    frame facebook#31: 0x000000010dae5368 JavaScriptCore`llint_entry + 22911
    frame facebook#32: 0x000000010dae552a JavaScriptCore`llint_entry + 23361
    frame facebook#33: 0x000000010dae5368 JavaScriptCore`llint_entry + 22911
    frame facebook#34: 0x000000010dae5368 JavaScriptCore`llint_entry + 22911
    frame facebook#35: 0x000000010dadf7d9 JavaScriptCore`vmEntryToJavaScript + 326
    frame facebook#36: 0x000000010d9b1959 JavaScriptCore`JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 169
    frame facebook#37: 0x000000010d998264 JavaScriptCore`JSC::Interpreter::execute(JSC::ProgramExecutable*, JSC::ExecState*, JSC::JSObject*) + 10404
    frame facebook#38: 0x000000010d7a8786 JavaScriptCore`JSC::evaluate(JSC::ExecState*, JSC::SourceCode const&, JSC::JSValue, WTF::NakedPtr<JSC::Exception>&) + 470
    frame facebook#39: 0x000000010d9f6fb8 JavaScriptCore`JSEvaluateScript + 424
    frame facebook#40: 0x000000010ab6379e imobii-waiqin`__68-[RCTContextExecutor executeApplicationScript:sourceURL:onComplete:]_block_invoke.264(.block_descriptor=<unavailable>) + 414 at RCTContextExecutor.m:589
    frame facebook#41: 0x000000010ab63262 imobii-waiqin`__68-[RCTContextExecutor executeApplicationScript:sourceURL:onComplete:]_block_invoke(.block_descriptor=<unavailable>) + 498 at RCTContextExecutor.m:589
    frame facebook#42: 0x000000010ab63df8 imobii-waiqin`-[RCTContextExecutor executeBlockOnJavaScriptQueue:](self=0x00007f9b832f6040, _cmd="executeBlockOnJavaScriptQueue:", block=0x00007f9b80c92970) + 248 at RCTContextExecutor.m:627
    frame facebook#43: 0x000000010eb1d7a7 Foundation`__NSThreadPerformPerform + 283
    frame facebook#44: 0x0000000113486301 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    frame facebook#45: 0x000000011347c22c CoreFoundation`__CFRunLoopDoSources0 + 556
    frame facebook#46: 0x000000011347b6e3 CoreFoundation`__CFRunLoopRun + 867
    frame facebook#47: 0x000000011347b0f8 CoreFoundation`CFRunLoopRunSpecific + 488
    frame facebook#48: 0x000000010ab5e41b imobii-waiqin`+[RCTContextExecutor runRunLoopThread](self=RCTContextExecutor, _cmd="runRunLoopThread") + 363 at RCTContextExecutor.m:284
    frame facebook#49: 0x000000010ebc012b Foundation`__NSThread__start__ + 1198
    frame facebook#50: 0x00000001140869b1 libsystem_pthread.dylib`_pthread_body + 131
    frame facebook#51: 0x000000011408692e libsystem_pthread.dylib`_pthread_start + 168
    frame facebook#52: 0x0000000114084385 libsystem_pthread.dylib`thread_start + 13
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@dustturtle
dustturtle committed Jul 6, 2016
1 parent 8c59644 commit bcfb4b4
Showing 1 changed file with 0 additions and 47 deletions.
47 changes: 0 additions & 47 deletions React/Base/RCTUtils.m
View file
Original file line number Diff line number Diff line change
Expand Up @@ -30,26 +30,7 @@
return nil;
}

static SEL JSONKitSelector = NULL;
static NSSet<Class> *collectionTypes;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
SEL selector = NSSelectorFromString(@"JSONStringWithOptions:error:");
if ([NSDictionary instancesRespondToSelector:selector]) {
JSONKitSelector = selector;
collectionTypes = [NSSet setWithObjects:
[NSArray class], [NSMutableArray class],
[NSDictionary class], [NSMutableDictionary class], nil];
}
});

@try {

// Use JSONKit if available and object is not a fragment
if (JSONKitSelector && [collectionTypes containsObject:[jsonObject classForCoder]]) {
return ((NSString *(*)(id, SEL, int, NSError **))objc_msgSend)(jsonObject, JSONKitSelector, 0, error);
}

// Use Foundation JSON method
NSData *jsonData = [NSJSONSerialization
dataWithJSONObject:jsonObject options:(NSJSONWritingOptions)NSJSONReadingAllowFragments
Expand Down Expand Up @@ -89,35 +70,7 @@

static id __nullable _RCTJSONParse(NSString *__nullable jsonString, BOOL mutable, NSError **error)
{
static SEL JSONKitSelector = NULL;
static SEL JSONKitMutableSelector = NULL;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
SEL selector = NSSelectorFromString(@"objectFromJSONStringWithParseOptions:error:");
if ([NSString instancesRespondToSelector:selector]) {
JSONKitSelector = selector;
JSONKitMutableSelector = NSSelectorFromString(@"mutableObjectFromJSONStringWithParseOptions:error:");
}
});

if (jsonString) {

// Use JSONKit if available and string is not a fragment
if (JSONKitSelector) {
NSInteger length = jsonString.length;
for (NSInteger i = 0; i < length; i++) {
unichar c = [jsonString characterAtIndex:i];
if (strchr("{[", c)) {
static const int options = (1 << 2); // loose unicode
SEL selector = mutable ? JSONKitMutableSelector : JSONKitSelector;
return ((id (*)(id, SEL, int, NSError **))objc_msgSend)(jsonString, selector, options, error);
}
if (!strchr(" \r\n\t", c)) {
break;
}
}
}

// Use Foundation JSON method
NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
if (!jsonData) {
Expand Down

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