Hi,

First of all thank you for this great library! I discovered it a few days ago, and I don't think I'll be able to look back!

I'm having a few issues trying to make it work in 32-bit (i386) with XCode 5 and OSX 10.9. Everything works great in 64-bit and it doesn't seem to change anything to build the library in 32 or 64 bit, a crash always happen in the same file if I try to run the application in 32-bit.

I've found a post on the forum from a few years ago that seams to be related to my problem as everything seems to happen in that same CallCDeclFunctionObjLast, but what I found in the post didn't helped and that bug seems to have been corrected since a few release anyway (that was in 2012!).

If it's relevant, I think that the function the engine is trying to execute is the constructor of an object I registered that way:

   template<typename T, typename P1, typename P2>
       static void constructor(P1 p1, P2 p2, T* ptr) { new (ptr) T(p1,p2); }

r = engine->RegisterObjectBehaviour(name.c_str(),
                                    asBEHAVE_CONSTRUCT,
                                    ( "void f("+type+","+type+")" ).c_str(),
                                    asFUNCTION((BindingHelper::constructor<ci::Vec2<T>,T,T>)),
                                    asCALL_CDECL_OBJLAST); assert( r >= 0 );

Actually if I build the library without any debug symbols the only message I got is "error: memory read failed for 0xd04fae00" so that might have something to do with how I handle constructors (which seem to be the way to do it according to the wiki)

So basically I'm a bit lost and wanted to know if that's a known issue, if anyone experienced the same with XCode5/llvm/32bit or if I'm just doing something wrong in my script/binding code.

Any suggestions are welcome!

Thanks a lot!

Simon.

Here's a few more informations;

The crash described above seems to happen at the construction of an object type I registered :

Basic`CallCDeclFunctionObjLast(void const*, unsigned long const*, int, void (*)()) + 153:
0x1d5079:  calll  *12(%ebx)
0x1d507c:  addl   8(%ebx), %esp <------- EXC_BAD_ACCESS HERE
0x1d507f:  addl   $4, %esp
0x1d5082:  popl   %esp
0x1d5083:  popl   %ebx
0x1d5084:  leal   -40(%ebp), %ecx
0x1d5087:  movl   %eax, (%ecx)
0x1d5089:  movl   %edx, 4(%ecx)
0x1d508c:  movl   -40(%ebp), %eax
0x1d508f:  movl   -36(%ebp), %edx
0x1d5092:  movl   (%ebx), %ecx
0x1d5094:  movl   -16(%ebp), %esi
0x1d5097:  cmpl   %esi, %ecx
0x1d5099:  movl   %edx, -60(%ebp)
0x1d509c:  movl   %eax, -64(%ebp)
0x1d509f:  jne    0x1d50b3                  ; CallCDeclFunctionObjLast(void const*, unsigned long const*, int, void (*)()) + 211 at as_callfunc_x86.cpp:460
0x1d50a5:  movl   -64(%ebp), %eax
0x1d50a8:  movl   -60(%ebp), %edx
0x1d50ab:  addl   $60, %esp
0x1d50ae:  popl   %esi
0x1d50af:  popl   %edi
0x1d50b0:  popl   %ebx
0x1d50b1:  popl   %ebp
0x1d50b2:  ret    
0x1d50b3:  calll  0x2b109c                  ; symbol stub for: __stack_chk_fail

Now if I remove all my registration code and only register the stdstring add_on the crash happen in StringFactory/asCThreadReadWriteLock::AcquiredShared(). Here's the disassembly from CallCDeclFunction:

Basic`CallCDeclFunction(unsigned long const*, int, void (*)()) + 137:
0x1d4c09:  calll  *8(%ebx)
0x1d4c0c:  addl   4(%ebx), %esp <------- EXC_BAD_ACCESS HERE
0x1d4c0f:  popl   %esp
0x1d4c10:  popl   %ebx
0x1d4c11:  leal   -32(%ebp), %ecx
0x1d4c14:  movl   %eax, (%ecx)
0x1d4c16:  movl   %edx, 4(%ecx)
0x1d4c19:  movl   -32(%ebp), %eax
0x1d4c1c:  movl   -28(%ebp), %edx
0x1d4c1f:  movl   (%edi), %ecx
0x1d4c21:  movl   -12(%ebp), %esi
0x1d4c24:  cmpl   %esi, %ecx
0x1d4c26:  movl   %edx, -48(%ebp)
0x1d4c29:  movl   %eax, -52(%ebp)
0x1d4c2c:  jne    0x1d4c3f                  ; CallCDeclFunction(unsigned long const*, int, void (*)()) + 191 at as_callfunc_x86.cpp:355
0x1d4c32:  movl   -52(%ebp), %eax
0x1d4c35:  movl   -48(%ebp), %edx
0x1d4c38:  addl   $48, %esp
0x1d4c3b:  popl   %esi
0x1d4c3c:  popl   %edi
0x1d4c3d:  popl   %ebp
0x1d4c3e:  ret    
0x1d4c3f:  calll  0x2b109c                  ; symbol stub for: __stack_chk_fail

Thanks a lot for the quick reply!

Here's the only way I know in xcode to generate assembly code for a specific file. The file is quite big, xcode seems to generate a huge amount of code! I'm going to see if I'm doing it right.

Here's the value for the arguments.... It doesn't look good!

s const char * "\x98\x91*" 0x01c8ff50
*s const char '\x98' '\x98'
length asUINT 3221215084 3221215084

Indeed sorry about that! Don't know how, but I did accidentally turned back in 64bit when I generated the assembly code.

Here's the updated file:

https://www.dropbox.com/s/eed2g944afig8ce/scriptstdstring%20assembly.asm

Unfortunately everything I link in my application is compiled in 32bit, but I'll try to dig a bit more!

Here's the full callstack if it helps :

#0	0x9797b540 in misaligned_stack_error_ ()
#1	0x014815c0 in 0x014815c0 ()
#2	0x002aae37 in asCThreadReadWriteLock::AcquireShared() at angelscript/angelscript/source/as_thread.cpp:409
#3	0x00279158 in asCScriptEngine::GetUserData(unsigned long) const at angelscript/angelscript/source/as_scriptengine.cpp:905
#4	0x000b8244 in StringFactory(unsigned int, char const*) at angelscript/add_on/scriptstdstring/scriptstdstring.cpp:47
#5	0x001d4c0c in CallCDeclFunction(unsigned long const*, int, void (*)()) ()
#6	0x001d47e9 in CallSystemFunctionNative(asCContext*, asCScriptFunction*, void*, unsigned long*, void*, unsigned long long&) at angelscript/angelscript/source/as_callfunc_x86.cpp:158
#7	0x001d3bde in CallSystemFunction(int, asCContext*, void*) at angelscript/angelscript/source/as_callfunc.cpp:487
#8	0x0022bc4d in asCContext::ExecuteNext() at angelscript/angelscript/source/as_context.cpp:2320
#9	0x0022a0ea in asCContext::Execute() at angelscript/angelscript/source/as_context.cpp:1149
#10	0x0009cbbc in as::Script::executeFunction() at src/Script.cpp:153
#11	0x0009cceb in as::Script::call(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) at src/Script.cpp:170
#12	0x00006f0c in BasicApp::setup()::$_0::operator()(std::__1::shared_ptr<cinder::DataSource>) const at src/BasicApp.cpp:49
#13	0x00006b98 in decltype(std::__1::forward<BasicApp::setup()::$_0&>(fp)(std::__1::forward<std::__1::shared_ptr<cinder::DataSource> >(fp0))) std::__1::__invoke<BasicApp::setup()::$_0&, std::__1::shared_ptr<cinder::DataSource> >(BasicApp::setup()::$_0&&&, std::__1::shared_ptr<cinder::DataSource>&&) [inlined] at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/__functional_base:344
#14	0x00006b4b in std::__1::__function::__func<BasicApp::setup()::$_0, std::__1::allocator<BasicApp::setup()::$_0>, void (std::__1::shared_ptr<cinder::DataSource>)>::operator()(std::__1::shared_ptr<cinder::DataSource>&&) at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/functional:1059
#15	0x00082220 in std::__1::function<void (std::__1::shared_ptr<cinder::DataSource>)>::operator()(std::__1::shared_ptr<cinder::DataSource>) const at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/functional:1435
#16	0x0008109e in AssetManager::Loader::notify() at /Frameworks/Cinder/cinder_master/blocks/Cinder-AngelScript/samples/Basic/blocks/AssetManager/src/AssetManager.cpp:24
#17	0x00081760 in AssetManager::load(boost::filesystem::path const&, std::__1::function<void (std::__1::shared_ptr<cinder::DataSource>)>, AssetManager::Options const&) at /Frameworks/Cinder/cinder_master/blocks/Cinder-AngelScript/samples/Basic/blocks/AssetManager/src/AssetManager.cpp:41
#18	0x00003783 in BasicApp::setup() at /Frameworks/Cinder/cinder_master/blocks/Cinder-AngelScript/samples/Basic/src/BasicApp.cpp:44
#19	0x000d1685 in cinder::app::App::privateSetup__() at /Frameworks/Cinder/cinder_master/src/cinder/app/App.cpp:132
#20	0x000d3782 in -[AppImplCocoaBasic applicationDidFinishLaunching:] at /Frameworks/Cinder/cinder_master/src/cinder/app/AppImplCocoaBasic.mm:91
#21	0x90c6d692 in __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke ()
#22	0x98c077e4 in __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ ()
#23	0x98ae93fb in _CFXNotificationPost ()
#24	0x90c5bebf in -[NSNotificationCenter postNotificationName:object:userInfo:] ()
#25	0x97edd7d5 in -[NSApplication _postDidFinishNotification] ()
#26	0x97edd475 in -[NSApplication _sendFinishLaunchingNotification] ()
#27	0x97ed9da4 in -[NSApplication(NSAppleEventHandling) _handleAEOpenEvent:] ()
#28	0x97ed9691 in -[NSApplication(NSAppleEventHandling) _handleCoreEvent:withReplyEvent:] ()
#29	0x97407304 in -[NSObject performSelector:withObject:withObject:] ()
#30	0x90c7c3fa in __76-[NSAppleEventManager setEventHandler:andSelector:forEventClass:andEventID:]_block_invoke ()
#31	0x90c7bf31 in -[NSAppleEventManager dispatchRawAppleEvent:withRawReply:handlerRefCon:] ()
#32	0x90c7bd3b in _NSAppleEventManagerGenericHandler ()
#33	0x925c2b15 in aeDispatchAppleEvent(AEDesc const*, AEDesc*, unsigned long, unsigned char*) ()
#34	0x92591ed6 in dispatchEventAndSendReply(AEDesc const*, AEDesc*) ()
#35	0x92591dce in aeProcessAppleEvent ()
#36	0x990707c1 in AEProcessAppleEvent ()
#37	0x97ed53a8 in _DPSNextEvent ()
#38	0x97ed4ad0 in -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] ()
#39	0x97ec735c in -[NSApplication run] ()
#40	0x000e5e63 in cinder::app::AppBasic::launch(char const*, int, char* const*) at /Frameworks/Cinder/cinder_master/src/cinder/app/AppBasic.cpp:128
#41	0x000d2d16 in cinder::app::App::executeLaunch(cinder::app::App*, std::__1::shared_ptr<cinder::app::Renderer>, char const*, int, char* const*) at /Frameworks/Cinder/cinder_master/src/cinder/app/App.cpp:553
#42	0x0006e272 in cinder::app::AppBasic::executeLaunch(cinder::app::AppBasic*, std::__1::shared_ptr<cinder::app::Renderer>, char const*, int, char* const*) at /Frameworks/Cinder/cinder_master/blocks/Cinder-AngelScript/samples/Basic/xcode/../../../../../include/cinder/app/AppBasic.h:178
#43	0x0000517a in main at /Frameworks/Cinder/cinder_master/blocks/Cinder-AngelScript/samples/Basic/src/BasicApp.cpp:82
#44	0x00002ee5 in start ()

As you can see it breaks after asCThreadReadWriteLock::AcquiredShared().

pthread_rwlock_rdlock(&lock);

Thanks a lot for taking the time and being so active!

Here's the as_callfunc_x86 assembler code: https://www.dropbox.com/s/h0auyevxixwple0/as_callfunc_x86.cpp

I'll try to disable all optimisations and see if it change anything. I'll let you know!