the iOS project which unity export crashed when append a string which length equal or more than 64

it will not crash in a debug mode, only crash when you archive a .ipa and run it in your device.

 

the unity version is 2018.2.10f1, Xcode version is 10.2 (10E125)

 

I am so curious what bug is this so I tried your test and it does not crash on my end.

Could you share a stack trace when it crashes?

 

Thanks to reply.
this is the crash log

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Incident Identifier: 6112620D-21E8-4114-B7CE-E3DD613B49DE
CrashReporter Key: f41eb0fd95b17fd5838c971eb2a8f62e52c9593b
Hardware Model: iPhone8,1
Process: testmakeup [3935]
Path: /private/var/containers/Bundle/Application/B7BDD24A-9033-4A12-8886-CA98C100A29D/testmakeup.app/testmakeup
Identifier: com.kivisense.testmakeup
Version: 1 (2.0)
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition: com.kivisense.testmakeup [1635]


Date/Time: 2019-04-16 10:20:51.0668 +0800
Launch Time: 2019-04-16 10:20:50.2085 +0800
OS Version: iPhone OS 12.2 (16E227)
Baseband Version: 5.55.00
Report Version: 104

Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Triggered by Thread: 0

Application Specific Information:
abort() called

Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x00000001a2eca0dc __pthread_kill + 8
1 libsystem_pthread.dylib 0x00000001a2f43094 pthread_kill$VARIANT$mp + 380
2 libsystem_c.dylib 0x00000001a2e23ea8 abort + 140
3 libsystem_malloc.dylib 0x00000001a2f1d780 _malloc_put + 0
4 libsystem_malloc.dylib 0x00000001a2f1d938 malloc_report + 60
5 libsystem_malloc.dylib 0x00000001a2f105e8 free + 532
6 libc++.1.dylib 0x00000001a24d8818 std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__grow_by_and_replace+ 260120 (unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, char const*) + 248
7 libc++.1.dylib 0x00000001a24d8668 std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::append+ 259688 (char const*, unsigned long) + 108
8 testmakeup 0x00000001041740b0 appendTest() + 32944 (main.mm:45)
9 testmakeup 0x0000000104173fa0 main + 32672 (main.mm:24)
10 libdyld.dylib 0x00000001a2d7e8e0 start + 4

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i had uploaded the project to google drive https://drive.google.com/open?id=1XjY8X8_Zo7EpAHy6yxrf-DQFguup6AJZ

 

ok, i solved the question, you must take the appendTest function after the UnityInitRuntime, although it run well but i am so confused.