Hello,
I’m having a persistent crash on my sdl2 aplication built for ios, and I’m having trouble finding out the cause. It happens in about 1.5% of sessions.
Here is what xcode shows:
And here is one of the .crash files generated(I cannot attach the file since I’m new here):
Incident Identifier: 03BD7821-B081-451E-8A06-55BD91C659D4
Distributor ID: com.apple.AppStore
Hardware Model: iPhone13,3
Process: Baseball '97 [26282]
Path: /private/var/containers/Bundle/Application/425699E9-FAE6-41FF-A570-B2F57135925F/Baseball '97.app/Baseball '97
Identifier: com.****.****
Version: 1.1.4 (5)
AppStoreTools: 16E137
AppVariant: 1:iPhone13,3:16
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition: com.****.**** [1982]
Date/Time: 2025-05-07 00:12:09.9261 -0400
Launch Time: 2025-05-06 00:12:17.1639 -0400
OS Version: iPhone OS 17.6.1 (21G93)
Release Type: User
Baseband Version: 4.70.01
Report Version: 104
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Termination Reason: SIGNAL 6 Abort trap: 6
Terminating Process: Baseball '97 [26282]
Triggered by Thread: 0
Thread 0 name:
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x00000001e9b5c2ec __pthread_kill + 8 (:-1)
1 libsystem_pthread.dylib 0x00000001fd94fc0c pthread_kill + 268 (pthread.c:1721)
2 libsystem_c.dylib 0x00000001a8e5bba0 abort + 180 (abort.c:118)
3 libsystem_malloc.dylib 0x00000001b109f588 malloc_vreport + 896 (malloc_printf.c:251)
4 libsystem_malloc.dylib 0x00000001b109c430 malloc_zone_error + 104 (malloc_printf.c:319)
5 libsystem_malloc.dylib 0x00000001b10bb508 nanov2_guard_corruption_detected + 44 (nanov2_malloc.c:2425)
6 libsystem_malloc.dylib 0x00000001b10a32e4 nanov2_allocate_outlined + 404 (nanov2_malloc.c:2918)
7 CoreFoundation 0x00000001a0ecbc3c CFRunLoopRunSpecific + 452 (CFRunLoop.c:3406)
8 SDL2 0x00000001058c1424 UIKit_PumpEvents + 64 (SDL_uikitevents.m:140)
9 SDL2 0x00000001058f25b4 SDL_PumpEventsInternal + 64 (SDL_events.c:918)
10 SDL2 0x00000001058f26e4 SDL_WaitEventTimeout + 88 (SDL_events.c:1093)
11 Baseball '97 0x0000000104f7943c PM_HandleWindowsEventsLow(int) + 64 (PMAINSDL.cpp:1154)
12 Baseball '97 0x0000000104f791a8 SDL_main + 800 (PMAINSDL.cpp:728)
13 SDL2 0x000000010593e794 -[SDLUIKitDelegate postFinishLaunch] + 64 (SDL_uikitappdelegate.m:399)
14 Foundation 0x000000019fdd7818 __NSFireDelayedPerform + 372 (NSRunLoop.m:646)
15 CoreFoundation 0x00000001a0f30a2c __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 32 (CFRunLoop.c:1797)
16 CoreFoundation 0x00000001a0f306d0 __CFRunLoopDoTimer + 1004 (CFRunLoop.c:2404)
17 CoreFoundation 0x00000001a0f3022c __CFRunLoopDoTimers + 288 (CFRunLoop.c:2562)
18 CoreFoundation 0x00000001a0ecc888 __CFRunLoopRun + 1856 (CFRunLoop.c:3122)
19 CoreFoundation 0x00000001a0ecbcd8 CFRunLoopRunSpecific + 608 (CFRunLoop.c:3420)
20 GraphicsServices 0x00000001e59191a8 GSEventRunModal + 164 (GSEvent.c:2196)
21 UIKitCore 0x00000001a3505ae8 -[UIApplication _run] + 888 (UIApplication.m:3713)
22 UIKitCore 0x00000001a35b9d98 UIApplicationMain + 340 (UIApplication.m:5303)
23 SDL2 0x000000010593d8e0 SDL_UIKitRunApp + 196 (SDL_uikitappdelegate.m:69)
24 dyld 0x00000001c46a3154 start + 2356 (dyldMain.cpp:1298)
Thread 1:
0 libsystem_pthread.dylib 0x00000001fd9490c4 start_wqthread + 0 (:-1)
Thread 2:
0 libsystem_pthread.dylib 0x00000001fd9490c4 start_wqthread + 0 (:-1)
Thread 3:
0 libsystem_pthread.dylib 0x00000001fd9490c4 start_wqthread + 0 (:-1)
Thread 4 name:
Thread 4:
0 libsystem_kernel.dylib 0x00000001e9b516c8 mach_msg2_trap + 8 (:-1)
1 libsystem_kernel.dylib 0x00000001e9b54ec8 mach_msg2_internal + 80 (mach_msg.c:201)
2 libsystem_kernel.dylib 0x00000001e9b54de0 mach_msg_overwrite + 436 (mach_msg.c:0)
3 libsystem_kernel.dylib 0x00000001e9b54c20 mach_msg + 24 (mach_msg.c:323)
4 CoreFoundation 0x00000001a0eccf5c __CFRunLoopServiceMachPort + 160 (CFRunLoop.c:2624)
5 CoreFoundation 0x00000001a0ecc600 __CFRunLoopRun + 1208 (CFRunLoop.c:3007)
6 CoreFoundation 0x00000001a0ecbcd8 CFRunLoopRunSpecific + 608 (CFRunLoop.c:3420)
7 Foundation 0x000000019fdecb5c -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212 (NSRunLoop.m:373)
8 Foundation 0x000000019fdec9ac -[NSRunLoop(NSRunLoop) runUntilDate:] + 64 (NSRunLoop.m:420)
9 UIKitCore 0x00000001a351981c -[UIEventFetcher threadMain] + 420 (UIEventFetcher.m:1207)
10 Foundation 0x000000019fe03428 __NSThread__start__ + 732 (NSThread.m:991)
11 libsystem_pthread.dylib 0x00000001fd94e06c _pthread_start + 136 (pthread.c:931)
12 libsystem_pthread.dylib 0x00000001fd9490d8 thread_start + 8 (:-1)
Thread 5:
0 libsystem_pthread.dylib 0x00000001fd9490c4 start_wqthread + 0 (:-1)
Thread 6:
0 libsystem_pthread.dylib 0x00000001fd9490c4 start_wqthread + 0 (:-1)
Thread 7 name:
Thread 7:
0 libsystem_kernel.dylib 0x00000001e9b516c8 mach_msg2_trap + 8 (:-1)
1 libsystem_kernel.dylib 0x00000001e9b54ec8 mach_msg2_internal + 80 (mach_msg.c:201)
2 libsystem_kernel.dylib 0x00000001e9b54de0 mach_msg_overwrite + 436 (mach_msg.c:0)
3 libsystem_kernel.dylib 0x00000001e9b54c20 mach_msg + 24 (mach_msg.c:323)
4 CoreFoundation 0x00000001a0eccf5c __CFRunLoopServiceMachPort + 160 (CFRunLoop.c:2624)
5 CoreFoundation 0x00000001a0ecc600 __CFRunLoopRun + 1208 (CFRunLoop.c:3007)
6 CoreFoundation 0x00000001a0ecbcd8 CFRunLoopRunSpecific + 608 (CFRunLoop.c:3420)
7 SDL2 0x00000001058a9d7c audioqueue_thread + 872 (SDL_coreaudio.m:971)
8 SDL2 0x0000000105898440 SDL_RunThread + 48 (SDL_thread.c:333)
9 SDL2 0x000000010589e6dc RunThread + 12 (SDL_systhread.c:76)
10 libsystem_pthread.dylib 0x00000001fd94e06c _pthread_start + 136 (pthread.c:931)
11 libsystem_pthread.dylib 0x00000001fd9490d8 thread_start + 8 (:-1)
Thread 0 crashed with ARM Thread State (64-bit):
x0: 0x0000000000000000 x1: 0x0000000000000000 x2: 0x0000000000000000 x3: 0x0000000000000000
x4: 0x0000000000000073 x5: 0x000000000000002e x6: 0x0000000000000001 x7: 0x000000010a520028
x8: 0xb1f94ee6f0e49e00 x9: 0xb1f94ee4f165a0c0 x10: 0x000000000000000a x11: 0x0000000000000000
x12: 0x0000000000000032 x13: 0x00000000001ff800 x14: 0x00000000000007fb x15: 0x00000000a3f820fd
x16: 0x0000000000000148 x17: 0x0000000201813ec0 x18: 0x0000000000000000 x19: 0x0000000000000006
x20: 0x0000000000000103 x21: 0x0000000201813fa0 x22: 0x0000000000000003 x23: 0x000000016ae8a2e0
x24: 0x0000000000000000 x25: 0x0000000000000000 x26: 0x000000016ae8bbd9 x27: 0x0000000201813ec0
x28: 0x0000000104fe9000 fp: 0x000000016ae89c30 lr: 0x00000001fd94fc0c
sp: 0x000000016ae89c10 pc: 0x00000001e9b5c2ec cpsr: 0x40001000
esr: 0x56000080 Address size fault
Binary Images:
0x104f74000 - 0x104fe3fff Baseball '97 arm64 <284f98d1289e3e45932fa2167de3bdd2> /private/var/containers/Bundle/Application/425699E9-FAE6-41FF-A570-B2F57135925F/Baseball '97.app/Baseball '97
0x1050c4000 - 0x1050e3fff SDL2_image arm64 <9d45720cfd1a366d94e727d2aa6eeff5> /private/var/containers/Bundle/Application/425699E9-FAE6-41FF-A570-B2F57135925F/Baseball '97.app/Frameworks/SDL2_image.framework/SDL2_image
0x1051d4000 - 0x1051dffff libobjc-trampolines.dylib arm64e <be553713db163c12aaa48fd6211e48ce> /private/preboot/Cryptexes/OS/usr/lib/libobjc-trampolines.dylib
0x105708000 - 0x105813fff SDL2_ttf arm64 <1ccf5ba751c9340aa96bf9d553d22278> /private/var/containers/Bundle/Application/425699E9-FAE6-41FF-A570-B2F57135925F/Baseball '97.app/Frameworks/SDL2_ttf.framework/SDL2_ttf
0x105880000 - 0x10596bfff SDL2 arm64 <1724009b36b83f6498bd348fa6696f8f> /private/var/containers/Bundle/Application/425699E9-FAE6-41FF-A570-B2F57135925F/Baseball '97.app/Frameworks/SDL2.framework/SDL2
0x19fd25000 - 0x1a089afff Foundation arm64e <d27a6ec5943c3b0e8d158840fd2914f0> /System/Library/Frameworks/Foundation.framework/Foundation
0x1a0e79000 - 0x1a13a6fff CoreFoundation arm64e <76a3b1983c09323e83590d4978e156f5> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x1a30fb000 - 0x1a4c1cfff UIKitCore arm64e <9da0d27355063712b73de0149d74c13c> /System/Library/PrivateFrameworks/UIKitCore.framework/UIKitCore
0x1a8de6000 - 0x1a8e63ff3 libsystem_c.dylib arm64e <7135c2c8ba5836368b46a9e6226ead45> /usr/lib/system/libsystem_c.dylib
0x1b1096000 - 0x1b10cbfff libsystem_malloc.dylib arm64e <73a554d086563bd0b09692186b021f4a> /usr/lib/system/libsystem_malloc.dylib
0x1c4666000 - 0x1c46f3937 dyld arm64e <52039c944da13638bd52020a0b5fa399> /usr/lib/dyld
0x1e5918000 - 0x1e5920fff GraphicsServices arm64e <3ebbd576e7d83f69bcb5b9810ddcc90e> /System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices
0x1e9b50000 - 0x1e9b89fef libsystem_kernel.dylib arm64e <21ee5290d1193c31b948431865a67738> /usr/lib/system/libsystem_kernel.dylib
0x1fd948000 - 0x1fd954ff3 libsystem_pthread.dylib arm64e <e4a9d6dbf93b3c88bdd185671ec22e2b> /usr/lib/system/libsystem_pthread.dylib
EOF
Here is the part of my code where the crash happens:
EWindowsEvents PM_HandleWindowsEventsLow(BOOL mainLoop)
{
// If we're in the main loop, but the game isn't running (i.e.; the game isn't
// active and SCUMMVAR_always_run_game isn't true), then use GetMessage() instead of
// PeekMessage().
SDL_Event event;
bool atLeastOneEvent = false;
while (SDL_PollEvent(&event)) {
atLeastOneEvent = true;
switch (event.type) {
... continues with cases
I’ll deeply apreciate any guidance 