调用 SDL_SetVideoMode 时出现分段错误
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【中文标题】调用 SDL_SetVideoMode 时出现分段错误【英文标题】：Segmentation fault when calling SDL_SetVideoMode 【发布时间】：2013-12-08 17:41:08 【问题描述】：我在确定这里出了什么问题时遇到了问题。
我是一个小组的一员，我们正在使用 SDL 制作图形。当我运行我们的 test_SDL.cc 程序时（只是为了查看所有设置是否正确），我是唯一遇到分段错误的人。
以下是相关代码：
int main(int argc, char** arg)
// Initializing
if(-1 == SDL_Init(SDL_INIT_EVERYTHING))
return 1;
SDL_Surface* screennullptr;
SDL_Surface* hellonullptr;
screen = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE);
...
当 SDL_SetVideoMode(...) 被执行时，我得到了分段错误。有什么线索吗？
我在 Mac OS Mavericks 上运行，并使用终端进行编译
Pingul % gcc-mp-4.8 -lstdc++ -std=c++11 -Wall -Wpedantic `sdl-config --cflags --libs` test_SDL.cc
如果我的团队中的所有其他人都使用 Ubuntu 可以有所作为。感谢大家的帮助！
编辑： 崩溃报告 处理：a.out [918] 路径：/Users/USER/Documents/*/a.out 标识符：a.out 版本：0 代码类型：X86-64（本机） 父进程：zsh [297] 责任人：终端[155] 用户 ID：501
Date/Time: 2013-12-08 21:30:32.860 +0100
OS Version: Mac OS X 10.9 (13A603)
Report Version: 11
Anonymous UUID: EF22B2C8-6B58-F80F-184F-61D6ECE0B474
Crashed Thread: 1
Exception Type: EXC_CRASH (SIGSEGV)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Thread 0:: Dispatch queue: com.apple.main-thread
0 libSDL-1.2.0.dylib 0x000000010d59c3a9 -[SDL_QuartzWindow display] + 33
1 com.apple.AppKit 0x00007fff9460a681 __67-[NSWindow _updateSettingsSendingScreenChangeNotificationIfNeeded:]_block_invoke + 237
2 com.apple.AppKit 0x00007fff9460a548 NSPerformWithScreenUpdatesDisabled + 65
3 com.apple.AppKit 0x00007fff9460a4f7 -[NSWindow _updateSettingsSendingScreenChangeNotificationIfNeeded:] + 197
4 com.apple.AppKit 0x00007fff946027e1 -[NSWindow _setFrame:updateBorderViewSize:] + 914
5 com.apple.AppKit 0x00007fff94601d5e -[NSWindow _oldPlaceWindow:] + 652
6 com.apple.AppKit 0x00007fff9460118c -[NSWindow _setFrameCommon:display:stashSize:] + 1633
7 com.apple.AppKit 0x00007fff946155bc -[NSWindow setFrameOrigin:] + 369
8 com.apple.AppKit 0x00007fff9483d561 -[NSWindow center] + 278
9 libSDL-1.2.0.dylib 0x000000010d59a386 QZ_SetVideoMode + 1652
10 libSDL-1.2.0.dylib 0x000000010d5915a9 SDL_SetVideoMode + 906
11 a.out 0x000000010d46c7d4 SDL_main + 203
12 a.out 0x000000010d46c0bb -[SDLMain applicationDidFinishLaunching:] + 49
13 com.apple.CoreFoundation 0x00007fff935c7fcc __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
14 com.apple.CoreFoundation 0x00007fff934bbc5d _CFXNotificationPost + 2893
15 com.apple.Foundation 0x00007fff9419d4aa -[NSNotificationCenter postNotificationName:object:userInfo:] + 68
16 com.apple.AppKit 0x00007fff944e7b79 -[NSApplication _postDidFinishNotification] + 289
17 com.apple.AppKit 0x00007fff944e78ac -[NSApplication _sendFinishLaunchingNotification] + 195
18 com.apple.AppKit 0x00007fff944e4796 -[NSApplication(NSAppleEventHandling) _handleAEOpenEvent:] + 570
19 com.apple.AppKit 0x00007fff944e41eb -[NSApplication(NSAppleEventHandling) _handleCoreEvent:withReplyEvent:] + 242
20 com.apple.Foundation 0x00007fff941bbeaa -[NSAppleEventManager dispatchRawAppleEvent:withRawReply:handlerRefCon:] + 294
21 com.apple.Foundation 0x00007fff941bbd1d _NSAppleEventManagerGenericHandler + 106
22 com.apple.AE 0x00007fff8de11e1f aeDispatchAppleEvent(AEDesc const*, AEDesc*, unsigned int, unsigned char*) + 381
23 com.apple.AE 0x00007fff8de11c32 dispatchEventAndSendReply(AEDesc const*, AEDesc*) + 31
24 com.apple.AE 0x00007fff8de11b36 aeProcessAppleEvent + 315
25 com.apple.HIToolbox 0x00007fff8e0a55f1 AEProcessAppleEvent + 56
26 com.apple.AppKit 0x00007fff944e00f6 _DPSNextEvent + 1026
27 com.apple.AppKit 0x00007fff944df8db -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122
28 com.apple.AppKit 0x00007fff944d39cc -[NSApplication run] + 553
29 a.out 0x000000010d46c6df main + 1305
30 libdyld.dylib 0x00007fff936a05fd start + 1
Thread 1 Crashed:
0 libsystem_kernel.dylib 0x00007fff8a4c4e6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff93697f08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff9369afb9 start_wqthread + 13
Thread 2:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x00007fff8a4c5662 kevent64 + 10
1 libdispatch.dylib 0x00007fff8e52343d _dispatch_mgr_invoke + 239
2 libdispatch.dylib 0x00007fff8e523152 _dispatch_mgr_thread + 52
Thread 3:
0 libsystem_kernel.dylib 0x00007fff8a4c4e6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff93697f08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff9369afb9 start_wqthread + 13
Thread 4:
0 libsystem_kernel.dylib 0x00007fff8a4c4e6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff93697f08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff9369afb9 start_wqthread + 13
Thread 5:
0 libsystem_kernel.dylib 0x00007fff8a4c4e6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff93697f08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff9369afb9 start_wqthread + 13
Thread 6:
0 libsystem_kernel.dylib 0x00007fff8a4c4e6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff93697f08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff9369afb9 start_wqthread + 13
Thread 1 crashed with X86 Thread State (64-bit):
rax: 0x0000000002000170 rbx: 0x000000010e081000 rcx: 0x000000010e080f28 rdx: 0x0000000000000000
rdi: 0x0000000000000004 rsi: 0x0000000000000000 rbp: 0x000000010e080f50 rsp: 0x000000010e080f28
r8: 0x00007fff922df8d7 r9: 0x0000000000000164 r10: 0x0000000000000000 r11: 0x0000000000000246
r12: 0x0000000000000000 r13: 0x0000000000000000 r14: 0x0000000000070001 r15: 0x0000000000001003
rip: 0x00007fff8a4c4e6a rfl: 0x0000000000000246 cr2: 0x000000010f352000
Logical CPU: 0
Error Code: 0x02000170
Trap Number: 133
还有
VM Region Summary:
ReadOnly portion of Libraries: Total=155.7M resident=54.7M(35%) swapped_out_or_unallocated=101.0M(65%)
Writable regions: Total=71.8M written=2836K(4%) resident=3764K(5%) swapped_out=0K(0%) unallocated=68.1M( 95%)
REGION TYPE VIRTUAL
=========== =======
CG image 4K
CG shared images 212K
Dispatch continuations 8192K
Kernel Alloc Once 8K
MALLOC 36.6M
MALLOC (admin) 32K
Memory Tag 242 12K
STACK GUARD 56.0M
Stack 10.6M
VM_ALLOCATE 16.3M
__DATA 19.3M
__IMAGE 528K
__LINKEDIT 66.1M
__TEXT 89.6M
__UNICODE 544K
mapped file 28.2M
shared memory 4K
=========== =======
TOTAL 332.2M
Model: MacBookAir4,1, BootROM MBA41.0077.B0F, 2 processors, Intel Core i5, 1.6 GHz, 4 GB, SMC 1.74f4
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 384 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54333235533642465238432D48392020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54333235533642465238432D48392020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xE9), Broadcom BCM43xx 1.0 (5.106.98.100 .22)
Bluetooth: Version 4.2.0f6 12982, 3 services, 23 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD TS128C, 121,33 GB
USB Device: FaceTime Camera (Built-in)
USB Device: Hub
USB Device: Apple Internal Keyboard / Trackpad
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: Hub
Thunderbolt Bus: MacBook Air, Apple Inc., 8.1
我希望这是相关信息。请告诉我我是否也在格式化这个奇怪的东西。
【问题讨论】：
您/您的小组成员使用什么版本的 sdl？ @itwasntpete 我们使用的是 1.2.15。根据您的建议，我尝试将 32 更改为 24，并查看所有可用选项。唯一有效的是 SDL_FULLSCREEN，所有其他也导致了分段错误。你知道为什么吗？如果不是，我将使用我所拥有的，但否则也会很有趣:) 你试过SDL_GetVideoInfo() 看看什么是“可能”最好的吗？另外，请发布错误的痕迹。 在跟踪中看到的 SDL_main 仍然被调用。你在某处未定义的 sdl main 吗？undef main 代码中的某处？或尝试将您的主要内容设为 SDL_main。喜欢看here
我不知道，抱歉。你试过编译他的例子吗？还尝试使用 sdl 2 进行编译。查看跟踪日志libSDL-1.2.0，您的 sdl 版本似乎是 1.2.0。
【参考方案1】：
修复每像素位数并不是一个好主意。也不是每个 Mac-OS 都支持 SDL 上的 32 位。尝试一些其他值。 0 用于自动分配，通常不在 Mac 上运行。我认为 24 应该这样做。
screen = SDL_SetVideoMode(640, 480, 24, SDL_SWSURFACE);
您也可以使用SDL_GetVideoInfo(); 来确定您应该使用哪种模式。
【讨论】：
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