在此范围错误中未声明autoreleasepool错误 [英] autoreleasepool was not declared in this scope error
问题描述
我的项目在XCode 4.2中.该项目将编译为常规调试版本.
My project is in XCode 4.2. This project compiles for a regular debug build.
但是当我将构建类型更改为配置文件时(我想配置内存使用情况)，我从这个Objective-C ++ C ++类中得到了错误:
But when I change the build type to profile (I want to profile memory usage), I get the error from this objective-c++ c++ class:
/Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm:53:错误:流浪'@' 在程序/Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm中:在成员中 函数'void FilterAudioMixer :: WriteToBuffer(SInt16 *，int)': /Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm:53:错误: 未在此范围内声明"autoreleasepool" /Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm:53:错误:预期
;' before '{' token /Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm:147: error: expected}'在输入末尾
/Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm:53: error: stray '@' in program /Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm: In member function 'void FilterAudioMixer::WriteToBuffer(SInt16*, int)': /Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm:53: error: 'autoreleasepool' was not declared in this scope /Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm:53: error: expected
;' before '{' token /Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm:147: error: expected}' at end of input
下面的@autoreleasepool行是第53行:
the @autoreleasepool line below is line 53:
void FilterAudioMixer::WriteToBuffer(SInt16* buffer, int nb_samps)
{
@autoreleasepool {
//do a per element lock (todo)
pthread_mutex_lock(&playlist_lock);
FilterSound *snd;
size_t count = playlist.size();
for (size_t i = 0; i < count; i++) {
snd = playlist[i];
[snd writeToBuffer:buffer samples:nb_samps];
}
pthread_mutex_unlock(&playlist_lock);
if (m_mute) {
memset(buffer, 0, sizeof(SInt16) * 2 * nb_samps);
}
}
}
@autoreleasepool似乎仅在配置文件下给我带来问题，为什么?
It would appear that @autoreleasepool is giving me problems only under profile, why is that?
为完整起见，这是构建结果窗口中的编译行:
For completeness, here is the compile line from the build result window:
CompileC /Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Objects-normal/armv7/FilterAudioMixer.o FilterAudioMixer.mm普通Armv7物镜-C ++ com.apple.compilers.llvmgcc42 cd/卷/机器/scm/语音 setenv LANG en_US.US-ASCII setenv PATH"/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2 -x Objective-c ++ -arch armv7 -fmessage-length = 0-管道-Wno-trigraphs -fpascal-strings -Os -Wreturn-type -Wunused-variables -isysroot/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS .platform/Developer/SDKs/iPhoneOS5.0.sdk -gdwarf-2 -fvisibility =隐藏-fvisibility-inlines-hidden -mthumb -miphoneos-version-min = 4.0 -iquote/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer. /Release-iphoneos/Voicer.build/Voicer-generation-files.hmap -I/用户/机器/库/开发人员/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Voicer-own-target-headers.hmap -I/用户/机器/库/开发人员/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Voicer-all-target-headers.hmap -iquote/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Voicer-project-headers.hmap -我引用. -iquotePictures -iquoteCocoaSoundCloudUI -iquoteCocoaSoundCloudAPI -iquoteOHAttributedLabel -iquoteOAuth2Client -iquoteVoicer.xcworkspace -iquoteClasses -iquotehelp -iquoteJSONKit -iquoteShaders -iquoteaudio -iquotePictures/extremeprogrammingpics -iquotePictures/2010 -iquotePictures/网络摄像头-iquotePictures/2011 -iquotePictures/GUI -iquoteCocoaSoundCloudUI/SoundCloud.bundle -iquoteCocoaSoundCloudUI/Sources -iquoteCocoaSoundCloudAPI/Sources"-iquoteOHAttributedLabel/AttributedLabel示例" -iquoteOHAttributedLabel/OHAttributedLabel -iquoteOAuth2Client/Sources -iquoteVoicer.xcworkspace/xcuserdata -iquoteJSONKit/JSONKit -iquoteaudio/CAExtras -iquotePictures/2010/06 -iquotePictures/2010/07 -iquotePictures/2010/08/08 -i /10 -iquotePictures/2011/11 -iquotePictures/2011/09 -iquotePictures/2011/07 -iquotePictures/2011/08 -iquotePictures/gui/rec -iquotePictures/gui/buttonentity -iquoteCocoaSoundCloudUI/Sources/CocoaAdditions -iquote -iquoteCocoaSoundCloudAPI/Sources/SoundCloudAPI"-iquoteOHAttributedLabel/AttributedLabel示例/类" -iquoteOAuth2Client/Sources/OAuth2Client -iquoteVoicer.xcworkspace/xcuserdata/mchinen.xcuserdatad -iquotePictures/2010/06/25 -iquotePictures/2010/07/22 -iquotePictures/2010/07/18 -iquotePictures/2010/08/25 -iquotePictures /2010/08/29 -iquotePictures/2010/08/07 -iquotePictures/2010/08/03 -iquotePictures/2011/12/16 -iquotePictures/2011/12/14 -iquotePictures/2011/12/17 -iquotePictures/2011 /12/15 -iquotePictures/2011/10/26 -iquotePictures/2011/10/30 -iquotePictures/2011/10/21 -iquotePictures/2011/10/22 -iquotePictures/2011/10/13 -iquotePictures/2011/11 /18 -iquotePictures/2011/11/19 -iquotePictures/2011/09/26 -iquotePictures/2011/09/25 -iquotePictures/2011/09/01 -iquotePictures/2011/09/21 -iquotePictures/2011/09/07 -iquotePictures/2011/09/13 -iquotePictures/2011/09/19 -iquotePictures/2011/07/17 -iquotePictures/2011/08/30 -iquotePictures/2011/08/23 -iquotePictures/2011/08/29 -iquoteVoicer .xcworkspace/xcuserdata/mchinen.xcuserdatad/xcdebugger -I/Users/mchinen/Library/Developer/Xcode/DerivedDat a/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/产品/Release-iphoneos/include -I/用户/机器/库/开发人员/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/DerivedSources/armv7 -I/用户/机器/库/开发人员/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/DerivedSources -F/用户/机器/库/开发人员/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/构建/产品/发行iphoneos -DNS_BLOCK_ASSERTIONS = 1-包括/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/PrecompiledHeaders/Filter_Prefix-hbhtwvzcunnlquaijtkchxChrmCrc. -c/卷/mchinen/scm/Voicer/FilterAudioMixer.mm -o/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer. -normal/armv7/FilterAudioMixer.o
CompileC /Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Objects-normal/armv7/FilterAudioMixer.o FilterAudioMixer.mm normal armv7 objective-c++ com.apple.compilers.llvmgcc42 cd /Volumes/mchinen/scm/Voicer setenv LANG en_US.US-ASCII setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2 -x objective-c++ -arch armv7 -fmessage-length=0 -pipe -Wno-trigraphs -fpascal-strings -Os -Wreturn-type -Wunused-variable -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk -gdwarf-2 -fvisibility=hidden -fvisibility-inlines-hidden -mthumb -miphoneos-version-min=4.0 -iquote /Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Voicer-generated-files.hmap -I/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Voicer-own-target-headers.hmap -I/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Voicer-all-target-headers.hmap -iquote /Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Voicer-project-headers.hmap -iquote. -iquotePictures -iquoteCocoaSoundCloudUI -iquoteCocoaSoundCloudAPI -iquoteOHAttributedLabel -iquoteOAuth2Client -iquoteVoicer.xcworkspace -iquoteClasses -iquotehelp -iquoteJSONKit -iquoteShaders -iquoteaudio -iquotePictures/extremeprogrammingpics -iquotePictures/2010 -iquotePictures/Webcam -iquotePictures/2011 -iquotePictures/gui -iquoteCocoaSoundCloudUI/SoundCloud.bundle -iquoteCocoaSoundCloudUI/Sources -iquoteCocoaSoundCloudAPI/Sources "-iquoteOHAttributedLabel/AttributedLabel Example" -iquoteOHAttributedLabel/OHAttributedLabel -iquoteOAuth2Client/Sources -iquoteVoicer.xcworkspace/xcuserdata -iquoteJSONKit/JSONKit -iquoteaudio/CAExtras -iquotePictures/2010/06 -iquotePictures/2010/07 -iquotePictures/2010/08 -iquotePictures/2011/12 -iquotePictures/2011/10 -iquotePictures/2011/11 -iquotePictures/2011/09 -iquotePictures/2011/07 -iquotePictures/2011/08 -iquotePictures/gui/rec -iquotePictures/gui/buttonentity -iquoteCocoaSoundCloudUI/Sources/CocoaAdditions -iquoteCocoaSoundCloudUI/Sources/SoundCloudUI -iquoteCocoaSoundCloudAPI/Sources/SoundCloudAPI "-iquoteOHAttributedLabel/AttributedLabel Example/Classes" -iquoteOAuth2Client/Sources/OAuth2Client -iquoteVoicer.xcworkspace/xcuserdata/mchinen.xcuserdatad -iquotePictures/2010/06/25 -iquotePictures/2010/07/22 -iquotePictures/2010/07/18 -iquotePictures/2010/08/25 -iquotePictures/2010/08/29 -iquotePictures/2010/08/07 -iquotePictures/2010/08/03 -iquotePictures/2011/12/16 -iquotePictures/2011/12/14 -iquotePictures/2011/12/17 -iquotePictures/2011/12/15 -iquotePictures/2011/10/26 -iquotePictures/2011/10/30 -iquotePictures/2011/10/21 -iquotePictures/2011/10/22 -iquotePictures/2011/10/13 -iquotePictures/2011/11/18 -iquotePictures/2011/11/19 -iquotePictures/2011/09/26 -iquotePictures/2011/09/25 -iquotePictures/2011/09/01 -iquotePictures/2011/09/21 -iquotePictures/2011/09/07 -iquotePictures/2011/09/13 -iquotePictures/2011/09/19 -iquotePictures/2011/07/17 -iquotePictures/2011/08/30 -iquotePictures/2011/08/23 -iquotePictures/2011/08/29 -iquoteVoicer.xcworkspace/xcuserdata/mchinen.xcuserdatad/xcdebugger -I/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Products/Release-iphoneos/include -I/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/DerivedSources/armv7 -I/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/DerivedSources -F/Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Products/Release-iphoneos -DNS_BLOCK_ASSERTIONS=1 -include /Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/PrecompiledHeaders/Filter_Prefix-hbhtwvzcunnlquaijtkwxcnrmocg/Filter_Prefix.pch -c /Volumes/mchinen/scm/Voicer/FilterAudioMixer.mm -o /Users/mchinen/Library/Developer/Xcode/DerivedData/Voicer-aebonlzraugcbqarecvubzkhxlfr/Build/Intermediates/Voicer.build/Release-iphoneos/Voicer.build/Objects-normal/armv7/FilterAudioMixer.o
推荐答案
该构建日志的重要部分是:
The important part of that build log is:
gcc-4.2
gcc-4.2
构建设置中的某些问题导致您使用旧的GCC 4.2编译器，该编译器不支持@autoreleasepool. (此答案中的更多解释.)
Something in your build settings is causing you to use the old GCC 4.2 compiler, which doesn't support @autoreleasepool. (More explanation in this answer.)
在您的方案中，检查正在使用的构建配置配置文件".然后，检查项目中的设置以及该构建配置的目标.
In your scheme, check what build configuration "Profile" is using. Then, check the settings in your project and target for that build configuration.
这篇关于在此范围错误中未声明autoreleasepool错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
