Errore LLVM 3.1 Apple compilatore

Question

Appena aggiornato Xcode a 4.3 e ora non riesco a creare la mia app. Ho riscontrato questo errore:

Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 254 

Chiunque abbia questo problema? Probabilmente è solo un'impostazione di compilation ma non sono sicuro di dove cercare.

Ovviamente, l'errore include l'intero dump dello stack, ma non l'ho incluso per brevità. Spero che qualcuno sappia cos'è "codice di uscita 254". Ho provato a cercarlo ma non ho trovato nulla.

Ecco l'intera produzione:

CompileC /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Objects-normal/i386/SCheckBox.o iDB/SCheckBox.m normal i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler 
    cd "/Users/aaron/Dropbox/XCode Projects/iDB" 
    setenv LANG en_US.US-ASCII 
    setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" 
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -x objective-c -arch i386 -fmessage-length=0 -std=gnu99 -fobjc-arc -Wno-trigraphs -fpascal-strings -O0 -Werror -Wno-missing-field-initializers -Wmissing-prototypes -Wreturn-type -Wno-implicit-atomic-properties -Wformat -Wno-missing-braces -Wparentheses -Wswitch -Wunused-function -Wunused-label -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-uninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-sign-compare -Wno-shorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-selector -Wno-strict-selector-match -Wno-undeclared-selector -Wno-deprecated-implementations -DDEBUG=1 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -fexceptions -fasm-blocks -Wprotocol -Wdeprecated-declarations -mmacosx-version-min=10.6 -g -Wno-conversion -Wno-sign-conversion -fobjc-abi-version=2 -fobjc-legacy-dispatch "-DIBOutlet=__attribute__((iboutlet))" "-DIBOutletCollection(ClassName)=__attribute__((iboutletcollection(ClassName)))" "-DIBAction=void)__attribute__((ibaction)" -D__IPHONE_OS_VERSION_MIN_REQUIRED=50000 -iquote /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Flexile-generated-files.hmap -I/Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Flexile-own-target-headers.hmap -I/Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Flexile-all-target-headers.hmap -iquote /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Flexile-project-headers.hmap -I/Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Products/Debug-iphonesimulator/include -I/Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/DerivedSources/i386 -I/Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/DerivedSources -F/Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Products/Debug-iphonesimulator -include /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/PrecompiledHeaders/iDB-Prefix-aojkwzmrifipbudgsdryqwbhphsf/iDB-Prefix.pch -MMD -MT dependencies -MF /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Objects-normal/i386/SCheckBox.d --serialize-diagnostics /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Objects-normal/i386/SCheckBox.dia -c "/Users/aaron/Dropbox/XCode Projects/iDB/iDB/SCheckBox.m" -o /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Objects-normal/i386/SCheckBox.o 

0 clang    0x000000010a5c15a2 _ZL15PrintStackTracePv + 34 
1 clang    0x000000010a5c1a29 _ZL13SignalHandleri + 553 
2 libsystem_c.dylib 0x00007fff94b6dcfa _sigtramp + 26 
3 libsystem_c.dylib 0x00007fff6929a1b0 _sigtramp + 18446744072978875600 
4 clang    0x0000000109ef3798 _ZL20findRetainCycleOwnerPN5clang4ExprERN12_GLOBAL__N_116RetainCycleOwnerE + 312 
5 clang    0x0000000109ef35af clang::Sema::checkRetainCycles(clang::ObjCMessageExpr*) + 303 
6 clang    0x00000001097efaef clang::Sema::BuildInstanceMessage(clang::Expr*, clang::QualType, clang::SourceLocation, clang::Selector, clang::ObjCMethodDecl*, clang::SourceLocation, llvm::ArrayRef<clang::SourceLocation>, clang::SourceLocation, clang::ASTMultiPtr<clang::Expr*>) + 6479 
7 clang    0x00000001097ee18a clang::Sema::ActOnInstanceMessage(clang::Scope*, clang::Expr*, clang::Selector, clang::SourceLocation, llvm::ArrayRef<clang::SourceLocation>, clang::SourceLocation, clang::ASTMultiPtr<clang::Expr*>) + 138 
8 clang    0x00000001097ee04b clang::Parser::ParseObjCMessageExpressionBody(clang::SourceLocation, clang::SourceLocation, clang::OpaquePtr<clang::QualType>, clang::Expr*) + 2091 
9 clang    0x00000001097ed7f4 clang::Parser::ParseObjCMessageExpression() + 852 
10 clang    0x0000000109765597 clang::Parser::ParseCastExpression(bool, bool, bool&, bool) + 6807 
11 clang    0x0000000109763ab2 clang::Parser::ParseAssignmentExpression() + 114 
12 clang    0x0000000109763a21 clang::Parser::ParseExpression() + 17 
13 clang    0x00000001097b8efe clang::Parser::ParseExprStatement(clang::ParsedAttributes&) + 46 
14 clang    0x00000001097634bc clang::Parser::ParseStatementOrDeclaration(clang::ASTOwningVector<clang::Stmt*, 32u>&, bool) + 1564 
15 clang    0x00000001097627d9 clang::Parser::ParseCompoundStatementBody(bool) + 409 
16 clang    0x0000000109763242 clang::Parser::ParseStatementOrDeclaration(clang::ASTOwningVector<clang::Stmt*, 32u>&, bool) + 930 
17 clang    0x00000001097b6d0b clang::Parser::ParseIfStatement(clang::ParsedAttributes&) + 475 
18 clang    0x000000010976353c clang::Parser::ParseStatementOrDeclaration(clang::ASTOwningVector<clang::Stmt*, 32u>&, bool) + 1692 
19 clang    0x00000001097627d9 clang::Parser::ParseCompoundStatementBody(bool) + 409 
20 clang    0x0000000109edbd30 clang::Parser::ParseLexedObjCMethodDefs(clang::Parser::LexedMethod&) + 272 
21 clang    0x000000010980483e clang::Parser::ParseObjCAtEndDeclaration(clang::SourceRange) + 158 
22 clang    0x00000001097e2222 clang::Parser::ParseObjCAtDirectives() + 386 
23 clang    0x0000000109723e87 clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::Parser::ParsingDeclSpec*) + 759 
24 clang    0x0000000109723b19 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) + 249 
25 clang    0x000000010970688b clang::ParseAST(clang::Sema&, bool) + 299 
26 clang    0x00000001097053d9 clang::CodeGenAction::ExecuteAction() + 857 
27 clang    0x00000001096d793f clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 879 
28 clang    0x00000001096d65cb clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 2683 
29 clang    0x00000001096c8dce cc1_main(char const**, char const**, char const*, void*) + 5086 
30 clang    0x00000001096a35d8 main + 648 
31 clang    0x00000001096a3344 start + 52 
32 clang    0x0000000000000071 start + 18446744069256629601 
Stack dump: 
0. Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -cc1 -triple i386-apple-macosx10.6.0 -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name SCheckBox.m -pic-level 1 -mdisable-fp-elim -relaxed-aliasing -masm-verbose -target-cpu yonah -target-linker-version 128.2 -g -coverage-file /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Objects-normal/i386/SCheckBox.o -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/3.1 -dependency-file /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Objects-normal/i386/SCheckBox.d -MT dependencies -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -iquote /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Flexile-generated-files.hmap -iquote /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Flexile-project-headers.hmap -include-pch /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/PrecompiledHeaders/iDB-Prefix-aojkwzmrifipbudgsdryqwbhphsf/iDB-Prefix.pch.pth -D DEBUG=1 -D IBOutlet=__attribute__((iboutlet)) -D IBOutletCollection(ClassName)=__attribute__((iboutletcollection(ClassName))) -D IBAction=void)__attribute__((ibaction) -D __IPHONE_OS_VERSION_MIN_REQUIRED=50000 -I /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Flexile-own-target-headers.hmap -I /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Flexile-all-target-headers.hmap -I /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Products/Debug-iphonesimulator/include -I /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/DerivedSources/i386 -I /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/DerivedSources -F/Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Products/Debug-iphonesimulator -fmodule-cache-path /var/folders/1y/fbhzgfpn2ld9qxdfpgl7d_rm0000gn/T/clang-module-cache -O0 -Wno-trigraphs -Werror -Wno-missing-field-initializers -Wmissing-prototypes -Wreturn-type -Wno-implicit-atomic-properties -Wformat -Wno-missing-braces -Wparentheses -Wswitch -Wunused-function -Wunused-label -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-uninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-sign-compare -Wno-shorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-selector -Wno-strict-selector-match -Wno-undeclared-selector -Wno-deprecated-implementations -Wprotocol -Wdeprecated-declarations -Wno-conversion -Wno-sign-conversion -std=gnu99 -ferror-limit 19 -fmessage-length 0 -stack-protector 1 -fblocks -fobjc-runtime-has-arc -fobjc-runtime-has-weak -fobjc-arc -fobjc-exceptions -fexceptions -fpascal-strings -fdiagnostics-show-option -serialize-diagnostic-file /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Objects-normal/i386/SCheckBox.dia -o /Users/aaron/Library/Developer/Xcode/DerivedData/iDB-cvvkmobzsecywdherzjesrjswdng/Build/Intermediates/iDB.build/Debug-iphonesimulator/Flexile.build/Objects-normal/i386/SCheckBox.o -x objective-c /Users/aaron/Dropbox/XCode Projects/iDB/iDB/SCheckBox.m 
1. /Users/aaron/Dropbox/XCode Projects/iDB/iDB/SCheckBox.m:36:47: current parser token ';' 
2. /Users/aaron/Dropbox/XCode Projects/iDB/iDB/SCheckBox.m:27:146: in compound statement ('{}') 
3. /Users/aaron/Dropbox/XCode Projects/iDB/iDB/SCheckBox.m:29:102: in compound statement ('{}') 
clang: error: unable to execute command: Segmentation fault: 11 
clang: error: clang frontend command failed due to signal 2 (use -v to see invocation) 
clang: note: diagnostic msg: Please submit a bug report to http://developer.apple.com/bugreporter/ and include command line arguments and all diagnostic information. 
clang: note: diagnostic msg: Preprocessed source(s) and associated run script(s) are located at: 
clang: note: diagnostic msg: /var/folders/1y/fbhzgfpn2ld9qxdfpgl7d_rm0000gn/T/SCheckBox-GckJrn.mi 
clang: note: diagnostic msg: /var/folders/1y/fbhzgfpn2ld9qxdfpgl7d_rm0000gn/T/SCheckBox-GckJrn.sh 
Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 254 

UPDATE Così ho notato che la discarica si riferisce alle linee specifiche su codice in una specifica classe (SCheckBox.m). È in un metodo init. Ho controllato il metodo ma non ho trovato nulla di sbagliato in esso. Tuttavia, se commento tutto all'interno del metodo e restituisco nil, il codice viene compilato. Ho esaminato e disatteso ogni riga fino a quando non ho ricevuto l'errore. L'errore che causa il problema è questo:

[super.inputField addSubview:_checked]; 

Avevo intenzione di utilizzare 'sé' invece di 'super' (che era un errore di battitura da parte mia). Ma super ha infatti una proprietà inputField. Non è ridefinito o sovrascritto nella sottoclasse. Quindi accedere a 'super.inputField' vs 'self.inputField' dovrebbe accedere esattamente alla stessa cosa (e fatto prima di aggiornare Xcode). OK, quindi cambiare 'super' in 'sé' risolve il problema.

La mia domanda ora è: perché?

Answer 1

Hai trovato un bug del compilatore. Sembra che il rapporto di errore del compilatore indichi dove si trova il codice nel barcode, quindi la soluzione migliore è quella di giocherellare con quel codice e vedere se è possibile renderlo più facilmente digeribile.

Si potrebbe anche inviare una segnalazione di errore, ma questo non risolverà il problema in modo tempestivo.

Answer 2

Ho eseguito lo stesso messaggio di errore dopo l'aggiornamento da 4.2 a 4.3. Esaminando il dump, sono stato in grado di trovare il nome della classe e la linea che stava causando il vomito del compilatore.

Sono sicuro che la causa è diversa per tutti, ma aggiungendo la mia correzione qui.

Cambiare da

[super.tabBarController setSelectedIndex:0];

Per

[[super tabBarController] setSelectedIndex:0];

affrontato il problema per me. Pensavo però che le notazioni puntino si traducessero in parentesi. Sarebbe bello se qualcuno potesse spiegare questa correzione che non era richiesta in XCode 4.2.

Answer 3

Ho avuto lo stesso problema. In questo codice:

[super pxSeek:@"1"]; 
[super.SQL setString:[NSString stringWithFormat:@"%@ %@", @"SELECT COUNT(*) AS MYCOUNT FROM ", super.Name]]; 
[super executeSQL]; 

return [super getIntColumn:0]; 

ho bisogno di cambiare [super.SQL] per [[super-SQL], che invoca il metodo.

Answer 4

im utilizzando xcode 4.3, avere un errore come il tuo.Era un bug, ho appena riavviato il mio computer e l'errore è andato via.

Answer 5

Sono riuscito a far scattare questo problema su Xcode 4.3.2 provando a trasmettere attraverso NSLog il risultato di un'operazione sul posto (che restituisce void).

Nel mio caso, quello che stavo cercando di fare era: -

NSLog(@"result = %@", [array filterUsingPredicate:predicate]); 

Il fatto che filterUsingPredicate: è un metodo sul posto, che ritorna void sembra aver innescato questo errore di compilazione. È interessante notare che il rilevamento degli errori as-you-type di Xcode non si basa su di esso.

La modifica di questa alla versione corretta: -

NSLog(@"result = %@", [array filteredArrayUsingPredicate:predicate]); 

Funziona bene e risolve il problema!

Answer 6

ho avuto un errore di copia-incolla, ha incontrato spesso quando la scadenza è a breve :)

nel file di .m:

@implementation DetailGetter 
... stuff here.. 
@end 

di me copia-incollare un dichiarazione di interfaccia di sopra di questo, ma con altro nome,

@implementation FromOtherMFile() 
@end 

@implementation DetailGetter 
... stuff here.. 
@end 

naturalmente, se è cambiato il FromOtherMFile per DetailGetter sarà alcun errore del compilatore, ma aveva bisogno di scorrere una pagina intera in cui è l'errore, e non è evidenziato i n editore