Apple LLVM 6.0 Error Clang 254

Question

Running Xcode 6.1 on Mavericks, is this an xcode issue? or something I did

Sorry, I know posting these errors must get annoying, I tried googling around but couldn't find a solution that works

This would happen whether I was running a unmodified template xcode file or something that I tried to code myself. :(

Thanks, Joe

CompileC /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/Objects-normal/x86_64/main.o pac/main.m normal x86_64 objective-c com.apple.compilers.llvm.clang.1_0.compiler
cd /Users/joe/Desktop/pac
export LANG=en_US.US-ASCII
export 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 x86_64 -fmessage-length=0 -fdiagnostics-show-note-include-stack -fmacro-backtrace-limit=0 -std=gnu99 -fobjc-arc -fmodules -fmodules-cache-path=/Users/joe/Library/Developer/Xcode/DerivedData/ModuleCache -fmodules-prune-interval=86400 -fmodules-prune-after=345600 -Wnon-modular-include-in-framework-module -Werror=non-modular-include-in-framework-module -Wno-trigraphs -fpascal-strings -O0 -Wno-missing-field-initializers -Wno-missing-prototypes -Werror=return-type -Wunreachable-code -Wno-implicit-atomic-properties -Werror=deprecated-objc-isa-usage -Werror=objc-root-class -Wno-receiver-is-weak -Wno-arc-repeated-use-of-weak -Wduplicate-method-match -Wno-missing-braces -Wparentheses -Wswitch -Wunused-function -Wno-unused-label -Wno-unused-parameter -Wunused-variable -Wunused-value -Wempty-body -Wconditional-uninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wconstant-conversion -Wint-conversion -Wbool-conversion -Wenum-conversion -Wshorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-selector -Wno-strict-selector-match -Wundeclared-selector -Wno-deprecated-implementations -DDEBUG=1 -DNS_BLOCK_ASSERTIONS=1 -DOBJC_OLD_DISPATCH_PROTOTYPES=0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator8.1.sdk -fexceptions -fasm-blocks -fstrict-aliasing -Wprotocol -Wdeprecated-declarations -g -Wno-sign-conversion -fobjc-abi-version=2 -fobjc-legacy-dispatch -mios-simulator-version-min=8.1 -iquote /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/pac-generated-files.hmap -I/Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/pac-own-target-headers.hmap -I/Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/pac-all-target-headers.hmap -iquote /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/pac-project-headers.hmap -I/Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Products/Debug-iphonesimulator/include -I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include -I/Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/DerivedSources/x86_64 -I/Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/DerivedSources -F/Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Products/Debug-iphonesimulator -F/Users/joe/Desktop/pac/parse-library-1 -MMD -MT dependencies -MF /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/Objects-normal/x86_64/main.d --serialize-diagnostics /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/Objects-normal/x86_64/main.dia -c /Users/joe/Desktop/pac/pac/main.m -o /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/Objects-normal/x86_64/main.o

Stack dump: 0. Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -cc1 -triple x86_64-apple-ios8.1.0 -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage -Werror=implicit-function-declaration -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name main.m -mrelocation-model pic -pic-level 2 -mdisable-fp-elim -masm-verbose -munwind-tables -target-cpu core2 -target-linker-version 241.9 -gdwarf-2 -coverage-file /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/Objects-normal/x86_64/main.o -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0 -dependency-file /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/Objects-normal/x86_64/main.d -MT dependencies -isysr oot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator8.1.sdk -iquote /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/pac-generated-files.hmap -iquote /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/pac-project-headers.hmap -D DEBUG=1 -D NS_BLOCK_ASSERTIONS=1 -D OBJC_OLD_DISPATCH_PROTOTYPES=0 -I /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/pac-own-target-headers.hmap -I /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/pac-all-target-headers.hmap -I /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Products/Debug-iphonesimu lator/include -I /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include -I /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/DerivedSources/x86_64 -I /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/DerivedSources -F/Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Products/Debug-iphonesimulator -F/Users/joe/Desktop/pac/parse-library-1 -O0 -Wnon-modular-include-in-framework-module -Werror=non-modular-include-in-framework-module -Wno-trigraphs -Wno-missing-field-initializers -Wno-missing-prototypes -Werror=return-type -Wunreachable-code -Wno-implicit-atomic-properties -Werror=deprecated-objc-isa-usage -Werror=objc-root-class -Wno-receiver-is-weak -Wno-arc-repeated-use-of-weak -Wduplicate-method-match -Wno-missing-braces -Wparentheses -Wswitch -Wunused-function -Wno-unused-label -Wno-unused-parameter -Wunused-variable -Wunused-value -Wempty-body -Wconditional-uninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wconstant-conversion -Wint-conversion -Wbool-conversion -Wenum-conversion -Wshorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-selector -Wno-strict-selector-match -Wundeclared-selector -Wno-deprecated-implementations -Wprotocol -Wdeprecated-declarations -Wno-sign-conversion -std=gnu99 -fdebug-compilation-dir /Users/joe/Desktop/pac -ferror-limit 19 -fmacro-backtrace-limit 0 -fmessage-length 0 -stack-protector 1 -mstackrealign -fblocks -fmodules -fmodules-cache-path=/Users/joe/Library/Developer/Xcode/DerivedData/ModuleCache -fmodules-prune-interval=86400 -fmodules-prune-after=345600 -fobjc-runtime=ios-8.1.0 -fencode-extended-block-signature -fobjc-arc -fobjc-exceptions -fexceptions -fpascal-strings -fdiagnostics-show-option -fdiagnostics-show-note-include-stack -fasm-block s -vectorize-slp -serialize-diagnostic-file /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/Objects-normal/x86_64/main.dia -o /Users/joe/Library/Developer/Xcode/DerivedData/pac-dmdcvwzinfweyzgefcqbhztzjxfl/Build/Intermediates/pac.build/Debug-iphonesimulator/pac.build/Objects-normal/x86_64/main.o -x objective-c /Users/joe/Desktop/pac/pac/main.m 1. parser at end of file 2. Code generation 3. Running pass 'Function Pass Manager' on module '/Users/joe/Desktop/pac/pac/main.m'. 4. Running pass 'X86 DAG->DAG Instruction Selection' on function '@main' clang: error: unable to execute command: Segmentation fault: 11 clang: error: clang frontend command failed due to signal (use -v to see invocation) Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn) Target: x86_64-apple-darwin13.0.0 Thread model: posix clang: note: diagnostic msg: PLEASE submit a bug report to http://developer.apple.com/bugreporter/ and include the crash backtrace, preprocessed source, and associated run script. clang: note: diagnostic msg:

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PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang: note: diagnostic msg: /var/folders/3r/jfx826nx1yvd_xxd03fxdk580000gn/T/main-df87ab.m clang: note: diagnostic msg: /var/folders/3r/jfx826nx1yvd_xxd03fxdk580000gn/T/main-df87ab.cache clang: note: diagnostic msg: /var/folders/3r/jfx826nx1yvd_xxd03fxdk580000gn/T/main-df87ab.sh clang: note: diagnostic msg:

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

Answer 1

You can follow this example to solve this issue. It worked for me. You have to delete the derived data and the restart xCode. It always work with Apple LLVM 6.0 Error.