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scan-build should transparently interpose on xcodebuild #12216

Open llvmbot opened 12 years ago

llvmbot commented 12 years ago
Bugzilla Link 11844
Version unspecified
OS MacOS X
Reporter LLVM Bugzilla Contributor
CC @asl,@FlashSheridan,@jryans,@tkremenek

Extended Description

When I run the latest (258) scan-build on code built using XCode 4.2 I get the following error:-

2012-01-24 10:19:37.498 xcodebuild[780:3803] DVTAssertions: Warning in /SourceCache/IDEXcode3ProjectSupport/IDEXcode3ProjectSupport-928/Xcode3Sources/XcodeIDE/Frameworks/DevToolsBase/pbxcore/SpecificationTypes/XCCommandLineToolSpecification.m:828 Details: Unable to get message category info for tool '/Applications/checker-258/libexec/ccc-analyzer'. Reason: i686-apple-darwin11-llvm-gcc-4.2: no input files

Object: <XCCompilerSpecificationClang: 0x4007d47e0> Method: -messageCategoryInfoForExecutablePath: Thread: <NSThread: 0x400fae3c0>{name = (null), num = 6} Please file a bug at http://bugreport.apple.com with this warning message and any useful information you can provide.

CompileC build/Appy.build/Debug-iphonesimulator/Appy.build/Objects-normal/i386/main.o Appy/main.m normal i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler cd /Users/Mo/dev/latest setenv LANG en_US.US-ASCII setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin" /Applications/checker-258/libexec/ccc-analyzer -x objective-c -arch i386 -fmessage-length=0 -fdiagnostics-print-source-range-info -fdiagnostics-show-category=id -fdiagnostics-parseable-fixits -std=gnu99 -fobjc-arc -Wno-trigraphs -fpascal-strings -O0 -Wreturn-type -Wparentheses -Wswitch -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-shorten-64-to-32 -DDEBUG -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.0.sdk -fexceptions -fasm-blocks -mmacosx-version-min=10.6 -gdwarf-2 -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/Mo/dev/latest/build/Appy.build/Debug-iphonesimulator/Appy.build/Appy-generated-files.hmap -I/Users/Mo/dev/latest/build/Appy.build/Debug-iphonesimulator/Appy.build/Appy-own-target-headers.hmap -I/Users/Mo/dev/latest/build/Appy.build/Debug-iphonesimulator/Appy.build/Appy-all-target-headers.hmap -iquote /Users/Mo/dev/latest/build/Appy.build/Debug-iphonesimulator/Appy.build/Appy-project-headers.hmap -I/Users/Mo/dev/latest/build/Debug-iphonesimulator/include -I/Users/Mo/dev/latest/build/Appy.build/Debug-iphonesimulator/Appy.build/DerivedSources/i386 -I/Users/Mo/dev/latest/build/Appy.build/Debug-iphonesimulator/Appy.build/DerivedSources -F/Users/Mo/dev/latest/build/Debug-iphonesimulator -F/Users/Mo/dev/latest -include /Users/Mo/dev/latest/Appy/Appy-Prefix.pch -MMD -MT dependencies -MF /Users/Mo/dev/latest/build/Appy.build/Debug-iphonesimulator/Appy.build/Objects-normal/i386/main.d -c /Users/Mo/dev/latest/Appy/main.m -o /Users/Mo/dev/latest/build/Appy.build/Debug-iphonesimulator/Appy.build/Objects-normal/i386/main.o cc1obj: error: unrecognized command line option "-Wno-sign-conversion" cc1obj: error: unrecognized command line option "-fdiagnostics-print-source-range-info" cc1obj: error: unrecognized command line option "-fdiagnostics-show-category=id" cc1obj: error: unrecognized command line option "-fdiagnostics-parseable-fixits" cc1obj: error: unrecognized command line option "-fobjc-arc" Command /Applications/checker-258/libexec/ccc-analyzer failed with exit code 1

BUILD FAILED

The following build commands failed: CompileC build/Appy.build/Debug-iphonesimulator/Appy.build/Objects-normal/i386/main.o Appy/main.m normal i386 objective-c com.apple.compilers.llvm.clang.1_0.compiler (1 failure) scan-build: Removing directory '/var/folders/p6/r86f0tb17tq2c5crbndb0q7m0000gn/T/scan-build-2012-01-24-1' because it contains no reports.

I can fix this using a solution listed here: http://stackoverflow.com/questions/7820011/clang-scan-build-wont-work-with-xcode-4-2-llvm-3-0-build-configuration however even when using this "hack" the results imply the scanner does not recognise ARC'd code as I have numerous false warnings about potential memory leaks.

Thanks for any help

tkremenek commented 12 years ago

Retitling to reflect the broader fix that is need, which is essentially a reimplementation of scan-build.

tkremenek commented 12 years ago

This is part of the limitation of scan-build. It doesn't know what compiler Xcode intended to use for compilation, so it just defaults to gcc (which doesn't recognize the arguments -fdiagnostics-print-source-range-info, and so forth).

Beyond the link you cited, there is no really good way to fix this in scan-build without doing REAL interposition of the build (e.g., intercept exec's of the compiler and run the analyzer on the side) instead of the poor man's interposition we are doing now by overriding the compiler used by xcodebuild. Unfortunately, there are no resources currently allocated to that effort.

You're best bet for Xcode integration (right now) is to use the set-xcode-analyzer script:

http://clang-analyzer.llvm.org/xcode.html

and run the analyzer directly within Xcode or from the command line using xcodebuild.

asl commented 12 years ago

Have you tried to "Please file a bug at http://bugreport.apple.com with this warning message and any useful information you can provide." as you were suggested?

llvmbot commented 12 years ago

assigned to @tkremenek