clang-static-analyzer

I’m using Xcode 3.2.4 and have setup the Clang Static Analyser feature to use a newer build of the binary, as detailed here: http://clang-analyzer.llvm.org/xcode.html (Basically using the set-xcode-analyzer command line utility to change which copy of the Static Analyser that Xcode uses for Build and Analyze .) What I can’t figure is how to set that binary to use additional checks, such as -analyzer-check-objc-missing-dealloc when using the binary via Xcode, as detailed here: http://loufranco.com/blog/files/scan-build-better-than-build-analyze.html and in scan-build --help. AVAILABLE ANALYSES

I'm running Clang 3.4 on Ubuntu 12.10 (from http://llvm.org/apt/ ). I ran the analyzer (clang --analyze) over some code, and it found a couple of issues: Blah.C:429:9: warning: Declared variable-length array (VLA) has zero size unsigned char separatedData[groupDataLength]; ^~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~ But the specific issue isn't important. I want to know the steps of how it came to that conclusion (the code is complex enough for me not to see it within 15 mins). I see a screenshot from the Clang site that shows steps of working viewed in a web browser: That's probably obtained

I keep getting Clang errors on the following type of code and I can't figure out why they're erroneous or how to resolve them to Clang's satisfaction: + (NSString *)checkForLength: (NSString *)theString error: (NSError **)error { BOOL hasLength = ([theString length] > 0); if (hasLength) return theString; else { *error = [NSError errorWithDomain:@"ErrorDomain" code:hasLength userInfo:nil]; return nil; } } Leaving aside the utterly-contrived nature of the example (which Clang did object to so it's illustrative enough), Clang balks at the error assignment line with the following objection:

I recently started experimenting with the clang-tidy tool of llvm. Now I am trying to suppress false warnings from third party library code. For this I want to use the command line options -header-filter=<string> or -line-filter=<string> but so far without success. So for people with limited time I will put the question here at the beginning and explain later what I already tried. Question What option do I need to give to the clang-tidy tool to suppress a warning from a certain line and file? if this is not possible What option works to suppress warnings from external header files? What I did

I've got a project built with SCons and I'm trying to use the Clang Static Analyzer to analyze the code. However, when running scan-build scons SCons seems to ignore the settings introduced by scan-build . How can I make this work? The way scan-build works is it sets up various environment variables that are usually used by build systems (such as make ) to control how the build happens. Some of these are: CC - name of program to use as C compiler CXX - name of program to use as C++ compiler CCC_* - various environment variables that control the behaviour of Clang's static analyzer SCons