[LLVMbugs] [Bug 2699] New: LLVM/Clang Static Analyzer 0.79 doesn' t recognise -Wstrict-overflow, -fstrict-overflow

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2699

           Summary: LLVM/Clang Static Analyzer 0.79 doesn't recognise -
                    Wstrict-overflow, -fstrict-overflow
           Product: new-bugs
           Version: unspecified
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sean at rogue-research.com
                CC: llvmbugs at cs.uiuc.edu


I've recently tried the LLVM/Clang Static Analyzer and it reports the following
trying to analyse my project:

cc1objplus: error: unrecognized command line option "-Wstrict-overflow=5"
cc1objplus: error: unrecognized command line option "-fstrict-overflow"

These two options are new in gcc 4.2 (Xcode 3.1).  If I remove them the static
analyser succeeds.

I'm under the impression that llvm-gcc is command-line compatible with gcc, but
I guess it's not fully up to date with gcc's many options.  I'd like to see
these two supported, or at least ignored, so I don't have to keep turning them
on/off.

Attached is an xcode project to repro the problem:

scan-build -k -v xcodebuild -configuration Debug


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