[cfe-dev] Automatic scan-build on the LLVM toolchain

[David Blaikie]

On Jul 6, 2013 7:34 AM, "Sylvestre Ledru" <sylvestre at debian.org> wrote:
>
> Hello,
>
> After setting an automatic code coverage tool [1], I just plugged an
> automatic scan-build on the LLVM toolchain:
>
> http://buildd-clang.debian.net/scan-build/
>
> Note that:
> * polly is currently not analyzed. I had to disable the build until the
> new version of cloog is available.
> * compiler-rt is not analyzed because it does not respect the CC/CXX
> argument to use the clang built locally [3]. Should I report a bug here?

I'm not sure what bug to report here, if any, compiler-rt deliberately uses
the just-built clang because it has to be in lock-step with it.

This would be one of those times a compilation database, emitted by clang
itself or the build system, would be a better solution than the scan-build
style interception.

>
> This work is done through the Debian/LLVM jenkins instance [2].
> The report is updated twice a day.
> The scan-build/clang used to produce the report is the one published on
> http://llvm.org/apt/. That means that a new feature/fix done on
> scan-build will appear only about a day after on report. As a side
> effect, it tests automatically the packages distributed on llvm.org/apt/.

Any reason this can't be a two stage and use the previous build to analyze
the next?

>
> Sylvestre
>
> [1] http://buildd-clang.debian.net/coverage/
>
> [2] Example:
>
/tmp/buildd/llvm-toolchain-snapshot-3.4~svn185728/build-llvm/Release/bin/clang
> -fno-exceptions -fPIC -funwind-tables
>
-I/tmp/buildd/llvm-toolchain-snapshot-3.4~svn185728/projects/compiler-rt/lib
>
-I/tmp/buildd/llvm-toolchain-snapshot-3.4~svn185728/projects/compiler-rt/include
> -Wall -Werror -O3 -fomit-frame-pointer -m64 -fPIE -fno-builtin
> -gline-tables-only -fno-rtti -DASAN_FLEXIBLE_MAPPING_AND_OFFSET=1 -c -o
>
/tmp/buildd/llvm-toolchain-snapshot-3.4~svn185728/build-llvm/tools/clang/runtime/compiler-rt/clang_linux/asan-x86_64/x86_64/SubDir.lib__sanitizer_common/sanitizer_symbolizer_itanium.o
>
/tmp/buildd/llvm-toolchain-snapshot-3.4~svn185728/projects/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_itanium.cc
>
> [3] http://llvm-jenkins.debian.net/
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