[LLVMdev] Need help reading the LLVM Buildbot results

Patrik Hägglund H patrik.h.hagglund at ericsson.com
Sat Nov 10 03:21:14 PST 2012

>From r167602 and onwards I get a fail in 'make check-all' for llvm+clang, built with gcc-4.7.1 (but not with clang-3.1) on Linux x86_64:

Failing Tests (1):
    Clang :: CodeGenCXX/mangle-ms-templates.cpp

clang: /dev/shm/uabpath/master/include/llvm/Support/Casting.h:208: typename llvm::cast_retty<To, From>::ret_type llvm::cast(const Y&) [with X = clang::TemplateSpecializationType; Y = const clang::Type*; typename llvm::cast_retty<To, From>::ret_type = const clang::TemplateSpecializationType*]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.

This made me take a look at the LLVM Buildbot pages at http://lab.llvm.org:8011/. However, I find it difficult to find useful information matching this problem.

* Can I look up results for r167602 (or closely afterwards)? (Can I compare it with r167601 or less?)
* How can I see if some buildbot is using gcc-4.7.1 (or later)?
* There seems to be quite a few failed builds in the buildbots. Which buildbot configurations should I expect to be maintained to produce mostly non-failed builds?
* Is there some general introduction document for reading the LLVM Buildbot results?

Patrik Hägglund

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