[cfe-users] UBSAN_MODE_UNKNOWN

[Ben Pope]

On Tuesday, May 05, 2015 12:08 AM, Alexey Samsonov wrote:
> Hi Ben,
>
> On Sun, May 3, 2015 at 9:52 PM, Ben Pope
> <benpope81 at gmail.com
> <mailto:benpope81 at gmail.com>> wrote:
>
>     When I run with UBSAN over the Boost libraries, I get a lot of
>     output of the form:
>     ==20717==Sanitizer CHECK failed:
>     /home/ben/development/llvm/trunk/llvm/projects/compiler-rt/lib/ubsan/ubsan_init.cc:60
>     ((UBSAN_MODE_UNKNOWN)) != ((ubsan_mode)) (0, 0)
>
>     I'm not sure what's going wrong, I was expecting something more
>     descriptive!
>
>
> Right, I should probably add more descriptive error message...
>
> Can you provide the details of how you compile
> your source files and link them into libraries and executable? It looks
> like your executable is linked with both UBSan
> runtime and ASan runtime. It can happen if the link flags used were
> inconsistent, or you mix libraries/executables
> built with different versions of Clang.

It's not impossible, but I don't think I'm linking both runtimes.

Here's an example:
http://www.boost.org/development/tests/develop/developer/output/BenPope%20x86_64%20Ubuntu-boost-bin-v2-libs-algorithm-test-all_of_test-test-clang-linux-3-7~ubsan~c14_libc++-debug.html

Ben