[PATCH] D58557: [NFC][Sanitizer] Hard-code fast/slow unwinder at call site

[Julian Lettner via llvm-commits]

Attempted fix:
https://github.com/llvm/llvm-project/commit/52b751088b11547e0f4ef0589ebbe5e57752c68c <https://github.com/llvm/llvm-project/commit/52b751088b11547e0f4ef0589ebbe5e57752c68c>

I think the problem is that my previous patch made UBSan runtime dependent on a symbol from sanitizer_common.
UBSan is combined with other runtimes which may or may not provide the symbol, so I defined it with weak linkage in UBSan.

Please let me know if this is an appropriate fix.

> On Feb 27, 2019, at 3:38 PM, Evgenii Stepanov via Phabricator <reviews at reviews.llvm.org> wrote:
> 
> eugenis added a comment.
> 
> This bot seems unhappy:
> http://lab.llvm.org:8011/builders/clang-cmake-aarch64-full/builds/6651
> 
> 
> Repository:
>  rCRT Compiler Runtime
> 
> CHANGES SINCE LAST ACTION
>  https://reviews.llvm.org/D58557/new/
> 
> https://reviews.llvm.org/D58557
> 
> 
> 

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