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build: use Clang 12 for test-asan workflow #40238

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build: use Clang 12 for test-asan workflow #40238

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6 changes: 3 additions & 3 deletions .github/workflows/test-asan.yml
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Expand Up @@ -38,9 +38,9 @@ jobs:
if: github.event.pull_request.draft == false
runs-on: ubuntu-latest
env:
CC: clang
CXX: clang++
LINK: clang++
CC: clang-12
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Also latest clang is 13. Not sure github action bundled it yet.

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GitHub runners only have clang 10,11 and 12: https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu2004-README.md#language-and-runtime

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@gengjiawen gengjiawen Sep 29, 2021 •
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Tried clang-13 locally, same result.

CXX: clang++-12
LINK: clang++-12
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@gengjiawen gengjiawen Sep 29, 2021 •
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Is LINK here neccessary ?

Context: https://www.gnu.org/software/make/manual/html_node/Implicit-Variables.html

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Yeah, it doesn't seem useful. /cc @mmarchini

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I don't remember why LINK was necessary (to force clang linker instead of ld when linking? idk that's the only thing I can think of). We can always remove and see what happens

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I do think it was more of a GitHub Actions thing and less of a gnu thing

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Ok I remember now. ld would consume too much memory for ASAN to be possible on Actions, given the size of the instances available (see #32776). I'm almost sure LINK is not standard but is used by gyp. What I'm not entirely sure is if CXX being set to clang++-12 is enough. Again, someone would need to experiment (specifically looking at peak memory usage when LINK is set or not).

CONFIG_FLAGS: --enable-asan
steps:
- uses: actions/checkout@v3
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