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[workflows] Disable intermittently failing build/test job #1457

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@bryanpkc bryanpkc commented Oct 7, 2024

The test case mp_correct/lit/pv01.sh has been failing intermittently in the GitHub workflows (see issue #1453). It seems that it only happens when classic-flang-llvm-project is built with Clang 15. This patch disables the job temporarily, until we can determine the root cause of the problem.

The test case mp_correct/lit/pv01.sh has been failing intermittently in the
GitHub workflows. It seems that it only happens when classic-flang-llvm-project
is built with Clang 15. This patch disables the job temporarily, until we can
determine the root cause of the problem.
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bryanpkc commented Oct 7, 2024

I'm going to run the workflows on this PR multiple times, to confirm that the error no longer occurs (i.e. it only occurs when classic-flang-llvm-project is built with Clang 15).

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bryanpkc commented Oct 7, 2024

The failure has not occurred in 10 CI runs. It seems that the problem is indeed triggered by building with Clang 15.

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I'm bit confused by this versioning.

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bryanpkc commented Oct 8, 2024

I'm bit confused by this versioning.

We have always built Clang and LLVM with multiple compilers (two different versions of Clang and a recent GCC) before using that Clang to build Classic Flang. This practice was adopted before I joined the project. Apparently, building LLVM with different compilers can be useful for catching problems like this one. 😄

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