Fix compilation and runtime issues on windows #130
Merged
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This PR is based on #129, so that one must be merged first.
Some code changes in past PRs have introduced code that no longer compiles on windows, this PR remedies that by adding missing headers and some minor code tweaks.
Additionally, PR #106 refactored the unit tests, specifically changing when
MPI_Init
is called relative to when Catch2 is initialized. This surfaced an issue where MSMPI changes the top-level exception filter, after Catch2 has already changed it, resulting in a sanity check inside Catch2 failing, where it checks that the previous filter was restored correctly. This PR disables windows SEH for Catch2, mitigating the issue.