[PATCH] D158858: [analyzer] MPIChecker: add defensive checking (check against nullptr)

[Ding Fei via Phabricator via cfe-commits]

danix800 added a comment.

In D158858#4617510 <https://reviews.llvm.org/D158858#4617510>, @steakhal wrote:

> Makes sense.
> Would thus test crash without the early returns? And now they wouldn't?

Yes, the original crash shown in https://godbolt.org/z/39P7W6KPa


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