[clang] [analyzer] Improve UseAfterLifetimeEnd checker's diagnostic with descriptive names and value tracking (PR #212158)

[Balázs Benics via cfe-commits]

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steakhal wrote:

This example shows why `trackExpressionValue` is not a great fir out of the box for us because it tracks the value of the pointee - and not the pointer itself.
Most (all) of the notes are not relevant for us.

https://github.com/llvm/llvm-project/pull/212158