[PATCH] D141384: [clang][dataflow] Fix 2 bugs in `MemberExpr` interpretation.

[Yitzhak Mandelbaum via Phabricator via cfe-commits]

ymandel created this revision.
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There were two (small) bugs causing crashes in the analysis.  This patch fixes both of them.

1. An enum value was accessed as a class member. Now, the engine gracefully

ignores such member expressions.

2. Field access in `MemberExpr` of struct/class-typed global variables. Analysis

didn't interpret fields of global vars, because the vars were initialized before
the fields were added to the "allowlist". Now, the allowlist is set _before_
init of globals.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141384

Files:
  clang/lib/Analysis/FlowSensitive/DataflowEnvironment.cpp
  clang/lib/Analysis/FlowSensitive/Transfer.cpp
  clang/unittests/Analysis/FlowSensitive/DataflowEnvironmentTest.cpp
  clang/unittests/Analysis/FlowSensitive/TransferTest.cpp

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