[all-commits] [llvm/llvm-project] fd14a1: [clang][Frontend] Add missing error handling

[LemonBoy via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: fd14a1f6fff37ef62a35ca0f8bc630ac8b23516d
      https://github.com/llvm/llvm-project/commit/fd14a1f6fff37ef62a35ca0f8bc630ac8b23516d
  Author: LemonBoy <thatlemon at gmail.com>
  Date:   2020-10-22 (Thu, 22 Oct 2020)

  Changed paths:
    M clang/lib/Frontend/ASTUnit.cpp
    M clang/unittests/Frontend/ASTUnitTest.cpp

  Log Message:
  -----------
  [clang][Frontend] Add missing error handling

Some early errors during the ASTUnit creation were not transferred to the `FailedParseDiagnostic` so when the code in `LoadFromCommandLine` swaps its content with the content of `StoredDiagnostics` they cannot be retrieved by the user in any way.

Reviewed By: andrewrk, dblaikie

Differential Revision: https://reviews.llvm.org/D78658