[all-commits] [llvm/llvm-project] 8f9ca5: [ObjectYAML][DWARF] Collect diagnostic message whe...

[Xing GUO via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 8f9ca561a2bd9d373d4a4ad0cd79a118c5abe4fb
      https://github.com/llvm/llvm-project/commit/8f9ca561a2bd9d373d4a4ad0cd79a118c5abe4fb
  Author: Xing GUO <higuoxing at gmail.com>
  Date:   2020-06-29 (Mon, 29 Jun 2020)

  Changed paths:
    M llvm/lib/ObjectYAML/DWARFEmitter.cpp
    M llvm/unittests/ObjectYAML/CMakeLists.txt
    A llvm/unittests/ObjectYAML/DWARFYAMLTest.cpp

  Log Message:
  -----------
  [ObjectYAML][DWARF] Collect diagnostic message when YAMLParser fails.

Before this patch, the diagnostic message is printed to `errs()` directly, which makes it difficult to use `FailedWithMessage()` in unit testing.
In this patch, we add a custom error handler for YAMLParser, which helps collect diagnostic messages and make it easy to use `FailedWithMessage()` to check error messages.

Reviewed By: jhenderson, MaskRay

Differential Revision: https://reviews.llvm.org/D82630