[PATCH] D29362: Return Error instead of bool from mergeTypeStreams().

[Rui Ueyama via Phabricator via llvm-commits]

ruiu created this revision.

Previously, mergeTypeStreams returns only true or false, so it was
impossible to know the reason if it failed. This patch changes the
function signature so that it returns an Error object.


https://reviews.llvm.org/D29362

Files:
  lld/COFF/PDB.cpp
  llvm/include/llvm/DebugInfo/CodeView/TypeStreamMerger.h
  llvm/lib/DebugInfo/CodeView/TypeStreamMerger.cpp

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