[all-commits] [llvm/llvm-project] 1ce831: [Support] Add stream tie function and use it for e...

[James Henderson via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1ce831912c797df1cb6d313d8e576a3f86175b6d
      https://github.com/llvm/llvm-project/commit/1ce831912c797df1cb6d313d8e576a3f86175b6d
  Author: James Henderson <james.henderson at sony.com>
  Date:   2020-06-09 (Tue, 09 Jun 2020)

  Changed paths:
    M llvm/include/llvm/Support/raw_ostream.h
    M llvm/lib/Support/raw_ostream.cpp
    M llvm/unittests/Support/raw_ostream_test.cpp

  Log Message:
  -----------
  [Support] Add stream tie function and use it for errs()

errs() is now tied to outs() so that if something prints to errs(),
outs() will be flushed before the printing occurs. This avoids
interleaving output between the two and is consistent with standard cout
and cerr behaviour.

Reviewed by: labath, JDevlieghere, MaskRay

Differential Revision: https://reviews.llvm.org/D81156