[all-commits] [llvm/llvm-project] 4687b4: Reland D78945 TarWriter: Only use 137 of the 155 p...

[Fangrui Song via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 4687b454339b9072e15df55e52ae8bc2a266225d
      https://github.com/llvm/llvm-project/commit/4687b454339b9072e15df55e52ae8bc2a266225d
  Author: Fangrui Song <maskray at google.com>
  Date:   2020-04-27 (Mon, 27 Apr 2020)

  Changed paths:
    M llvm/lib/Support/TarWriter.cpp
    M llvm/unittests/Support/TarWriterTest.cpp

  Log Message:
  -----------
  Reland D78945 TarWriter: Only use 137 of the 155 prefix bytes.

With a fix to unittests/Support/TarWriterTest.cpp

This makes lld's --reproduce output more compatible with tar 1.13 and
before.  This is a very old version of tar, but it's the version in
both gnuwin and unxutils, and the cost for supporting them are very
low, so we might as well just do that.

https://bugs.chromium.org/p/chromium/issues/detail?id=1073524#c21
and onward has more details.

Differential Revision: https://reviews.llvm.org/D78945