[all-commits] [llvm/llvm-project] 3bb24b: Fix tests on Windows after D49466

[Fangrui Song via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3bb24bf25767ef5bbcef958b484e7a06d8689204
      https://github.com/llvm/llvm-project/commit/3bb24bf25767ef5bbcef958b484e7a06d8689204
  Author: Fangrui Song <maskray at google.com>
  Date:   2019-11-26 (Tue, 26 Nov 2019)

  Changed paths:
    M clang/lib/CodeGen/CGDebugInfo.cpp
    M clang/lib/Lex/PPMacroExpansion.cpp
    M clang/test/CodeGen/debug-prefix-map.c

  Log Message:
  -----------
  Fix tests on Windows after D49466

It is tricky to use replace_path_prefix correctly on Windows which uses
backslashes as native path separators. Switch back to the old approach
(startswith is not ideal) to appease build bots for now.