tree 9c7e74a647db2baee5795b6ea3f25e52de88ad76
parent b2a2c16ea136faa51a5307f742dbafe8f7b3861e
author Sam McCall <sam.mccall@gmail.com> 1547631686 +0000
committer Sam McCall <sam.mccall@gmail.com> 1547631686 +0000

Reapply [Tooling] Make clang-tool find libc++ dir on mac when running on a file without compilation database.

This reverts commit r351282, and re-lands r351222 and r351229 with the
use-after-free fixed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@351316 91177308-0d34-0410-b5e6-96231b3b80d8