Xing Xue 2dee094a08 Fixes for builds that require strict X/Open and POSIX compatiblity ...

Summary:
- Use alternative to MAP_ANONYMOUS for allocating mapped memory if it isn't available
- Use strtok_r instead of strsep as part of getting program path
- Don't try to find the width of a terminal using "struct winsize" and TIOCGWINSZ on POSIX builds. These aren't defined under POSIX (even though some platforms make them available when they shouldn't), so just check if we are doing a X/Open or POSIX compliant build first.

Author: daltenty

Reviewers: hubert.reinterpretcast, xingxue, andusy

Reviewed By: hubert.reinterpretcast

Subscribers: MaskRay, jsji, hiraditya, kristina, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61326

llvm-svn: 360898

2019-05-16 14:02:13 +00:00

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