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Author SHA1 Message Date
Serge Guelton 4a27478a5b Python compat - print statement 
Make sure all print statements are compatible with Python 2 and Python3 using
the `from __future__ import print_function` statement.

Differential Revision: https://reviews.llvm.org/D56249

llvm-svn: 350307
 2019-01-03 14:11:33 +00:00
Ben Dunbobbin 7b76de2dcb [lit] support unsetting env variables (again!) 
This is an updated version of https://reviews.llvm.org/D22144 by @jlpeyton.

The patch was accepted but not landed.

This is useful functionality and I would like to use this to enable lit tests for environment variable behaviour.

Differential Revision: https://reviews.llvm.org/D36403

llvm-svn: 311180
 2017-08-18 17:32:57 +00:00