Merge pull request #1277 from kzc/fix-string-plus-opt
authorMihai Bazon <mihai.bazon@gmail.com>
Thu, 1 Sep 2016 13:32:22 +0000 (16:32 +0300)
committerGitHub <noreply@github.com>
Thu, 1 Sep 2016 13:32:22 +0000 (16:32 +0300)
Account for side effects in `string + expr` optimization


Trivial merge