tree ec521e665d26fb8d628bfd585fc3f45fda41418e
parent 051773f0c2cebd04805e33f965d48c1e883c9620
author Jan Vesely <jan.vesely@rutgers.edu> 1552460331 +0000
committer Copybara-Service <copybara-worker@google.com> 1598829300 -0700

travis: Use gcc-6 for llvm-7 build

llvm does not expose -std=c++11 in cxx flags.
gcc-6 switched default from c++98 to c++14

Reviewers: Aaron Watry, Tom Stellard
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 356009
GitOrigin-RevId: edcf4d28b3b281622c62d138d22c8fd3a0e50b4d