What version of gRPC and what language are you using?

C++, latest version

What operating system (Linux, Windows,...) and version?

Linux

What runtime / compiler are you using (e.g. python version or version of gcc)

gcc4.8

What did you do?

Looked at our portability suite runs on master and saw the gcc4.8 tests failing on master because of the service_config_test

Local repro: sudo tools/run_tests/run_tests.py -c dbg --compiler gcc4.8 --regex service_config_test -l c++ --use_docker -j 8

What did you expect to see?

The test should pass

What did you see instead?

The test fails.

The issue is that std::regex doesn't functionally work in gcc4.8, although it compiles.

I'm making a workaround that skips the test for gcc4.8. However, I recommend either:

1. yashkt@ confirming that the test behavior should be identical across compilers and closing this bug or
2. Reworking the test to use something besides std::regex when running under gcc4.8