GCC 7 contains several fixes to the gcov pass, so we should consider switching to it.
What is the status of CI builds using GCC 7?
There is a gcc 7 toolchain as of bug 1445536, but several things fail when using it for the build.
Err, and I now realize I hadn't landed it.
I've tested a build with GCC 7 and -static-libgcc -static-libstdc++. It seems the build got quite slower, causing a lot of tests (or test suites) to timeout.
Created attachment 8997538 [details] [diff] [review] Patch For reference, this is the patch. And here's the try run: https://treeherder.mozilla.org/#/jobs?repo=try&revision=4254ad7e94c1f16fb740ef7f0c29e1049e2925f1. It looks like the runtime almost doubled for many test suites.
We'll likely switch to Clang for building the ccov build in bug 1499663. We can reopen if it doesn't happen.
Status: NEW → RESOLVED
Last Resolved: 3 months ago
Resolution: --- → WONTFIX
You need to log in before you can comment on or make changes to this bug.