Works with gcc-5.3. I suggest requiring a known good version of gcc in the qtwebengine ebuild. Reproducible: Always Steps to Reproduce: 1. emerge gcc-5.1 2. gcc-config version 5.1 3. emerge qtwebengine-5.5.0 or 5.6.0 Actual Results: ninja: build stopped: subcommand failed. Expected Results: >>> Verifying ebuild manifests >>> Emerging (1 of 1) dev-qt/qtwebengine-5.6.0::qt >>> Installing (1 of 1) dev-qt/qtwebengine-5.6.0::qt >>> Recording dev-qt/qtwebengine:5 in "world" favorites file... >>> Jobs: 1 of 1 complete Load avg: 6.3, 9.7, 10.2 >>> Auto-cleaning packages... >>> No outdated packages were found on your system. * GNU info directory index is up-to-date.
Why does it work with 5.3.0? is it a gcc bug? The upstream bug report doesn't mention a compiler bug.
gcc-5.1.0 will be masked forever, I don't think we need to do anything here.