efriedma added a comment. The fundamental problem here is the interaction with SFINAE; if we don't diagnose this as an error, we actually miscompile some cases. Because of that, a flag wouldn't really be "turning off the warning"; it would be enabling a non-compliant language mode that has different rules for whether enum casts are legal.
If it weren't for that, I don't think anyone would be in a hurry to turn the warning into a hard error. CHANGES SINCE LAST ACTION https://reviews.llvm.org/D150226/new/ https://reviews.llvm.org/D150226 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
