rsmith added inline comments.
================ Comment at: include/clang/Basic/DiagnosticSemaKinds.td:3147-3149 +def warn_impcast_literal_to_bool : Warning< + "implicit conversion from %0 to %1; will always evaluate to " + "'%select{false|true}2'">, InGroup<LiteralConversion>; ---------------- Warning groups are cheap, and fine-grained groups give users a way to incrementally roll out our new improved warnings. Can we retain the string-conversion group and add a new warning flag for the new cases (both as subgroups of literal-conversion), rather than rolling them into a single group? I think this diagnostic text is worse for the string literal case than the old text: the type of the string literal is not relevant to the warning, and displaying it seems confusing. For consistency, something like "implicit conversion from string literal to 'bool'; will always evaluate to 'true'" would work. Also, please include the word "literal" in the version of this warning for floating-point and character literals. (And actually, maybe using the "implicit conversion from floating-point literal to 'bool' [...]" formulation would be clearer there too, rather than listing a largely-irrelevant type.) https://reviews.llvm.org/D15935 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits