benhamilton added a comment. @stephanemoore: It appears all warnings are enabled by default unless they are in class `DefaultIgnore`:
https://github.com/llvm-mirror/clang/blob/6de2efd1953adaa9a190b2cdfbe7b5c15f6d6efe/include/clang/Basic/Diagnostic.td#L105 This diagnostic is not in `DefaultIgnore`: https://github.com/llvm-mirror/clang/blob/a58d0437d1e17d53d7bffea598d77789dd6d28b6/include/clang/Basic/DiagnosticGroups.td#L933 In fact, the `All` class is specifically for warnings which *are* in `DefaultIgnore` but which should be emitted with `-Wall`: https://github.com/llvm-mirror/clang/blob/a58d0437d1e17d53d7bffea598d77789dd6d28b6/include/clang/Basic/DiagnosticGroups.td#L782 // Note that putting warnings in -Wall will not disable them by default. If a // warning should be active _only_ when -Wall is passed in, mark it as // DefaultIgnore in addition to putting it here. Repository: rC Clang https://reviews.llvm.org/D42704 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
