* Jakub Jelinek: > On Tue, Sep 26, 2023 at 10:28:34AM +0200, Florian Weimer via Gcc wrote: >> My understanding of the consensus goes as follows: >> >> * We want to make some changes in this area for GCC 14. >> * We should do the same thing that Clang does: default to the relevant >> -Werror= options. > > I think it doesn't have to be necessarily using defaulting to -Werror=, > -Werror= involves diagnostic_classify_diagnostic etc. > It could very well be also just testing if the corresponding warning > option isn't explicitly (OPTION_SET_P) disabled and isn't explicitly > -Wno-error=OPTION and c99 or later and conditionally based on that > use error (which would print the [-W...] part though) or warning. > The former would be in system headers too, the latter wouldn't. > We need to decide what exact options we want to turn those errors (and/or > warnings) off or on, -Wno-implicit-int, -w, -Wno-error, > -Wno-error=implicit-int, ...
I didn't mean to be prescriptive about implementation details, sorry. With Clang, -w and -Wno-error have no effect on those error-by-default warnings, too. And I don't think Clang supports suppressing warnings from system headers. Thanks, Florian
